Cash-Back Offer with Purchase of Walker Quiet-Flow® Mufflers or Exhaust Assemblies

MONROE, MICHIGAN, MAY 2, 2005 - Consumers who enhance the sound and performance of their vehicles' exhaust system with a Walker® Quiet-Flow® muffler or welded exhaust assembly in May will be eligible to receive a $40 cash rebate through the Walker® "Muffler Mania" promotion from Tenneco Automotive (NYSE: TEN).

Running May 1 through May 31, 2005, Walker Muffler Mania will help consumers afford important exhaust repairs before the summer driving season. The owners of domestic and import passenger cars, light trucks, vans and sport utility vehicles can take advantage of the $40 cash rebate by purchasing a premium Walker® Quiet-Flow®3 muffler or exhaust assembly from any participating dealer during the program period. Walker products are sold by leading North American parts stores and vehicle service providers.

"Most exhaust promotions benefit the installer more than the consumer, but Muffler Mania is clearly different," said Richard Alameddine, vice president of marketing, North American Aftermarket, for Tenneco Automotive. "This promotion enables consumers to achieve the sound and flow characteristics specified by the vehicle manufacturer while putting cash back into their pockets. Plus, they can be confident they're getting one of the best exhaust products available anywhere."

Each Walker® Quiet-Flow® muffler and exhaust assembly features the brand's exclusive "Sound Technology" advantage, which matches premium exhaust designs and ultra-durable materials to ensure exceptional reliability and OE-equivalent sound and flow. Exhaust flow can play a key role in determining overall engine performance and fuel efficiency.

Walker Quiet-Flow® mufflers and exhaust assemblies are covered by a free limited lifetime warranty and the brand's exclusive 90-day cash-back "Safe & Sound Guarantee," which reimburses consumers for the product's full purchase price plus labor if the qualifying unit does not meet their expectations. (Certain restrictions apply.)

For more information on the Walker brand's "Safe & Sound Guarantee" and to locate the nearest Walker exhaust dealer, please log on to www.walkerexhaust.com or call (734) 384-7830.

Tenneco Automotive is a $4.2 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 18,400 employees worldwide. Tenneco Automotive is one of the world's largest producers and marketers of ride control and exhaust systems and products, , which are sold under the Monroe® and Walker® global brand names. Among its products are Sensa-Trac® and Monroe Reflex® shocks and struts, Rancho® shock absorbers, Walker® Quiet-Flow® mufflers and Dynomax® performance exhaust products, and Monroe® Clevite® vibration control components.

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Christine Scalf
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Tenneco Automotive Media Relations
Jane Ostrander
(1) 847 482 5607
jane.ostrander@tenneco-automotive.com