The 13.39 Inch Cummins Diesel Oxidation Catalysts with a 13.27 Inch Diameter are a high-quality, environmentally friendly solution for reducing exhaust emissions. Constructed from stainless steel, these catalysts are durable and effective, providing a direct OE replacement for various Cummins makes and models. With reduced backpressure and fuel consumption, they are designed to meet EPA10 emission norms. Each unit comes with clamps and gaskets included, ensuring a hassle-free installation. Manufactured according to OE technology, these catalysts are made to match OE performance, making them a practical and reliable choice for diesel vehicle owners.