Our 10.25 Inch Cummins ISX Diesel Oxidation Catalysts with 13.15 Inch Diameter are designed to reduce backpressure and fuel consumption while meeting EPA07 exhaust emission norms. Made with high-quality stainless steel construction and manufactured according to OE technology, these catalysts are sold individually and come with clamps and gaskets included. With a focus on durability and effectiveness, they are made to match OE performance and provide practical benefits for your diesel engine. Choose our catalysts for a more environmentally friendly and efficient solution to your diesel emissions needs.