Wabash National Corporation Announces Earnings Release Date

LAFAYETTE, Ind.--April 8, 2005--Wabash National Corporation today announced it will conduct a conference call to review and discuss its year end financial results on Thursday, April 21, 2005, at 10:00 a.m. Eastern time. Wabash National is scheduled to release its results on Wednesday, April 20, 2005, after the close of the financial markets.

The phone number to access the conference call is 877-407-8035. The call can also be accessed live on the Company's Internet website at www.wabashnational.com. For those unable to participate in the live webcast, the call will be archived at www.wabashnational.com within three hours of the conclusion of the live call and will remain available through May 1, 20052, 2005.

Wabash National Corporation designs, manufactures, and markets standard and customized truck trailers under the Wabash(R) brand name. The Company is one of the world's largest manufacturers of truck trailers and a leading manufacturer of composite trailers. The Company's wholly owned subsidiary, Wabash National Trailer Centers, is one of the leading retail distributors of new and used trailers and aftermarket parts throughout the U.S. and Canada.