Tenneco Automotive Third Quarter 2004 Earnings News Release and Conference Call Notice

LAKE FOREST, Ill., Oct. 5, 2004 -- Tenneco Automotive plans to issue its third quarter 2004 earnings news release before the market opens on Wednesday, October 20, 2004 and hold a conference call the same day at 10:30 am EDT. The purpose of the call is to discuss the company's results of operations for the last fiscal quarter, as well as other matters that may impact the company's outlook.

   News Release:    Before the market opens on Wednesday, October 20, 2004.
                    The news release will be sent by email and fax to the
                    Tenneco Automotive investor distribution list and will
                    be available on First Call, PRNewswire and the Tenneco
                    Automotive web site.

   Conference Call: Wednesday, October 20, 2004
                    The conference call will be hosted by Mark Frissora,
                    chairman and CEO and Ken Trammell, senior vice president
                    and chief financial officer.

   Time:            10:30 am Eastern time
                    9:30 am Central time

   Phone Numbers:   888-399-8606 (domestic)
                    517-308-9007 (international)

   Pass Code:       Tenneco Auto

   Conference       Leslie Hunziker
   Leader:

   Call Playback:   Available one hour following completion of the call on
                    Wednesday, October 20, 2004 through 5:00 p.m. EDT,
                    October 27, 2004.
                    Call 888-566-0635 (domestic) or
                    402-998-0730 (international)

   Web Site Broadcast: http://www.tenneco-automotive.com/
                    For a "listen only" broadcast, go to the company's web
                    site and select the "live web cast" link.  Please go to
                    the web site at least 15 minutes prior to the start of
                    the call to register and download and install any
                    necessary audio software.  A replay of this call will
                    also be available on the Tenneco Automotive web site.

Tenneco Automotive is a $3.8 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 19,200 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(R), Walker(R), Gillet(R) and Clevite(R)Elastomer brand names. Among its products are Sensa-Trac(R) and Monroe Reflex(R) shocks and struts, Rancho(R) shock absorbers, Walker(R) Quiet-Flow(R) mufflers, Dynomax(R) performance exhaust products, and Clevite(R)Elastomer noise, vibration and harshness control components.