Equip your semi to be Ready for the Road Ahead™, with the Donaldson Spin-On Synthetic Coolant Filter, a crucial element that provides clean and efficient engine coolant. This replacement filter works to capture harmful contaminants and particles in the coolant before the particles cause damage to the engine. Engineered with an easy-to-install design that collects oil, dirt, debris, and other pollutants. FleetPride is your First Click in Heavy Duty®.