LAKE FOREST, ILLINOIS, JANUARY 20, 2006 - Tenneco (NYSE: TEN) today announced a change in the time of its fourth quarter 2005 earnings conference call and webcast on Thursday, January 26, 2006. The conference call will now begin at 2:00 p.m ET. Previously, the call was scheduled for 10:30a.m. ET.

Dial-in numbers for the call have not changed. For telephone access, please contact one of the following numbers at least 10 minutes prior to the scheduled start time using the passcode Tenneco. In the United States, dial 1-888-790-1408. For all other locations, dial +1-773-756-0157. A replay of the call will be available until February 26, 2006. To access the replay, dial 1-866-356-3371 in the United States or +1-203-369-0098 from other locations.

For a "listen only" broadcast, go to the company's website (www.tenneco.com) and select the "live web cast" link. Please go to the website 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 be available on the Tenneco web site through February 26, 2006. Accompanying slides will also be available on the financial section of the Tenneco website at www.tenneco.com.

Tenneco is a $4.2 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 18,400 employees worldwide. Tenneco 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 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 Media Relations
Jane Ostrander
(1) 847 482 5607
jostrander@tenneco.com

Tenneco Investor Relations
Leslie Hunziker
(1) 847 482 5042
lhunziker@tenneco.com

LAKE FOREST, ILLINOIS, JANUARY 20, 2006 - Tenneco (NYSE: TEN) today announced a change in the time of its fourth quarter 2005 earnings conference call and webcast on Thursday, January 26, 2006. The conference call will now begin at 2:00 p.m ET. Previously, the call was scheduled for 10:30a.m. ET.

Dial-in numbers for the call have not changed. For telephone access, please contact one of the following numbers at least 10 minutes prior to the scheduled start time using the passcode Tenneco. In the United States, dial 1-888-790-1408. For all other locations, dial +1-773-756-0157. A replay of the call will be available until February 26, 2006. To access the replay, dial 1-866-356-3371 in the United States or +1-203-369-0098 from other locations.

For a "listen only" broadcast, go to the company's website (www.tenneco.com) and select the "live web cast" link. Please go to the website 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 be available on the Tenneco web site through February 26, 2006. Accompanying slides will also be available on the financial section of the Tenneco website at www.tenneco.com.

Tenneco is a $4.2 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 18,400 employees worldwide. Tenneco 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 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 Media Relations
Jane Ostrander
(1) 847 482 5607
jostrander@tenneco.com

Tenneco Investor Relations
Leslie Hunziker
(1) 847 482 5042
lhunziker@tenneco.com

LAKE FOREST, ILLINOIS, JANUARY 20, 2006 - Tenneco (NYSE: TEN) today announced a change in the time of its fourth quarter 2005 earnings conference call and webcast on Thursday, January 26, 2006. The conference call will now begin at 2:00 p.m ET. Previously, the call was scheduled for 10:30a.m. ET.

Dial-in numbers for the call have not changed. For telephone access, please contact one of the following numbers at least 10 minutes prior to the scheduled start time using the passcode Tenneco. In the United States, dial 1-888-790-1408. For all other locations, dial +1-773-756-0157. A replay of the call will be available until February 26, 2006. To access the replay, dial 1-866-356-3371 in the United States or +1-203-369-0098 from other locations.

For a "listen only" broadcast, go to the company's website (www.tenneco.com) and select the "live web cast" link. Please go to the website 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 be available on the Tenneco web site through February 26, 2006. Accompanying slides will also be available on the financial section of the Tenneco website at www.tenneco.com.

Tenneco is a $4.2 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 18,400 employees worldwide. Tenneco 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 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 Media Relations
Jane Ostrander
(1) 847 482 5607
jostrander@tenneco.com

Tenneco Investor Relations
Leslie Hunziker
(1) 847 482 5042
lhunziker@tenneco.com

LAKE FOREST, ILLINOIS, JANUARY 20, 2006 - Tenneco (NYSE: TEN) today announced a change in the time of its fourth quarter 2005 earnings conference call and webcast on Thursday, January 26, 2006. The conference call will now begin at 2:00 p.m ET. Previously, the call was scheduled for 10:30a.m. ET.

Dial-in numbers for the call have not changed. For telephone access, please contact one of the following numbers at least 10 minutes prior to the scheduled start time using the passcode Tenneco. In the United States, dial 1-888-790-1408. For all other locations, dial +1-773-756-0157. A replay of the call will be available until February 26, 2006. To access the replay, dial 1-866-356-3371 in the United States or +1-203-369-0098 from other locations.

For a "listen only" broadcast, go to the company's website (www.tenneco.com) and select the "live web cast" link. Please go to the website 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 be available on the Tenneco web site through February 26, 2006. Accompanying slides will also be available on the financial section of the Tenneco website at www.tenneco.com.

Tenneco is a $4.2 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 18,400 employees worldwide. Tenneco 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 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 Media Relations
Jane Ostrander
(1) 847 482 5607
jostrander@tenneco.com

Tenneco Investor Relations
Leslie Hunziker
(1) 847 482 5042
lhunziker@tenneco.com

LAKE FOREST, ILLINOIS, JANUARY 20, 2006 - Tenneco (NYSE: TEN) today announced a change in the time of its fourth quarter 2005 earnings conference call and webcast on Thursday, January 26, 2006. The conference call will now begin at 2:00 p.m ET. Previously, the call was scheduled for 10:30a.m. ET.

Dial-in numbers for the call have not changed. For telephone access, please contact one of the following numbers at least 10 minutes prior to the scheduled start time using the passcode Tenneco. In the United States, dial 1-888-790-1408. For all other locations, dial +1-773-756-0157. A replay of the call will be available until February 26, 2006. To access the replay, dial 1-866-356-3371 in the United States or +1-203-369-0098 from other locations.

For a "listen only" broadcast, go to the company's website (www.tenneco.com) and select the "live web cast" link. Please go to the website 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 be available on the Tenneco web site through February 26, 2006. Accompanying slides will also be available on the financial section of the Tenneco website at www.tenneco.com.

Tenneco is a $4.2 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 18,400 employees worldwide. Tenneco 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 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 Media Relations
Jane Ostrander
(1) 847 482 5607
jostrander@tenneco.com

Tenneco Investor Relations
Leslie Hunziker
(1) 847 482 5042
lhunziker@tenneco.com