Tenneco is a global automotive parts manufacturer headquartered in Lake Forest, Illinois. The company specializes in designing and producing products for vehicle emissions control, ride performance, and aftermarket solutions. Tenneco operates in two main segments: Clean Air and Ride Performance, serving both original equipment manufacturers (OEMs) and the aftermarket. Founded in 1960, Tenneco has grown through various acquisitions and innovations in the automotive industry. The company is committed to sustainability and reducing environmental impact through its advanced technologies. Tenneco's products are used in a wide range of vehicles, including cars, trucks, and commercial vehicles.