The 23.03 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 as a direct OE replacement, these catalysts fit most Cummins ISX models and are compatible with OE replacement numbers 2871496NX, 2888250NX, A030W859, 2871496, 2888250, 2871496RX, 2888250RX, and OTR0152019.