These 13-inch Cummins ISX Diesel Oxidation Catalysts are designed with a 13.25-inch diameter, making them a reliable and efficient choice for your diesel engine. With a stainless steel construction and manufactured according to OE technology, these catalysts are made to match OE performance. They are a practical and cost-effective solution, fitting most Cummins ISX models. Each catalyst comes with clamps and gaskets included, ensuring a hassle-free installation. With an exhaust emission norm of EPA10 and a direct OE replacement number of 2885912, these catalysts provide the benefits of improved emissions control and enhanced engine performance.