Wabash National (WNC) 8-K Results of Operations and Financial Condition

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

Walker Group Holdings, LLC

New Lisbon, Wisconsin

We hereby consent to the incorporation by reference in the Registration Statements on Forms S-3 (Nos. 333-173150 and 333-168944) and Forms S-8 (Nos.333-54714, 333-115682, 333-113157, and 333-149349) of Wabash National Corporation of our report dated March 9, 2012, relating to the consolidated financial statements of Walker Group Holdings, LLC, which appears in this Form 8-K.

/s/ BDO USA, LLP

Milwaukee, Wisconsin

April 13, 2012