The 16.77 Inch Cummins Diesel Oxidation Catalysts with a 13.17 Inch Diameter are a high-quality product designed to reduce exhaust emissions and improve fuel efficiency. With a stainless steel construction and manufactured according to OE technology, these catalysts offer durability and effectiveness. They come with clamps and gaskets included for easy installation. Designed as a direct OE replacement, they fit most Cummins makes and models. With reduced backpressure and fuel consumption, these catalysts provide practical benefits for vehicle owners. Compatible with various OE replacement numbers, they offer a reliable solution for emission control.