================================================================================ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------------------- AMENDMENT NO. 10 TO SCHEDULE TO (RULE 14d-100) TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 DANA CORPORATION (Name of Subject Company (Issuer)) DELTA ACQUISITION CORP. ARVINMERITOR, INC. (Names of Filing Persons (Offerors)) COMMON STOCK, PAR VALUE $1.00 PER SHARE (Title of Class of Securities) 23581110 (CUSIP Number of Class of Securities) VERNON G. BAKER, II, ESQ. ARVINMERITOR, INC. 2135 WEST MAPLE ROAD TROY, MICHIGAN 48084 TELEPHONE: (248) 435-1000 (Name, Address and Telephone Numbers of Person Authorized to Receive Notices and Communications on Behalf of Filing Persons) COPIES TO: DENNIS J. FRIEDMAN, ESQ. STEVEN P. BUFFONE, ESQ. GIBSON, DUNN & CRUTCHER LLP 200 PARK AVE. NEW YORK, NEW YORK 10166 TELEPHONE: (212) 351-4000 [ ] Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer: [X] Check the appropriate boxes below to designate any transactions to which the statement relates: [X] third-party tender offer subject to Rule 14d-1. [ ] issuer tender offer subject to Rule 13e-4. [ ] going-private transaction subject to Rule 13e-3. [ ] amendment to Schedule 13D under Rule 13d-2. Check the following box if the filing is a final amendment reporting the results of the tender offer: [ ] ================================================================================

SCHEDULE TO This Amendment No. 10 to the Tender Offer Statement on Schedule TO amends and supplements the statement originally filed on July 9, 2003 (as amended or supplemented prior to the date hereof, the "Schedule TO") by ArvinMeritor, Inc., an Indiana corporation ("Parent"), and Delta Acquisition Corp., a Virginia corporation and a wholly owned subsidiary of Parent (the "Purchaser"). The Schedule TO relates to the offer by the Purchaser to purchase (1) all outstanding shares ("Shares") of common stock, par value $1.00 per share, of Dana Corporation, a Virginia corporation (the "Company"), and (2) unless and until validly redeemed by the board of directors of the Company, the associated rights to purchase shares of Series A Junior Participating Preferred Stock, no par value, of the Company (the "Rights") issued pursuant to the Rights Agreement, dated as of April 25, 1996 (as amended from time to time, the "Rights Agreement"), by and between the Company and Chemical Mellon Shareholder Services L.L.C., as Rights Agent, at a price of $15.00 per Share, net to the seller in cash, without interest, upon the terms and subject to the conditions set forth in the Offer to Purchase, dated July 9, 2003 (as amended or supplemented prior to the date hereof, the "Offer to Purchase"), and in the related Letter of Transmittal. Unless the context otherwise requires, all references to the Shares shall be deemed to include the associated Rights, and all references to the Rights shall be deemed to include the benefits that may inure to holders of Rights pursuant to the Rights Agreement. This Amendment No. 10 to the Schedule TO is being filed on behalf of the Purchaser and Parent. Capitalized terms used and not defined herein have the meanings specified in the Offer to Purchase and the Schedule TO. The item numbers and responses thereto below are in accordance with the requirements of Schedule TO. ITEM 11. ADDITIONAL INFORMATION The Introduction to the Offer to Purchase is hereby amended by deleting the ninth paragraph of such Introduction (as previously amended) in its entirety and replacing it with the following: "In addition, on July 9, 2003, Parent and the Purchaser commenced an action against the Company in the United States District Court for the Western District of Virginia seeking a declaratory judgment that their statements and disclosures in conjunction with the Offer comply with applicable federal law (the "Western District of Virginia Action"). On July 25, 2003, Parent and the Purchaser amended their complaint in the Western District of Virginia Action to add a claim for a declaratory judgment that the Company's statements and disclosures in response to, or otherwise relating to, the Offer, including, but not limited to, its Schedule 14D-9, as amended (the "Schedule 14D-9"), contain material misrepresentations and omissions, and represent fraudulent, deceptive or manipulative acts on the part of the Company, in violation of Section 14(e) of the Exchange Act. Parent and the Purchaser's amended complaint also seeks an order requiring the Company to correct by public means its material misstatements and omissions, and its fraudulent, deceptive, or manipulative acts. Finally, Parent and the Purchaser seek in the amended complaint an injunction prohibiting the Company from further disseminating false and misleading statements, from making any additional material misstatements or omissions, and from committing any other fraudulent, deceptive or manipulative acts that would further harm the Offer. On August 21, 2003, the Company brought various counterclaims against Parent and the Purchaser seeking, among other things, a declaratory judgment that Parent has violated Sections 14(d) and 14(e) of the Exchange Act and the rules promulgated thereunder, an order requiring Parent to file disclosures correcting allegedly materially misleading statements and omissions and extending the Offer in order to enable the Company's shareholders to analyze such disclosures, and an order enjoining Parent from pursuing the Offer. Parent and the Purchaser believe the counterclaims are without merit and will contest them vigorously." ITEM 12. EXHIBITS (a)(1)(A) Offer to Purchase, dated July 9, 2003.* (a)(1)(B) Letter of Transmittal.* (a)(1)(C) Notice of Guaranteed Delivery.* (a)(1)(D) Letter to Brokers, Dealers, Commercial Banks, Trust Companies and other Nominees.* (a)(1)(E) Form of Letter to Clients for use by Brokers, Dealers, Commercial Banks, Trust Companies and other Nominees.* (a)(1)(F) Guidelines for Certification of Taxpayer Identification Number on Substitute Form W-9.* (a)(1)(G) Press release issued by ArvinMeritor, Inc., dated July 8, 2003, announcing ArvinMeritor's intention to commence the Offer.* (a)(1)(H) Press release issued by ArvinMeritor, Inc., dated July 9, 2003, announcing the commencement of the Offer.* (a)(1)(I) Summary Advertisement published July 9, 2003.* (a)(1)(J) Complaint filed by ArvinMeritor, Inc. on July 8, 2003 in the Circuit Court for the City of Buena Vista, Virginia.* (a)(1)(K) Complaint filed by ArvinMeritor, Inc. on July 9, 2003 in United States District Court for the Western District of Virginia.* (a)(1)(L) First Amended Complaint filed by ArvinMeritor, Inc. on July 25, 2003 in United States District Court for the Western District of Virginia.* (a)(1)(M) First Amended Complaint filed by ArvinMeritor, Inc. on August 5, 2003 in the Circuit Court for the City of Buena Vista, Virginia.* (a)(5)(A) Press release issued by ArvinMeritor, Inc., dated July 14, 2003, relating to supplemental disclosure requested by the Ohio Department of Commerce.* (a)(5)(B) Letter from ArvinMeritor, Inc. dated July 14, 2003, to Dana shareholders residing in Ohio, as posted on ArvinMeritor's website.* (a)(5)(C) Transcript of portions of ArvinMeritor's fiscal year 2003 third-quarter earnings call, held on July 21, 2003, relating to the Offer.* (a)(5)(D) Press release issued by ArvinMeritor, Inc. dated July 22, 2003, responding to Dana Corporation's rejection of the Offer.* (a)(5)(E) Text of ArvinMeritor, Inc. form of e-mail replies to investor inquiries and requests relating to the Offer.* (a)(5)(F) Press release issued by ArvinMeritor, Inc. dated July 28, 2003, discussing correspondence delivered to Dana Corporation's Committee of Independent Directors.* (a)(5)(G) Slides relating to the Offer used by ArvinMeritor, Inc. in a presentation dated August 7, 2003.* (a)(5)(H) Complaint filed by Dana Corporation on August 14, 2003 in the Court of Common Pleas of Lucas County, Ohio.* (a)(5)(I) Press release issued by ArvinMeritor, Inc. dated August 18, 2003, responding to Dana Corporation's complaint.* (a)(5)(J) Press release issued by ArvinMeritor, Inc. dated August 22, 2003, announcing its filing for HSR approval.* (a)(5)(K) Press release issued by ArvinMeritor, Inc. dated August 22, 2003, responding to Dana Corporation's answers and counterclaims to ArvinMeritor's complaints. (b) Not applicable. (c) Not applicable. (d) Not applicable. (e) Not applicable. (f) Not applicable. (g) Not applicable. (h) Not applicable. * Previously filed 1

SIGNATURE After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. DATE: AUGUST 25, 2003 DELTA ACQUISITION CORP. By: /s/ LARRY D. YOST --------------------------------------------- Name: Larry D. Yost Title: Chairman of the Board and Chief Executive Officer ARVINMERITOR, INC. By: /s/ LARRY D. YOST --------------------------------------------- Name: Larry D. Yost Title: Chairman of the Board and Chief Executive Officer 2

EXHIBIT INDEX EXHIBIT NO. DESCRIPTION - ----------- ----------- (a)(1)(A) Offer to Purchase, dated July 9, 2003.* (a)(1)(B) Letter of Transmittal.* (a)(1)(C) Notice of Guaranteed Delivery.* (a)(1)(D) Letter to Brokers, Dealers, Commercial Banks, Trust Companies and other Nominees.* (a)(1)(E) Form of Letter to Clients for use by Brokers, Dealers, Commercial Banks, Trust Companies and other Nominees.* (a)(1)(F) Guidelines for Certification of Taxpayer Identification Number on Substitute Form W-9.* (a)(1)(G) Press release issued by ArvinMeritor, Inc., dated July 8, 2003, announcing ArvinMeritor's intention to commence the Offer.* (a)(1)(H) Press release issued by ArvinMeritor, Inc., dated July 9, 2003, announcing the commencement of the Offer.* (a)(1)(I) Summary Advertisement published July 9, 2003.* (a)(1)(J) Complaint filed by ArvinMeritor, Inc. on July 8, 2003 in the Circuit Court for the City of Buena Vista, Virginia.* (a)(1)(K) Complaint filed by ArvinMeritor, Inc. on July 9, 2003 in United States District Court for the Western District of Virginia.* (a)(1)(L) First Amended Complaint filed by ArvinMeritor, Inc. on July 25, 2003 in United States District Court for the Western District of Virginia.* (a)(1)(M) First Amended Complaint filed by ArvinMeritor, Inc. on August 5, 2003 in the Circuit Court for the City of Buena Vista, Virginia.* (a)(5)(A) Press release issued by ArvinMeritor, Inc., dated July 14, 2003, relating to supplemental disclosure requested by the Ohio Department of Commerce.* (a)(5)(B) Letter from ArvinMeritor, Inc. dated July 14, 2003, to Dana shareholders residing in Ohio, as posted on ArvinMeritor's website.* (a)(5)(C) Transcript of portions of ArvinMeritor's fiscal year 2003 third-quarter earnings call, held on July 21, 2003, relating to the Offer.* (a)(5)(D) Press release issued by ArvinMeritor, Inc. dated July 22, 2003, responding to Dana Corporation's rejection of the Offer.* (a)(5)(E) Text of ArvinMeritor, Inc. form of e-mail replies to investor inquiries and requests relating to the Offer.* (a)(5)(F) Press release issued by ArvinMeritor, Inc. dated July 28, 2003, discussing correspondence delivered to Dana Corporation's Committee of Independent Directors.* (a)(5)(G) Slides relating to the Offer used by ArvinMeritor, Inc. in a presentation dated August 7, 2003.* (a)(5)(H) Complaint filed by Dana Corporation on August 14, 2003 in the Court of Common Pleas of Lucas County, Ohio.* (a)(5)(I) Press release issued by ArvinMeritor, Inc. dated August 18, 2003, responding to Dana Corporation's complaint.* (a)(5)(J) Press release issued by ArvinMeritor, Inc. dated August 22, 2003, announcing its filing for HSR approval.* (a)(5)(K) Press release issued by ArvinMeritor, Inc. dated August 22, 2003, responding to Dana Corporation's answers and counterclaims to ArvinMeritor's complaints. (b) Not applicable. (c) Not applicable. (d) Not applicable. (e) Not applicable. (f) Not applicable. (g) Not applicable. (h) Not applicable. - ---------- * Previously filed (Exhibit attached)

Exhibit (a)(5)(K) [ARVINMERITOR(TM) LOGO] CONTACTS: MEDIA INQUIRIES Lin Cummins (248) 435-7112 linda.cummins@arvinmeritor.com INVESTOR INQUIRIES Alice McGuire (248) 655-2159 alice.mcguire@arvinmeritor.com ALTERNATE CONTACTS: Dan Katcher/Ellen Barry Joele Frank, Wilkinson Brimmer Katcher (212) 355-4449 FOR IMMEDIATE RELEASE ARVINMERITOR BELIEVES DANA COUNTERCLAIMS WITHOUT MERIT TROY, MICH., (Aug 22, 2003) - ArvinMeritor, Inc. (NYSE: ARM) today issued the following statement regarding the answer filed by Dana Corporation (NYSE: DCN) and its Board of Directors in response to ArvinMeritor's lawsuit that was filed on July 8, 2003 in the Circuit Court for the City of Buena Vista, Virginia, and the answer and counterclaims filed by Dana in response to ArvinMeritor's lawsuit that was filed on July 9, 2003 in the United States Federal District Court for the Western District of Virginia. "We believe Dana's counterclaims are without merit and we will contest them vigorously. Dana's Board of Directors and management continue to manufacture roadblocks to a combination of Dana and ArvinMeritor in an effort to further entrench themselves at Dana's shareowners' expense and to prevent shareowners from receiving substantial value for their investment in Dana."

- more - - 2 - ArvinMeritor, Inc. is a premier $7-billion global supplier of a broad range of integrated systems, modules and components to the motor vehicle industry. The company serves light vehicle, commercial truck, trailer and specialty original equipment manufacturers and related aftermarkets. In addition, ArvinMeritor is a leader in coil coating applications. The company is headquartered in Troy, MI, and employs 32,000 people at more than 150 manufacturing facilities in 27 countries. ArvinMeritor's common stock is traded on the New York Stock Exchange under the ticker symbol ARM. For more information, visit the company's Web site at: www.ArvinMeritor.com. # # # The solicitation and offer to purchase is made only pursuant to the Offer to Purchase and related materials that ArvinMeritor and Delta Acquisition Corp. filed with the Securities and Exchange Commission on July 9, 2003. Investors and security holders are advised to read such documents because they include important information. Investors and security holders may obtain a free copy of such documents at the SEC's website at www.sec.gov, from ArvinMeritor at 2135 W. Maple Road, Troy, MI 48084, Attn: Investor Relations, or by contacting Mackenzie Partners, Inc. at (212) 929-5500 collect or at (800) 322-2885 toll-free or by email at proxy@mackenziepartners.com.