The Injector O-ring & Copper Washers Kit is a high-quality replacement kit for 2003 - 2013 5.9L and 6.7L Dodge Cummins engines. It is a cost-effective solution for replacing your injector o-rings and ensuring that they are installed correctly. This kit is easy to use and the o-rings are made of viton, a durable material used in diesel engine applications. With a one year unlimited mileage warranty, you can trust that it's built to last. Keep your engine running smoothly and efficiently with the Injector O-ring & Copper Washers Kit for 2003 - 2013 5.9L 6.7L Dodge Cummins.