Tenneco Inc. designs, manufactures, and sells emission control and ride control products and systems for light, commercial, and specialty vehicle applications worldwide. The company offers emission control systems, such as catalytic converters and diesel oxidation catalysts to reduce harmful gaseous emissions; diesel particulate filters to eliminate particulate matter emitted from diesel engines; burner systems, which combust fuel and air inside the exhaust system; and hydrocarbon vaporizers and injectors. It also provides lean nitrogen oxide traps, selective catalytic reduction systems, and alternative NOx reduction technologies that reduce nitrogen oxide emissions from diesel power trains; mufflers and resonators to provide noise elimination and acoustic tuning; exhaust manifolds that collect gases from individual cylinders of a vehicle’s engine and direct them into a single exhaust pipe; pipes to connect various parts of hot and cold ends of an exhaust system; hydro formed assemblies; hangers and isolators used for system installation and elimination of noise and vibration; and after treatment control units. In addition, the company offers ride control systems comprising shock absorbers, struts, vibration control components, a suite of roll-control and nearly equal wheel-loading systems, and advanced suspension systems, as well as other ride control products, including load assist products, springs, steering stabilizers, suspension kits, and modular assemblies. The company provides its products under the Monroe, Rancho, Clevite Elastomers, Marzocchi, Axios, Kinetic, Fric-Rot, Walker, Fonos, DynoMax, Thrush, and Lukey brands. It serves original equipment manufacturers, and repair and replacement markets. The company was formerly known as Tenneco Automotive Inc. and changed its name to Tenneco Inc. in 2005. Tenneco Inc. was founded in 1987 and is headquartered in Lake Forest, Illinois.

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