Tenneco Inc. (ticker: TEN, exchange: New York Stock Exchange) News Release

October 29, 2007

Company will develop innovative ELIM-NOx SCR system for Chinese engine manufacturer

Lake Forest, Illinois, October 29, 2007 – Tenneco Inc. (NYSE: TEN) announced today it has been awarded its first development contract for a completely integrated selective catalyst reduction (SCR) diesel aftertreatment system featuring its recently acquired ELIM-NOx™ technology. The development contract is between Tenneco’s venture in Shanghai and a major Chinese commercial vehicle engine manufacturer.

The ELIM-NOx™ system is designed to reduce Nitrogen Oxides (NOx) emissions by 70 to 90 percent using current SCR technology. SCR is the process of removing NOx through a chemical reaction and is a leading technology for helping diesel engine and vehicle manufacturers meet the NOx emissions standards.

Tenneco will work with the Chinese engine manufacturer to develop a complete SCR system with the ELIM-NOx injector system for truck and bus engines currently scheduled to launch in China in 2011.

"We are proud to showcase our innovative ELIM-NOx™ technology in the growing Chinese commercial vehicle market, an area of significant opportunity for us," said Gregg Sherrill, Tenneco Chairman and CEO. "We are well-positioned with our advanced hot-end emission control technologies and diesel aftertreatment capabilities to help engine manufacturers and OEMs worldwide meet increasingly stringent emissions standards. We look forward to supporting our newest customer to meet the upcoming Euro-4 regulations in China."

ELIM-NOx is one of the few proven high-performance systems for urea and hydrocarbon injection. The ELIM-NOx™ injector system and "self-learn" monitoring device are unique. The injector system is capable of providing rapid, uniform dispersion of urea without the use of steam or compressed air, reducing overall system lifecycle cost. The "self-learn" monitoring device significantly reduces vehicle development time and costs with the use of sensors to measure NOx, exhaust temperature and other engine parameters.

Tenneco is currently the largest emissions control supplier to automotive original equipment manufacturers in China. The company operates five majority-owned joint ventures in China including emission control operations in Shanghai, Dalian (two joint ventures with JIT facilities in Changchun) and Chongqing. Volkswagen (SVW), General Motors (SGM), Chery, Brilliance, PSA (DPCA), Daimler Chrysler (Beijing Jeep), Suzuki, Nissan, Audi (FAW-VW) and Ford are among the company’s OE customers in China.

About TennecoTenneco is a $4.7 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 19,000 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.

This press release contains forward-looking statements regarding the development contract. Words such as "will" and similar expressions identify forward-looking statements. These forward-looking statements are based on Tenneco’s current expectations. Because these forward-looking statements involve risks and uncertainties, Tenneco’s plans, actions and actual results could differ materially. Among the factors that could cause these plans, actions and results to differ materially from current expectations are Tenneco’s ability to develop and profitably commercialize new products and technologies and the acceptance of such new products and technologies by Tenneco’s customers and the market. Tenneco cannot guarantee if or when it will realize revenue under the development contract. Tenneco undertakes no obligation to update any forward-looking statement to reflect events or circumstances after the date of this press release. Additional information regarding these risk factors and uncertainties is detailed from time to time in Tenneco’s SEC filings, including but not limited to its report on Form 10-K/A for the year ended December 31, 2006. Further information can be found on Tenneco’s web site at www.tenneco.com.

Tenneco Media Relations
Jane Ostrander
(1) 847 482 5607

Tenneco Investor Relations
Leslie Hunziker
(1) 847 482 5042