The 13.56 Inch Cummins ISX Diesel Oxidation Catalysts are designed with a 13.27 Inch Diameter, making them a reliable and efficient choice for reducing exhaust emissions. Constructed with high-quality stainless steel, these catalysts offer durability and effectiveness. With reduced backpressure and fuel consumption, they provide practical benefits for Cummins ISX models. Each catalyst comes with clamps and gaskets included, ensuring a hassle-free installation. Manufactured according to OE technology and made to match OE performance, these catalysts are a direct replacement for the OE number 2880503. Trust in their high-quality construction and enjoy the benefits of improved emissions control.