To perform an injector replacement on your 6.7L Cummins, it takes more than just a new set of injectors. BD Diesel has developed a kit that includes everything you could possibly need to perform an injector replacement with new lines, valve cover gasket with wiring, Bosch connector tubes, and intake manifold gasket. Replacing the connector tubes is especially important when installing new injectors due to the way the tube seals itself to the injector body. Re-using connector tubes can result in a leak forming between the connector tube and the injector body. The BD OEM fit fuel lines eliminate the chance of old corroded lines injecting contaminates into your new injectors causing performance and reliability issues. Over time and many heat cycles, the factory injector wiring can become brittle and create high resistance causing the injectors to not fire properly. This kit remedies this by including a new wiring harness built into the valve cover gasket. Replace your injectors like a pro with the BD Power Injector Install Kit.