The 13.64 Inch Cummins Diesel Oxidation Catalysts with a 13.15 Inch Diameter are designed to provide high durability and effectiveness in reducing exhaust emissions. With a stainless steel construction, these catalysts offer reduced backpressure and fuel consumption. Each catalyst comes with clamps and gaskets included, making installation hassle-free. Manufactured according to OE technology, these catalysts are made to match OE performance and fit most Cummins makes and models. With direct OE replacement numbers, including 1912726, 1949999, and 5298350, these catalysts offer practicality and reliability for your diesel engine needs.