The 13.44 Inch Cummins ISX Diesel Oxidation Catalysts with a 13.27 Inch Diameter are a reliable and efficient solution for reducing harmful exhaust emissions. With a stainless steel construction and manufactured according to OE technology, these catalysts are designed to match OE performance and fit most Cummins models. Sold individually, each catalyst comes with clamps and gaskets included for easy installation. Measuring 13.44 inches long, 13.27 inches wide, and 13.27 inches tall, these catalysts meet EPA10 exhaust emission norms and are direct OE replacements for numbers 5295365 and OTR58218.