The 16.77 Inch Cummins ISX Diesel Oxidation Catalysts with a 13.17 Inch Diameter are a high-quality, environmentally friendly solution for reducing harmful exhaust emissions. Constructed from stainless steel, these catalysts are designed for durability and effectiveness, providing a direct OE replacement for Cummins ISX models. With reduced backpressure and fuel consumption, they are a practical and efficient choice for improving engine performance. Each catalyst comes with clamps and gaskets included, and is manufactured according to OE technology, ensuring a perfect fit and match to OE performance standards. This product meets EPA07 exhaust emission norms and is sold individually, making it a convenient and reliable option for maintaining and improving your vehicle's environmental impact.