SUGGESGIVE JN Copper Injector Washers are engineered for diesel engine enthusiasts and mechanics seeking reliable performance. Crafted from premium copper alloy, these washers provide exceptional thermal conductivity and resistance to high-pressure environments. The included heat shields and tip gaskets ensure a secure seal, preventing fuel leaks and extending engine life. Compatible with 6.9L, 7.3L, and 5.9L diesel engines (including For d Powerstroke models), this kit offers a precise OEM fit for hassle-free installation. Each pack contains 8 washers, sufficient for a full set of replacements. Trust SUGGESGIVE JN for durability backed by precision engineering.