Tenneco Inc. is a global enterprise that specializes in the research, development, manufacturing, and distribution of sophisticated clean air and powertrain systems and components. Its extensive customer base includes manufacturers of light vehicles, commercial trucks, and off-highway machinery, as well as industrial sectors, motorsport outfits, and the worldwide automotive aftermarket. The company's operations are divided into four primary business units: Motorparts, Performance Solutions, Clean Air, and Powertrain.