Tenneco Clean Air is the emission control business of Tenneco Inc., supplying exhaust systems, catalytic converters, mufflers, and aftertreatment components to OEM and aftermarket customers globally. Brands include Walker, DynoMax, and Fonos. With revenues of approximately $4 billion, Tenneco Clean Air is one of the world's largest exhaust system suppliers. Products include diesel particulate filters (DPF), selective catalytic reduction (SCR) systems, gasoline particulate filters (GPF), and hot-end exhaust systems for light vehicles and commercial vehicles.
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