The 16.65 Inch Cummins ISX Diesel Oxidation Catalysts with a 13.15 Inch Diameter are a practical and effective solution for reducing exhaust emissions. Made with stainless steel construction and manufactured according to OE technology, these catalysts offer high durability and effectiveness. With reduced backpressure and fuel consumption, they provide improved performance and efficiency. Each catalyst comes with clamps and gaskets included, making installation hassle-free. Available for various OE replacement numbers, these catalysts are designed to fit most Cummins ISX models. Choose the best DPF for your application and enjoy the benefits of this reliable and efficient product.