The 7.48 Inch Cummins ISC And ISL Diesel Oxidation Catalysts with an 11.67 Inch Diameter are designed to provide high durability and effectiveness in reducing exhaust emissions. Manufactured according to OE technology, these catalysts are made to match OE performance and fit most Cummins ISC and ISL models. With a stainless steel construction and included clamps and gaskets, these catalysts offer reduced backpressure and fuel consumption. They are direct OE replacements for numbers 4965284NX, 5287496NX, A035H295, 4965284, 5287496, 4965284RX, 5287496RX, and OTR0152002.