The 17.40 Inch Cummins Diesel Oxidation Catalysts with 9.62 Inch Diameter are a high-quality, durable, and effective solution for reducing backpressure and fuel consumption in your vehicle. With a stainless steel construction and a wide range of compatible Cummins makes and models, these catalysts are manufactured according to OE technology and made to match OE performance. Each unit comes with clamps and gaskets included, making installation a breeze. With direct OE replacement numbers and EPA07 exhaust emission norm compliance, these catalysts offer practical and reliable benefits for your vehicle's exhaust system.