Prepare your semi to be Ready for the Road Ahead™, with the Donaldson P578840 Spin-On Liquid Filter Kit that provides enhanced filter performance. To maintain oil, fuel, and lube filters so that each component can properly collect dirt, debris, and other contaminants, this replacement service kit includes a range of pieces. Fashioned with high-quality filtration accessories to efficiently collect contaminants and particles. FleetPride is your First Click in Heavy Duty®.