PART I. FINANCIAL INFORMATION

Item 1.  Financial Statements

DONALDSON COMPANY, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS

(Thousands of dollars, except share and per share amounts)
(Unaudited)

See Notes to Condensed Consolidated Financial Statements.

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DONALDSON COMPANY, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Thousands of dollars, except share amounts)
(Unaudited)

See Notes to Condensed Consolidated Financial Statements.

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DONALDSON COMPANY, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Thousands of dollars)
(Unaudited)

See Notes to Condensed Consolidated Financial Statements.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note A – Basis of Presentation

The accompanying unaudited condensed consolidated financial statements of Donaldson Company, Inc. and subsidiaries (the Company) have been prepared in accordance with accounting principles generally accepted in the United States of America and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and notes required for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included and are of a normal recurring nature. Certain amounts in the prior periodsperiod have been reclassified to conform to the current presentation. The reclassifications had no impact on the Company’s net earnings or shareholders’ equity as previously reported. Operating results for the three monthsand six month periods ended OctoberJanuary 31, 20082009 are not necessarily indicative of the results that may be expected for future periods. The year-end condensed balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. For further information, refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended July 31, 2008.

Note B – Inventories

The components of inventory as of OctoberJanuary 31, 20082009 and July 31, 2008 are as follows (thousands of dollars):

Note C – Accounting for Stock-Based Compensation

Stock-based employee compensation cost is recognized using the fair-value based method for all awards. The Company determined the fair value of its option awards using the Black-Scholes option pricing model. The following assumptions were used to value the options granted during the threesix months ended OctoberJanuary 31, 2008: 72009: range of 4 to 8 year expected life; expected volatility range of 23.021.6 percent to 23.123.5 percent; risk-free interest rate range of 3.61.4 percent to 3.74.0 percent and annual dividend yield of 1.0 percent. The expected life selected for options granted during the period represents the period of time that the options are expected to be outstanding based on the contractual life and historical data of option holder exercise and termination behavior. Expected volatilities are based upon historical volatility of the Company’s stock over a period at least equal to the expected life of each option grant. Option grants are priced at the fair market value of the Company’s stock on the date of grant. The weighted average fair value for options granted during the threesix months ended OctoberJanuary 31, 2009 and 2008 and 2007 was $12.57$8.54 per share and $1.70$10.75 per share, respectively. The fair value of options granted was lower during the three months ended October 31, 2007 due to the fact that the only options granted during that quarter were a result of exercising reloadable grants with a short remaining maturity. For the three months and six months ended OctoberJanuary 31, 2009, the Company recorded pretax compensation expense associated with stock options of $2.8 million and $3.2 million, respectively, and recorded $1.0 million and $1.2 million of related tax benefit, respectively. For the three months and six months ended January 31, 2008, the Company recorded pretax compensation expense associated with stock options of $0.4$3.0 million and $3.3 million, respectively, and recorded $0.2$1.1 million and $1.2 million of related tax benefit. For the three months ended October 31, 2007, the Company recorded pretax compensation expense associated with stock options of $0.3 million and recorded $0.1 million of related tax benefit.benefit, respectively.

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The following table summarizes stock option activity during the threesix months ended OctoberJanuary 31, 2008:2009:

The total intrinsic value of options exercised during the threesix months ended OctoberJanuary 31, 2009 and 2008 and 2007 was $5.0$6.5 million and $6.8$14.1 million, respectively.

The following table summarizes information concerning outstanding and exercisable options as of OctoberJanuary 31, 2008:2009:

At OctoberJanuary 31, 2008,2009, the aggregate intrinsic value of options outstanding and exercisable was $48.9 million and $48.7 million, respectively.

The Company recorded $0.5 million and $1.0 million of compensation expense during the three months ended October 31, 2008 and 2007, respectively, related to other share based awards.$31.9 million.

As of OctoberJanuary 31, 2008,2009, there was $2.4$2.5 million of total unrecognized compensation cost related to non-vested stock options granted under the 2001 Master Stock Incentive Plan. This unvested cost is expected to be recognized during the remainder of Fiscal 2009, Fiscal 2010, Fiscal 2011 and Fiscal 2012.

Note D – Net Earnings Per Share

The Company’s basic net earnings per share is computed by dividing net earnings by the weighted average number of outstanding common shares. The Company’s diluted net earnings per share is computed by dividing net earnings by the weighted average number of outstanding common shares and dilutive shares relating to stock options, restricted stock and stock incentive plans. Certain outstanding options were excluded from the diluted net earnings per share calculations because their exercise prices were greater than the average market price of the Company’s common stock during those periods. For the three and six months ended OctoberJanuary 31, 2008 and 20072009 there were 250,6181,725,001 and 16,655440,020 options excluded from the diluted net earnings per share calculation, respectively. For both the three months and six months ended January 31, 2008 there were 228,548 options excluded from the diluted net earnings per share calculation.

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The following table presents information necessary to calculate basic and diluted net earnings per common share (thousands, except per share amounts):

Note E – Shareholders’ Equity

The Company reports accumulated other comprehensive income as a separate item in the shareholders’ equity section of the balance sheet.

Total comprehensive income and its components are as follows (thousands of dollars):

Total accumulated other comprehensive income and its components at OctoberJanuary 31, 20082009 and July 31, 20072008 are as follows (thousands of dollars):

During the first quarter of Fiscal 2009, theThe Company repurchased 0.8 millionno shares during the three months ended January 31, 2009. The Company repurchased 802,000 shares for $32.8 million at an average price of $40.86 per share.share during the six months ended January 31, 2009. As of OctoberJanuary 31, 20082009 the Company had remaining authorization to repurchase up to 0.9 million shares pursuant to the current authorization.

At OctoberJanuary 31, 2008,2009, the fair market value of forward contract assets and liabilities was $5.4$3.5 million and $3.7$3.0 million, respectively.

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Note F – Segment Reporting

The Company has two reportable segments, Engine Products and Industrial Products, that have been identified based on the internal organization structure, management of operations and performance evaluation. Corporate and Unallocated includes corporate expenses determined to be non-allocable to the segments and interest income and expense. Segment detail is summarized as follows (thousands of dollars):

Sales to one Customer accounted forThere were no Customers over 10 percent of net sales for the three and six months ended OctoberJanuary 31, 20082009 and 2007,2008, respectively. There were no Customers over 10 percent of gross accounts receivable as of OctoberJanuary 31, 20082009 and 2007.2008.

Note G – Goodwill and Other Intangible Assets

The Company’s most recent annual impairment assessment for goodwill was completed during the third quarter of Fiscal 2008. The results of this assessment showed that the fair values of the reporting units to which goodwill is assigned continue to be higher than the book values of the respective reporting units, resulting in no goodwill impairment. Goodwill is assessed for impairment between annual assessments whenever events or circumstances make it more likely than not that an impairment may have occurred. No goodwill was impaired during the six months ended January 31, 2009 or 2008. The Company did not consider there to be any triggering events that would require an interim impairment assessment. The Company has allocated goodwill to its Industrial Products and Engine Products segments. The current year addition to the Engine Products segment is a result of the preliminary purchase price allocation for the acquisition of 100 percent of the stock of Western Filter Corporation on October 15, 2008. The allocation is preliminary until the working capital adjustment is finalized. Goodwill associated with this acquisition is tax deductible. Pro forma financial results are not presented as the results of the acquisition are not material to the Company’s financial results. The current year disposition in the Industrial Products segment is a result of the sale of the air dryer business in Maryville, Tennessee on October 31, 2008. Following is a reconciliation of goodwill for the threesix months ending OctoberJanuary 31, 20082009 (thousands of dollars):

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As of OctoberJanuary 31, 2008,2009, other intangible assets were $68.4$66.9 million, a $22.1$20.6 million increase from the balance of $46.3 million at July 31, 2008. The increase in other intangible assets is due to the acquisition of Western Filter Corporation partially offset by amortization, foreign exchange and disposition activity.

Note H – Guarantees

The Company and its partner, Caterpillar, Inc., in an unconsolidated joint venture, Advanced Filtration Systems Inc., guarantees certain debt of the joint venture. As of OctoberJanuary 31, 2008,2009, the joint venture had $21.7$20.0 million of outstanding debt of which the Company guarantees half.

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The Company estimates warranty costs using standard quantitative measures based on historical warranty claim experience and evaluation of specific Customer warranty issues. Following is a reconciliation of warranty reserves for the threesix months ended OctoberJanuary 31, 20082009 and 20072008 (thousands of dollars):

At OctoberJanuary 31, 2008,2009, the Company had a contingent liability for standby letters of credit totaling $18.5 million that have been issued and are outstanding. The letters of credit guarantee payment to third parties in the event the Company is in breach of specified bond financing agreement and insurance contract terms as detailed in each letter of credit. At OctoberJanuary 31, 2008,2009, there were no amounts drawn upon these letters of credit.

Note I – Employee Benefit Plans

The Company and certain of its subsidiaries have defined benefit pension plans for many of their hourly and salaried employees. The domestic plans include plans that provide defined benefits as well as a plan for salaried workers that provides defined benefits pursuant to a cash balance feature whereby a participant accumulates a benefit comprised of a percentage of current salary that varies with years of service, interest credits and transition credits. The international plans generally provide pension benefits based on years of service and compensation level.

Net periodic pension costs for the Company’s pension plans include the following components (thousands of dollars):

The Company’s general funding policy for its pension plans is to make at least the minimum contributions as required by applicable regulations. Additionally, the Company may elect to make additional contributions up to the maximum tax deductible contribution. For the threesix months ended OctoberJanuary 31, 2008,2009, the Company made $1.0$2.1 million in contributions to its non-U.S. pension plans. The Company has not made and does not anticipate making any contributions to its U.S. pension plans in the current year and estimates that it will contribute up to an additional $4.0$2.9 million to its non-U.S. pension plans during the remainder of Fiscal 2009.

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The recent drops in the fair value of our plan assets may result in significant charges to other comprehensive income and a potential increase in Fiscal 2010 pension expense to the extent the effects are not offset by a change in discount rate at the time of our annual pension measurement on July 31, 2009.

During the three months ended January 31, 2009, the Company recorded $4.3 million in restructuring costs as a result of global workforce reductions that were communicated during the quarter.

Note J – Commitments and Contingencies

In accordance with SFAS No. 5, “Accounting for Contingencies,” (SFAS No. 5), the Company records provisions with respect to identified claims or lawsuits when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Claims and lawsuits are reviewed quarterly and provisions are taken or adjusted to reflect the status of a particular matter. The Company believes the recorded reserves in its consolidated financial statements are adequate in light of the

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probable and estimable outcomes. Any recorded liabilities were not material to the Company’s financial position, results of operation and liquidity and the Company does not believe that any of the currently identified claims or litigation will materially affect its financial position, results of operation and liquidity.

Note K – Income Taxes

The effective tax rate for the quarterthree months ended January 31, 2009 was 30.0a benefit of (31.5) percent, compared to 27.1 percenta prior year rate of 30.0 percent. The effective tax rate for the prior year first quarter.six months ended January 31, 2009 and 2008 was 13.2 percent and 28.4 percent, respectively. The higher rate this quarter was primarily due to a $2.1six months ended January 31, 2009 contains $16.7 million decrease inof discrete tax benefits, recognized this$15.0 million of which occurred in the second quarter. Second quarter comparedbenefits from the effective settlements of long-standing court cases and examinations in various jurisdictions for tax years 2003 to $3.92006 totaled $6.2 million. The remaining $8.8 million inof benefits were primarily the result of the reassessment of the corresponding unrecognized tax benefits occurringfor the subsequent open years. The prior year six month period contained $4.0 million of discrete tax reductions, primarily related to the expiration of statutes on unrecognized tax benefits and the reduction in beginning of the prior year deferred tax liabilities related to enacted foreign tax rate changes, andnearly all of which occurred in the expiration of statutes on unrecognized tax benefits. The current yearfirst quarter. Absent these items, the average underlying tax rate benefitedfor the year-to-date period has decreased from $1.8 million relatedthe prior year by 1.2 points to theapproximately 31 percent. The reinstatement of the Research and Experimentation Credit for Fiscal 2008credit, the mix of earnings between entities, and an adjustmentincreased domestic manufacturing deduction all contributed to an income tax reserve related to foreign tax audit exposure.the reduction.

The Company’s uncertain tax positions are affected by the tax years that are under audit or remain subject to examination by the relevant taxing authorities. The following tax years, in addition to the current year, remain subject to examination, at least for certain issues, by the major tax jurisdictions indicated:

At OctoberJanuary 31, 20082009 the total unrecognized tax benefits were $32.4$18.6 million, and accrued interest and penalties on these unrecognized tax benefits were $5.5$2.1 million. The Company recognizes interest accrued related to unrecognized tax benefits in income tax expense. If the Company were to prevail on all unrecognized tax benefits recorded, substantially all of the unrecognized tax benefits would benefit the effective tax rate. With an average statuteAfter the large amount of limitations of about 5 years, up to $4.4effectively settled issues in the second quarter, only

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$1.1 million of the unrecognized tax benefits could potentially expire through statute of limitations in the next 12 month period, unless extended by audit. It is reasonably possible that an additional reductionreductions in unrecognized tax benefits may occur within the fiscal year due to settlement of several worldwide tax disputes; however, quantification of an estimated range and timing cannot be made at this time.

Note L – New Accounting Standards

In September 2006, the Financial Accounting Standards Board (FASB) issued SFAS No. 158,Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans, an amendment of FASB Statements No. 87, 88, 106, and 132(R) (SFAS 158). The portion of the statement that requires recognition of the overfunded or underfunded status of defined benefit postretirement plans as an asset or liability in the statement of financial position was adopted in Fiscal 2007 with minimal impact. SFAS 158 also requires measurement of the funded status of a plan as of the date of the statement of financial position. That provision will require the Company to change its measurement date from April 30 to July 31 beginning with Fiscal 2009.

In September 2006, the FASB issued SFAS No. 157,Fair Value Measurements (SFAS 157). This statement defines fair value, establishes a framework for measuring fair value in U.S. generally accepted accounting principles and expands disclosures about fair value measurements. SFAS 157 applies whenever another standard requires (or permits) assets or liabilities to be measured at fair value, except for the measurement of share-based payments. SFAS 157 does not expand the use of fair value to any new circumstances, and was effective for the Companymajority of the Company’s assets and liabilities for its Fiscal 2009 year beginning August 1, 2008. The

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adoption of this portion of SFAS 157 in Fiscal 2009 did not have a material impact on the Company’s financial statements. On February 12, 2008, the FASB issued FASB Staff Position (FSP) FAS 157-2,Effective Date of FASB Statement No. 157 (FSP FAS 157-2). FSP FAS 157-2 delays by one year the effective date of SFAS 157 for certain non-financial assets and non-financial liabilities. The Company is currently evaluating the impact the standardFSP FAS 157-2 will have on the determination of fair value related to non-financial assets and non-financial liabilities in Fiscal 2010.

In February 2007, the FASB issued SFAS No. 159,The Fair Value Option for Financial Assets and Financial Liabilities (SFAS 159). SFAS 159 permits entities to choose to measure many financial instruments and certain other items at fair value that are not currently required to be measured at fair value. SFAS 159 is effective for fiscal years beginning after November 15, 2007 and was adopted by the Company on August 1, 2008. The Company did not elect the fair value option and therefore the adoption of SFAS 159 did not have a materialan impact on the Company’s financial statements.

In December 2007, the FASB issued SFAS No. 141(R),Business Combinations (SFAS 141(R)), which changes the accounting for business combinations and their effects on the financial statements. SFAS 141(R) will be effective for the Company at the beginning of Fiscal 2010. The adoptionIn February 2009, the FASB issued FASB Staff Position 141(R)-a,Accounting for Assets Acquired and Liabilities Assumed in a Business Combination That Arise from Contingencies (FSP FAS 141(R)-a), which will amend certain provisions of SFAS 141(R) is. The adoptions of SFAS 141(R) and FSP FAS 141(R)-a are not expected to have a material impact on the Company’s consolidated financial statements.

In March 2008, the FASB issued SFAS No. 161,Disclosures about Derivative Instruments and Hedging Activities, an amendment of FASB Statement No. 133 (SFAS 161). SFAS 161 requires enhanced disclosures about an entity’s derivative and hedging activities, including (a) how and why an entity uses derivative instruments, (b) how derivative instruments and related hedged items are accounted for under SFAS No. 133,Accounting for Derivative Instruments and Hedging Activities, and (c) how derivative instruments and related hedged items affect an entity’s financial position, financial performance and cash flows. SFAS 161 is effective for the Company beginning in the third quarter of Fiscal 2009. The adoption of SFAS 161 only requires additional disclosures about the Company’s derivatives and thus will not affect the Company’s consolidated financial statements.

Note M – Subsequent Event11

On November 14, 2008, the Company issued an $80 million senior unsecured note. The note is due on November 14, 2013. The debt was issued at face value and bears interest payable semi-annually at a rate of 6.59 percent. The proceeds from the note will be used to refinance existing debt or for general corporate purposes.

Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

The Company is a worldwide manufacturer of filtration systems and replacement parts. The Company’s product mix includes air and liquid filtration systems and exhaust and emission control products. Products are manufactured at 3940 plants around the world and through three joint ventures.

The Company has two reporting segments: Engine Products and Industrial Products. Products in the Engine Products segment consist of air filtration systems, exhaust and emissions systems, liquid filtration systems and replacement parts. The Engine Products segment sells to original equipment manufacturers (OEMs) in the construction, mining, agriculture and transportation markets and to independent distributors, OEM dealer networks, private label accounts and large equipment fleets. Products in the Industrial Products segment consist of dust, fume and mist collectors, compressed air purification systems, liquid filtration systems, intake air filtration systems for gas turbines, and specialized air filtration systems for diverse applications including computer disk drives. The Industrial Products segment sells to various industrial end-users, OEMs of gas-fired turbines and OEMs and end users requiring clean air and liquids.

The following discussion of the Company’s financial condition and results of operations should be read in conjunction with the Consolidated Financial Statements and Notes thereto and other financial information included elsewhere in this report.

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Overview

The Company reported record diluted net earnings per share of $0.60$0.43 for the firstsecond quarter of Fiscal 2009, up from $0.53$0.42 in the firstsecond quarter of the prior year. Net income for the quarter was $48.0$33.8 million, up 10.7 percent from $43.3compared to $34.1 million in the firstsecond quarter of the prior year. The impact of foreign currency translation had minimal impact ondecreased reported net earnings by 4.8 percent in the quarter. The Company reported record sales in the firstsecond quarter of Fiscal 2009 of $573.3$460.6 million, an increasea decrease of 9.110.0 percent from $525.6$511.8 million in the firstsecond quarter of the prior year. The impact of foreign currency translation increaseddecreased reported sales by 0.74.7 percent in the quarter.

Overall,The global recession impacted the Company’s globally-diversified portfolio of filtration businesses providedCompany significantly in the foundation to deliver another quarter of growth.second quarter. The drop in sales volume was widespread, particularly in the Engine Products segment. Continued strengthstrong sales in the aerospace and defense, industrial filtration,retrofit emissions and gas turbine businesses helped to offset weaknessweaknesses in ourthe other end markets. Geographically,Conditions were also generally weak internationally, as local currency sales grewdecreased 14 percent in Asia 11and 7 percent in Europe, while sales in the Americas were flat as compared to last year.

The drop in production volumes caused under absorption of fixed manufacturing and 4operating expenses. In addition to the Company’s continued focus on operating expense controls and product cost reductions, the Company completed workforce reductions within many of its businesses as it balanced staffing with its Customers’ current order levels. Consequently, the Company has already reduced its global workforce by approximately 1,850 temporary, contract and regular employees since the beginning of this fiscal year and incurred $4.3 million of related costs during the current quarter. As a result of the combination of the under absorption of fixed costs and restructuring related expenses, the Company’s operating margin in the second quarter was 6.0 percent and below last year’s margin of 9.9 percent.

The Company’s balance sheet remains strong, and it expects to continue generating free cash flow to fund its operations. For the six-month period, the Company generated $70.6 million in Europe. free cash flow, a $52.6 million increase over the prior year.

The Company experienced higher raw materialis planning additional restructuring actions in the third quarter and expects to incur approximately $2.9 million of related costs in the firstthird quarter and worked to offsetas a portionresult of these actions. The Company expects that the impact through a combination of pricingits restructuring actions to date, together with Customers and internalrestructuring actions still planned, will generate approximately $85 million of ongoing annualized cost reduction efforts. Thesavings when completed.

While the Company has been proactively managing its business and working aggressivelydoes not have visibility of either the length or depth of this recession, it is now planning for this global downturn to reduce expense levels to help offsetcontinue at least through the challenging global economic environment it expects to face this year, and the progress is evident as operating expenses decreased to 20.4 percentbalance of sales this quarter compared to 22.0 percent in fourth quarter of Fiscal 2008.calendar 2009.

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Results of Operations

Almost all regions in which the Company operates have been impacted by the global recession. Sales in the United States increased $20.5decreased $4.7 million or 9.52.4 percent for the firstsecond quarter of Fiscal 2009 compared to the firstsecond quarter of the prior year. Total international sales in U.S. dollars increased $27.2decreased $46.4 million or 8.814.9 percent in the firstsecond quarter compared to the prior year. In U.S. dollars, Europe sales increased $6.9decreased $29.8 million or 4.016.9 percent, Asia sales increased $16.1decreased $15.8 million or 14.114.2 percent and other international sales increased $4.2decreased $0.8 million or 16.93.3 percent for the firstsecond quarter of Fiscal 2009 as compared to the prior year period. Translated at constant exchange rates, total international sales increased 7.6decreased 7.2 percent over the prior year quarter. For the six month period ended January 31, 2009, sales in the United States increased $15.8 million or 3.8 percent from the prior year, and total international sales in U.S. dollars decreased $19.3 million or 3.1 percent from the prior year.

The impact of foreign currency translation during the firstsecond quarter of Fiscal 2009 increaseddecreased sales by $3.6$24.2 million, or 0.74.7 percent. The impact of foreign currency translation on the year-to-date results as of the second quarter of Fiscal 2009 decreased sales by $20.6 million. Worldwide sales for the firstsecond quarter of Fiscal 2009, excluding the impact of foreign currency translation, increased 8.4decreased 5.3 percent from the firstsecond quarter of the prior year. The impact of foreign currency translation decreased net income by $0.3$1.6 million and $2.0 million for the three and six month period of Fiscal 2009.

For the past several years the Company benefited from a positive impact from foreign exchange – more specifically the weaker U.S. Dollar versus the Euro. However, during the first quarterperiods of Fiscal 2009, that changed dramatically with a resurgence in the strength of the U.S. Dollar. Based on exchange rate levels in effect in November 2008, the Company anticipates that the resurgence in the strength of the U.S. Dollar will decrease Fiscal 2009 full year sales by approximately $133 million, or 6 percent, from Fiscal 2008. Including this foreign currency translation assumption, the Company expects full year sales in both the Engine and Industrial Products’ segments to be flat or slightly down and for total Company sales to be between $2.15 billion and $2.23 billion for the full year. In local currency, the Company expects low single-digit percentage sales growth in both segments and for the total Company.respectively.

Although net sales excluding foreign currency translation and net earnings excluding foreign currency translation are not measures of financial performance under GAAP, the Company believes they are useful in understanding its financial results. Both measures enable the Company to obtain a clearer understanding of the operating results of its foreign entities without the varying effects that changes in foreign currency exchange rates may have on those results. A shortcoming of these financial measures is that they do not reflect the Company’s actual results under GAAP. Management does not intend these items to be considered in isolation or as a substitute for the related GAAP measures.

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Following is a reconciliation to the most comparable GAAP financial measure of this non-GAAP financial measure (thousands of dollars):

Gross margin for the firstsecond quarter of Fiscal 2009 was 32.629.1 percent compared to 32.931.9 percent for the firstsecond quarter in the prior year. The primary drivers for the change in the quarter include a $7.0 million unfavorable impactHigher under absorption of fixed costs due to the delaydrop in recovery ofproduction volumes negatively impacted gross margin by $9.7 million. The Company also had $2.4 million in restructuring costs which reduced gross margin in the quarter. Purchased material cost increases from several major Engine Customers, partiallycosts remained higher than last year’s levels and have mostly been offset by a $1.3 million favorable impact duecombination of internal cost reduction efforts and selective price increases to higher salesour Customers. During the second quarter of Fiscal 2008, the Company began utilizing a new warehouse management system at its main U.S. distribution center. The Company encountered issues during the transition to the new system which resulted in our Industrial businesses (which deliver a higher gross margin) and a $3.4 million favorable impact due to product cost reductions and manufacturing productivity improvements. Plant rationalization and start-up costs were $1.0approximately $2.1 million in incremental distribution charges for the first quarter, which includes a loss associated withthree months ended January 31, 2008. In addition, sales were impacted by approximately $5.5 million as the sale ofCompany experienced delays in processing Customer orders for the air dryer business in Maryville, Tennessee, compared to prior year quarter costs of $0.3 million. three months ended January 31, 2008.

Operating expenses during the firstsecond quarter of Fiscal 2009 were $117.0$106.2 million, or 20.423.0 percent of sales, compared to $109.1$112.6 million, or 20.822.0 percent of sales, in the prior year period. This decrease as aThe second quarter of Fiscal 2009 included $2.8 million for the majority of the Company’s annual stock option expense

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(compared to $3.0 million in the prior year quarter) and $1.9 million in headcount reduction costs. Year-to-date operating expenses were 21.6 percent of sales, was driven by a focus on cost containment efforts, including a global hiring freeze, targeted restructuring within some businesses and functions, a reduction of contractors and temporary workers and other discretionary spending cuts.up from 21.4 percent in the prior year, due to the decline in sales.

Other income for the firstsecond quarter of Fiscal 2009 totaled $3.1$2.6 million, compared to $0.1$2.2 million of other expenseincome in the firstsecond quarter of the prior year. Other income for the firstsecond quarter of Fiscal 2009 consisted of income from unconsolidated affiliates of $0.7 million, royalty income of $2.0$1.7 million, interest income of $0.3$0.6 million, foreign exchange gains of $0.2$0.5 million and other expensesmiscellaneous income of $0.1$0.5 million partially offset by losses in equity method investments of $0.7 million. For the firstsecond quarter of Fiscal 2009, interest expense was $4.3$4.7 million, a slight increase as compared toup from $4.1 million in the firstsecond quarter of the prior year, due to higher debt levels. Year-to-date, other income totaled $5.7 million compared to $2.0 million reported in the prior year. Year-to-date interest expense was $9.0 million, up from $8.3 million in the prior year.

The effective tax rate for the quarterthree months ended January 31, 2009 was 30.0a benefit of (31.5) percent, compared to 27.1 percenta prior year rate of 30.0 percent. The effective tax rate for the prior year first quarter.six months ended January 31, 2009 and 2008 was 13.2 percent and 28.4 percent, respectively. The higher rate this quarter was primarily due to a $2.1six months ended January 31, 2009 contains $16.7 million decrease inof discrete tax benefits, recognized this$15.0 million of which occurred in the second quarter. Second quarter comparedbenefits from the effective settlements of long-standing court cases and examinations in various jurisdictions for tax years 2003 to $3.92006 totaled $6.2 million. The remaining $8.8 million inof benefits were primarily the result of the reassessment of the corresponding unrecognized tax benefits occurringfor the subsequent open years. The prior year six month period contained $4.0 million of discrete tax reductions, primarily related to the expiration of statutes on unrecognized tax benefits and the reduction in beginning of the prior year deferred tax liabilities related to enacted foreign tax rate changes, andnearly all of which occurred in the expiration of statutes on unrecognized tax benefits. The current yearfirst quarter. Absent these items, the average underlying tax rate benefitedfor the year-to-date period has decreased from $1.8 million relatedthe prior year by 1.2 points to theapproximately 31 percent. The reinstatement of the Research and Experimentation Credit for Fiscal 2008credit, the mix of earnings between entities, and an adjustmentincreased domestic manufacturing deduction all contributed to an income tax reserve related to foreign tax audit exposure.the reduction.

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Operations by Segment

Following is financial information for the Company’s Engine Products and Industrial Products segments. Corporate and Unallocated includes corporate expenses determined to be non-allocable to the segments and interest income and expense. Segment detail is summarized as follows (thousands of dollars):

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Following are net sales by product category within the Engine Products and Industrial Products segments (thousands of dollars):

Engine Products Segment    For the firstsecond quarter of Fiscal 2009, worldwide Engine Products sales were $308.8$242.1 million, an increasea decrease of 5.314.9 percent from $293.2$284.3 million in the firstsecond quarter of the prior year. Total firstsecond quarter Engine Products sales in the United States increaseddecreased by 6.55.8 percent compared to the same period in the prior year and international sales increaseddecreased by 4.223.6 percent as discussed below. The impact of foreign currency translation during the second quarter of Fiscal 2009 decreased sales by $11.1 million, or 3.9 percent. Earnings before income taxes as a percentage of Engine Products segment sales of 11.74.3 percent decreased from 14.510.4 percent in the prior year. The Engine Products segment has been negatively impacted by deteriorating global economic conditions, specificallyunder absorption of fixed manufacturing costs and operating expenses due to the drop in Transportation Products.sales volumes and increased costs of $2.5 million related to restructuring. Year-to-date, worldwide net sales were $550.9 million, a decrease of 4.6 percent from $577.5 million in the prior year. International Engine Products sales decreased 9.7 percent and sales in the United States increased 0.5 percent from the prior year on a year-to-date basis. The impact of foreign currency translation on the year-to-date results as of the second quarter of Fiscal 2009 decreased sales by $9.5 million, or 1.6 percent. Year-to-date, earnings before income taxes as a percentage of Engine Products segment sales of 8.4 percent decreased from 12.4 percent in the prior year.

Worldwide sales of Off-road Products in the firstsecond quarter of Fiscal 2009 were $114.8$93.9 million, an increasea decrease of 9.712.1 percent from $104.6$106.8 million in the firstsecond quarter of the prior year. Domestic sales in Off-road Products increased 12.90.7 percent asdue to strong aerospace and defense agriculturesales and non-residential construction markets more than offset a decreasethe acquisition of Western Filter Corporation, which contributed to $6.2 million of the increase. Strong demand for filters for Black Hawk helicopters and other military equipment increased sales by $2.1 million in residential construction.the quarter. Spending in the U.S. residential construction marketmarkets is down more than 20 percent over prior year. Strong demand for replacement filters for Black Hawk helicopters, along with retrofit sales for these helicopters, increased sales by $6.5 millionyear, resulting in a decrease in the quarter.sales of the Company’s products into those markets. In addition, mining activity has slowed due to decreased commodity prices. International sales were up 6.1down 26.0 percent from the firstsecond quarter of the prior year with increasesdecreases in Europe and Asia of 4.628.5 percent and 11.022.6 percent, respectively. Sales to the European agricultureagricultural end market were strongslightly favorable over the prior year quarter, but were offset by significant declines in the quarter, offset by a declineconstruction equipment end market associated with decreased construction activity due to the economic downturn. In Asia, sales have declined significantly in sales toJapan in the construction end markets.markets, offset slightly by foreign exchange gains. Year-to-date, worldwide Off-road Products sales totaled $208.7 million, a decrease of 1.3 percent from $211.5 million in the prior year. Year-to-date sales of Off-road Products increased 6.8 percent in the United States and decreased 10.4 percent internationally over the prior year.

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Worldwide sales inof Transportation Products in the firstsecond quarter of Fiscal 2009 were $27.7$16.4 million, a decrease of 7.942.7 percent from $30.1$28.7 million in the firstsecond quarter of the prior year. International Transportation Products sales increaseddecreased by 7.638.1 percent driven by increaseddecreased sales in Europe and Asia of 10.158.7 percent while other regions remained relatively flat.and 20.4 percent, respectively, reflecting the current economic downturn for freight activity and transportation equipment build rates. Sales decreased in the United States by 19.546.5 percent primarily as a result of a 3119 percent dropdecrease in Class 8 truck build rates and a 32 percent decrease in medium duty truck build rates by the Company’s Customers over the prior year quarter. Year-to-date, worldwide Transportation Products sales totaled $44.1 million, a decrease of 24.9 percent from $58.8 million in the prior year. International Transportation Products sales decreased 15.2 percent from the prior year on a year-to-date basis. Transportation Products sales in the United States decreased 32.5 percent from the prior year on a year-to-date basis as a result of the rapid deceleration of economic conditions and low build rates. No prebuy is expected for Transportation Products in advance of the Environmental Protection Agency’s 2010 diesel emissions regulations.

Worldwide sales of Aftermarket Products in the firstsecond quarter were $166.2$131.8 million, an increasea decrease of 4.911.4 percent from $158.4$148.8 million in the firstsecond quarter of the prior year. Despite U.S. truck utilization rates decreasing two percent over prior year, the Company’s U.S. Aftermarket Products sales grew 7.6decreased 1.8 percent driven by decreases in utilization rates in the mining, construction and transportation industries, partially offset by increases in retrofit emissionsemission sales of $4.3$1.5 million in the quarter. International sales were up 2.5down 19.7 percent from the prior year quarter, primarily driven by a sales increasedecrease in AsiaEurope of 9.5 percent. Sales volumes29.8 percent, due to the worsening economic conditions in Europe. Year-to-date, worldwide Aftermarket Products sales totaled $298.0 million, a decrease of 3.0 percent from $307.3 million in the prior year. Year-to-date Aftermarket Products sales increased 3.1 percent in Asia as a result of the Company’s focus on expanding its salesUnited States and distribution presence acrossdecreased 8.4 percent internationally over the region.prior year.

Industrial Products Segment    For the firstsecond quarter of Fiscal 2009, worldwide sales in the Industrial Products segment were $264.5$218.5 million, an increasea decrease of 13.83.9 percent from $232.4$227.4 million in the firstsecond quarter of the prior year. Total firstsecond quarter international Industrial Products sales were up 12.8down 7.4 percent compared to the same period in the prior year, while sales in the United States increased by 16.15.7 percent. The impact of foreign currency translation during the second quarter of Fiscal 2009 decreased sales by $13.1 million, or 5.7 percent. Earnings before income taxes as a percentage of Industrial Products segment sales of 13.18.0 percent decreased from 9.0 percent in the prior year. This earnings weakening over the prior year was driven by an unfavorable product mix, increased costs of $1.8 million related to restructuring, and under absorption of fixed manufacturing costs and operating expenses due to the drop in sales volumes. Year-to-date, worldwide net sales were $483.0 million, an increase of 5.0 percent from $459.8 million in the prior year. International Industrial Products sales increased 2.7 percent and sales in the United States increased 11.2 percent from the prior year on a year-to-date basis. The impact of foreign currency translation on the year-to-date results as of the second quarter of Fiscal 2009 decreased sales by $11.1 million, or 2.4 percent. Year-to-date, earnings before income taxes as a percentage of Industrial Products segment sales of 10.8 percent increased from 10.39.7 percent in the prior year. This earnings improvement over the prior year was driven by an increase in plant utilization due to higher volumes in the Industrial Filtration Solutions Products business during the first quarter, the impact of cost control measures and the non-recurrence of large low margin large projects shipped in Fiscal 2008.

Worldwide sales of Industrial Filtration Solutions Products in the second quarter were $155.2$127.4 million, an increasea decrease of 13.98.2 percent from $136.3$138.8 million in the prior year. International sales grew 15.4decreased 8.6 percent over the prior year with sales in Europe andshowing a decrease of 18.2 percent while Asia showing increasessales showed an increase of 9.7 percent and 30.8 percent, respectively. Although general economic conditions21.3 percent. Excluding foreign currency, international sales increased 0.6 percent. The decline in Europe declined,was due to reduced demand remained strong for industrial dust collectors and compressed air filtration equipment which fell with the Company’s Industrial Filtration Solutions products.dramatic downturn in general manufacturing activity during the quarter. The increase in Asia was partially due to the shipment of aseveral large projectindustrial dust collection systems that were shipped in the quarter, which totaled $2.0 million.quarter. Domestic sales increased 11.0decreased 7.5 percent over the prior year quarter. MachineIn addition to the sale of the air dryer business in Maryville, Tennessee, which decreased sales $2.3 million over last year, machine tool consumption indecreased approximately 50 percent over the U.S. increased over aprior year, ago, which contributed to healthythe decline in demand for the Company’s products.products in the United States. The impact of the recentFebruary 4, 2008 acquisition of LMC West, Inc. also contributed approximately three percent ofincreased the Company’s U.S. sales increase.by approximately

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$1.5 million over the prior year quarter. Year-to-date, worldwide sales of Industrial Filtration Solutions products were $282.6 million, up 2.7 percent from $275.1 million in the prior year. International Industrial Filtration Solutions product sales increased 3.0 percent from the prior year on a year-to-date basis. Sales in the United States increased 2.1 percent from the prior year on a year-to-date basis.

Worldwide sales of the Company’s Gas Turbine Products in the firstsecond quarter were $59.9$57.0 million, an increase of 22.438.2 percent from sales of $48.9$41.3 million in the firstsecond quarter of the prior year. Growth continuedSales were strong compared to be goodthe prior year as a significant number of projects shipped in both the power generation and oil and gas end markets.quarter. The Gas Turbine Products sales are typicallyinclude large systems and as a result the shipments and revenues can fluctuate from quarter to quarter. Year-to-date, worldwide Gas Turbine Products sales were $116.9 million, up 29.6 percent from $90.2 million in the prior year.

Worldwide sales of Special Application Products in the second quarter were $49.4$34.1 million, an increasea decrease of 4.728.0 percent from $47.2$47.4 million in the prior year period. Domestic Special Application Products sales increased 11.8decreased 1.0 percent. International sales of Special Application Products increased 3.7decreased 31.0 percent over the prior year, primarilyyear. The primary decreases internationally were in Asia and Europe, which increased 32.6decreased 34.1 and 14.3 percent, due to sales of PTFE membranes, while sales in Asia decreased 1.0 percentrespectively, due to a slowdownsignificant reduction in demand for filters for hard disk drive filters.drives and semiconductor fabrications based on a worldwide contraction in the end markets for computers, data storage devices and other electronic products only partially offset by sales growth from the Company’s PTFE membrane filtration products. Year-to-date, worldwide Special Application Products sales were $83.5 million, a decrease of 11.7 percent from $94.6 million in the prior year, driven by an international Special Application Products sales decrease of 13.9 percent over the prior year.

Liquidity and Capital Resources

The Company generated $51.8$93.8 million of cash and cash equivalents from operations during the first threesix months of Fiscal 2009. Operating cash flows increased by $30.0$47.5 million from the same period in the prior year, primarily as a result of an increase in net earnings of $4.6 million and slower growthdecreases in accounts receivable and inventory balances which resulted in $19.8$50.1 million and $61.1 million of additional cash flow from operations as compared to the prior year.year, respectively. Operating cash flows, additional borrowings and cash on hand were used to support $11.5$23.3 million in capital additions, the acquisition of Western Filter Corporation for $78.5 million, the repurchase of 0.8 million outstanding shares of the Company’s common stock for $32.8 million and the payment of $8.5$17.4 million in dividends. For additional information regarding share repurchases see Part II Item 2, “Unregistered Sales of Equity Securities and Use of Proceeds.”

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At the end of the firstsecond quarter, the Company held $69.1$76.0 million in cash and cash equivalents, down from $83.4 million at July 31, 2008. Short-term debt totaled $206.9$111.5 million, updown from $139.4 million at July 31, 2008, primarily due to the acquisition of Western Filter Corporation.cash generated from operations The amount of unused lines of credit as of OctoberJanuary 31, 20082009 was approximately $373.0$484.7 million. Long-term debt of $173.7$256.7 million at OctoberJanuary 31, 2008 decreased2009 increased from $176.5 million at July 31, 2008, due to payments made on2008. The increase in long-term debt andis a result of the issuance of an $80.0 million senior unsecured note on November 14, 2008 at an interest rate of 6.59 percent due November 14, 2013. Long-term debt represented 20.927.9 percent of total long-term capital, defined as long-term debt plus total shareholders’ equity, compared to 19.3 percent at July 31, 2008. The Company has not made and does not anticipate making any contributions to its U.S. pension plans for the remainder of Fiscal 2009, and estimates that it will contribute up to an additional $4.0$2.9 million to its non-U.S. pension plans during the remainder of Fiscal 2009.

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The following table summarizes the Company’s contractual obligations as of OctoberJanuary 31, 20082009 (in thousands):

At OctoberJanuary 31, 2008,2009, the Company had a contingent liability for standby letters of credit totaling $18.5 million that have been issued and are outstanding. The letters of credit guarantee payment to beneficial third parties in the event the Company is in breach of specified financing agreement and insurance contract terms as detailed in each letter of credit. At OctoberJanuary 31, 2008,2009, there were no amounts drawn upon these letters of credit.

The Company has a five-year, multi-currency revolving facility with a group of banks under which the Company may borrow up to $250 million. This facility expires on April 2, 2013. As of OctoberJanuary 31, 2008,2009, there was $175.0$80.0 million of borrowings under this facility.

Certain note agreements contain debt covenants related to working capital levels and limitations on indebtedness.indebtedness and interest expense. As of OctoberJanuary 31, 2008,2009, the Company was in compliance with all debtsuch covenants. The Company currently expects to remain in compliance with these covenants in the foreseeable future, even in spite of the global economic downturn.

On November 14, 2008, the Company issued an $80 million senior unsecured note. The note is due on November 14, 2013. The debt was issued at face value and bears interest payable semi-annually at a rate of 6.59 percent. The proceeds from the note will bewere used to refinance existing debt orand for general corporate purposes.

During the first quarter of Fiscal 2009, the global credit market began to experience a significant tightening of credit availability and interest rate volatility. This crisis resulted in reduced funding available for commercial banks and corporate debt issuers. As a result, capital market financing became

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more expensive and less available. The Company has assessed the implications of these factors on its current business and believes that its current financial resources are sufficient to continue financing its operations. There can be no assurance, however, that the cost or availability of future borrowings will not be impacted by ongoing capital market disruptions.

The Company believes that the combination of present capital resources, internally generated funds and unused financing sources are adequate to meet cash requirements for the next twelve-month period.period, as the Company expects to continue to generate positive cash flows from operations.

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The Company does not have any off-balance sheet arrangements, with the exception of the guarantee of 50 percent of certain debt of its joint venture, Advanced Filtration Systems, Inc., as further discussed in Note H of the Company’s Notes to Condensed Consolidated Financial Statements.

Critical Accounting Policies

There have been no material changes to the Company’s critical accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended July 31, 2008.

Outlook

Based on exchange rates in effect in November 2008,The global recession impacted the Company anticipates thatsignificantly during the resurgencequarter. The Company saw a widespread decrease in sales volume, particularly in the strengthEngine Products segment. As a result of this, along with updates from its Customers, the U.S. Dollar will decrease Fiscal 2009Company has revised its full year sales by approximately $133 million, or 6 percent, from Fiscal 2008. Including this foreign currency translation assumption,guidance to the Company expects full year sales in both the Engine and Industrial Products’ segments to be flat or slightly down and for total Company sales to be between $2.15 billion and $2.23 billion for the full year. In local currency, the Company expects low single-digit percentage sales growth in both segments and for the total company.levels discussed below.

Engine Products Segment    The Company expects forecasted full year sales to decrease 11 to 16 percent, inclusive of the impact of foreign currency translation.

Industrial Products Segment    The Company now forecasts full year sales to decrease 10 to 15 percent, inclusive of the impact of foreign currency translation.

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Other

Forward-Looking Statements19

SAFE HARBOR STATEMENT UNDER THE SECURITIES REFORM ACT OF 1995

The Company desires to take advantage of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995 (the “Act”) in connection with this Quarterly Report on Form 10-Q and Risk Factorsis making this cautionary statement in connection with such safe harbor legislation. This announcement contains forward-looking statements, including forecasts, plans, and projections relating to our business and financial performance and global economic conditions, which involve uncertainties that could materially impact results. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

The Company, through its management, may make forward-looking statements reflecting the Company’s current views with respect to future events and financial performance. These forward-looking statements, which may be in reports filed under the Securities Exchange Act of 1934, as amended (the Exchange Act), in press releases and in other documents and materials as well as in written or oral statements made by or on behalf of the Company, are subject to certain risks and uncertainties, including those discussed in Item 1A of the Company’s Annual Report on Form 10-K for the year ended July 31, 2008, which could cause actual results to differ materially from historical results or those anticipated. These uncertainties and other risk factors, include but are not limited to risks associated withwith: world economic factors and the ongoing and deepening economic downturn that is negatively impacting all regions of the world, the recent significant reduction in sales volume and orders, our Customers’ financial condition, currency fluctuations, commodity prices, world economic factors, political factors, the company’s international operations, highly competitive markets, governmental laws and regulations, including the impact of the unprecedented economic stimulus measures being implemented by governments around the world, the implementation of our new information systems, and other factors listedincluded in ourItem 1A of the Company’s Annual Report on Form 10-K and our reports on Form 10-Q.10-K.

In particular the Company desires to take advantage of the protections of the Private Securities Litigation Reform Act of 1995 in connection with the forward-looking statements made in this Quarterly Report on Form 10-Q. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Item 3.  Quantitative and Qualitative Disclosures about Market Risk

There have been no material changes in the reported market risk of the Company since July 31, 2008. See further discussion of these market risks in the Company’s Annual Report on Form 10-K for the year ended July 31, 2008.

Item 4.  Controls and Procedures

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PART II. OTHER INFORMATION

Item 1.  Legal Proceedings

In accordance with SFAS No. 5, “Accounting for Contingencies,” (SFAS No. 5), the Company records provisions with respect to identified claims or lawsuits when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Claims and lawsuits are reviewed quarterly and provisions are taken or adjusted to reflect the status of a particular matter. The Company believes the recorded reserves in its consolidated financial statements are adequate in light of the probable and estimable outcomes. Any recorded liabilities were not material to the Company’s financial position, results of operation and liquidity and the Company does not believe that any of the currently identified claims or litigation will materially affect its financial position, results of operation and liquidity.

Item 1A.  Risk Factors

There are inherent risks and uncertainties associated with our global operations that involve the manufacturing and sale of products for highly demanding Customer applications throughout the world. These risks and uncertainties could adversely affect our operating performances or financial condition. The “Risk Factors” section in the Company’s Annual Report on Form 10-K for the year ended July 31, 2008 includes a discussion of these risks and uncertainties. There have been no material changes fromIn light of the riskcurrent global economic slowdown and the unprecedented volatility in the world’s financial markets, we want to further highlight risks and uncertainties associated with: world economic factors, disclosedthe recent significant reduction in sales volume and orders, our Customers’ financial condition, currency fluctuations, commodity prices, political factors, the company’s international operations, highly competitive markets, governmental laws and regulations, including the impact of the unprecedented economic stimulus measures being implemented by governments around the world, the implementation of our new information systems, and other factors included in Item 1A of the Company’s Annual Report on Form 10-K for the year ended July 31, 2008.10-K. We undertake no obligation to publicly update or revise any forward-looking statements.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds

Repurchases of Equity Securities

The following table sets forth information in connection with purchases made by, or on behalf of, the Company or any affiliated purchaser of the Company, of shares of the Company’s common stock during the quarterly period ended OctoberJanuary 31, 2008.2009.

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Item 4.  Submission of Matters to a Vote of Security Holders

Item 6.  Exhibits

*3-A – Restated Certificate of Incorporation of Registrant as currently in effect (Filed as Exhibit 3-A to Form 10-Q Report for the First Quarter ended October 31, 2004)

*3-B – Certificate of Designation, Preferences and Rights of Series A Junior Participating Preferred Stock of Registrant, dated as of March 3, 2006 (Filed as Exhibit 3-B to Form 10-Q Report for the First Quarter ended October 31, 2006)

*3-C – Amended and Restated Bylaws of Registrant (as of January 25, 2008) (Filed as Exhibit 3.1 to Form 8-K Report filed January 31, 2008)30, 2009)

*4 – **

*4-A – Preferred Stock Amended and Restated Rights Agreement between Registrant and Wells Fargo Bank, N.A., as Rights Agent, dated as of January 27, 2006 (Filed as Exhibit 4.1 to Form 8-K Report filed February 1, 2006)

10-A – 1980 Master Stock Compensation Plan as Amended

10-B – Form of Performance Award Agreement under 1991 Master Stock Compensation Plan

10-C – Deferred Compensation Plan for Non-employee Directors as amended

10-D – Independent Director Retirement and Benefit Plan as amended

10-E – 1991 Master Stock Compensation Plan as amended

10-F – Form of Restricted Stock Award under 1991 Master Stock Compensation Plan

10-G – Form of Agreement to Defer Compensation for certain Executive Officers

10-H – Stock Option Program for Non-employee Directors

10-I – Note Purchase Agreement among Donaldson Company, Inc. and certain listed Insurance Companies Dated as of July 15, 1998

31-A – Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

31-B – Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32 – Certifications of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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