Upgrade your 5.9 Cummins fuel system with the Cummins 3939258 Mechanical Fuel Transfer Lift Pump Gasket. Engineered as a direct-fit replacement for 1989-1998 models, this gasket is crafted from high-quality materials to ensure a leak-free seal and maintain factory performance. Trust in Cummins for a reliable and durable solution that meets OEM standards, so you can keep your engine running smoothly and efficiently.