The Cummins 3918188 8mm Fuel System Sealing Washer is a premium, direct-fit replacement designed for the 5.9 Cummins engine. Crafted from high-quality materials, this washer ensures a secure seal to maintain optimal fuel system performance and factory specifications. Engineered for durability and reliability, it helps prevent fuel leaks and protects your engine's efficiency. Backed by the trusted Cummins brand, you can depend on this sealing washer to provide long-lasting performance and a perfect fit. Ideal for those looking to maintain or restore their fuel system’s integrity with a genuine OEM solution.