Terex (TEX) 10-Q 2008 Q3 Quarterly report

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Terex Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2008 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Ronald M. DeFeo, Chairman and Chief Executive Officer of the Company, and Phillip C. Widman, Senior Vice President and Chief Financial Officer of the Company, certify, to the best of our knowledge, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Ronald M. DeFeo

Ronald M. DeFeo

Chairman and

Chief Executive Officer

November 3, 2008

/s/ Phillip C. Widman

Phillip C. Widman

Senior Vice President and

Chief Financial Officer

November 3, 2008

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Terex Corporation and will be retained by Terex Corporation and furnished to the Securities and Exchange Commission or its staff upon request.