Equip your semi to be Ready for the Road Ahead™, with the Fleetguard FF63041NN Spin-On Fuel Filter, a crucial element that works to clean fuel. To prevent contaminants from damaging the combustion chamber, this replacement filter works to separate dirt, grime, and other particles from clean fuel. Engineered with a unique design to offer best-in-class protection . FleetPride is your First Click in Heavy Duty®.