Ensure your semi is Ready for the Road Ahead™ with clean and efficient engine coolant, with the Donaldson BLUE® Spin-on Synthetic Coolant Filter. Thanks to its specialized filter, this replacement component is able to capture harmful contaminants in the coolant before the particles cause damage to the engine. Crafted with an easy-to-install design that collects oil, dirt, debris, and other pollutants. FleetPride is your First Click in Heavy Duty®.