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

LAKE FOREST, Ill., April 5 -- Tenneco Automotive plans to issue its first quarter 2004 earnings news release before the market opens on Tuesday, April 20, 2004, and hold a conference call the same day at 10:30 a.m. 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 Tuesday, April 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:    Tuesday, April 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 a.m. Eastern time
                      9:30 a.m. Central time

  Phone Numbers:      888 730-9138 (domestic)
                      630 395-0019 (international)

  Passcode:           Tenneco Auto

  Conference Leader:  Leslie Hunziker

  Call Playback:      Available one hour following completion of the call
                      on Tuesday, April 20, 2004 through 5:00 p.m. CDT,
                      April 27, 2004.  Call 888 568-0399 (domestic) or
                      402 530-7938 (international).

  Web Site Broadcast: 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.