LAKE FOREST, ILLINOIS, AUGUST 1, 2005 - Tenneco Automotive (NYSE: TEN) will participate in the JPMorgan Harbour Auto Conference to be held in Dearborn, Michigan, on Tuesday, August 2, 2005. Mark Frissora, the company's chairman and chief executive officer, will present at 1:40 p.m. EDT.

Tenneco Automotive's audio-only presentation will be webcast and can be accessed by going to the "Financial" portion of the company's web site at www.tenneco-automotive.com.

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 designers, manufacturers and marketers of emission control and ride control products and systems for the automotive original equipment market and the aftermarket. Tenneco Automotive markets its products principally under the Monroe®, Walker®, Gillet® and Clevite® Elastomer brand names. Among its products are Sensa-Trac® and Monroe Reflex® shocks and struts, Rancho® shock absorbers, Walker® Quiet-Flow® mufflers, Dynomax® performance exhaust products, and Clevite® Elastomer noise, vibration and harshness control components.

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

Tenneco Automotive, Investor Relations
Leslie Hunziker,
847/482-5042
leslie.hunziker@tenneco-automotive.com