The 7.54 Inch Cummins ISB Diesel Oxidation Catalysts with a 9.39 Inch Diameter are designed to provide high durability and effectiveness in reducing exhaust emissions. With a stainless steel construction, these catalysts offer reduced backpressure and fuel consumption. Each catalyst comes with clamps and gaskets included, making installation hassle-free. Manufactured according to OE technology, these catalysts are made to match OE performance. They fit most Cummins ISB makes and models and can be used as direct OE replacements. With their impressive features and compatibility, these catalysts are a practical choice for improving your vehicle's emissions.