The 14.06 Inch Cummins ISX Diesel Oxidation Catalysts with a 10.31 Inch Diameter are designed for high durability and effectiveness, reducing backpressure and fuel consumption. Manufactured according to OE technology, these catalysts are made to match OE performance and fit most Cummins ISX models. With a stainless steel construction and exhaust emission norm of EPA07, these catalysts come with clamps and gaskets included, making them a practical and environmentally friendly choice. Direct OE replacement numbers include 4353305, 4353305RX, 5303019, 4353305NX, 4353305NX, and OTR58094.