The 10.8 Inch Cummins Diesel Oxidation Catalysts with an 11.7 Inch Diameter are designed for high durability and effectiveness, reducing backpressure and fuel consumption. Made of stainless steel, these catalysts are manufactured according to OE technology and are sold individually. They come with clamps and gaskets included and are designed to fit most Cummins makes and models. With a direct OE replacement number of 4353307, these catalysts meet EPA10 exhaust emission norms and are built to match OE performance, making them a practical and efficient choice for diesel engine maintenance.