The 12.8 Inch Cummins ISX Diesel Oxidation Catalysts with a 13.17 Inch Diameter are a high-quality solution for reducing exhaust emissions in Cummins ISX models. Manufactured according to OE technology, these catalysts offer high durability and effectiveness, ensuring reduced backpressure and fuel consumption. With a stainless steel construction, they are built to last. Each catalyst comes with clamps and gaskets included, making installation hassle-free. Designed to match OE performance, these catalysts are a direct replacement for OE numbers 2880506NX, 2880506, 2880506RX, and OTR0152015. Improve your vehicle's environmental impact with these reliable and practical catalysts.