The 14.07 Inch Cummins Diesel Oxidation Catalysts with 11.74 Inch Diameter are a high-quality solution for reducing exhaust emissions in Cummins diesel engines. With a stainless steel construction and manufactured according to OE technology, these catalysts offer high durability and effectiveness. They are designed to fit most Cummins makes and models, making them a practical choice for engine maintenance. The catalysts come with clamps and gaskets included, ensuring easy installation. With reduced backpressure and fuel consumption, these catalysts not only help the environment but also improve engine performance. Direct OE replacement numbers include 4353289RX, 4387170, 5287368, 4353289, 4353289NX, and OTR58078.