Ensure your semi truck is Ready for the Road Ahead™ with clean and reliable engine oil, with the Donaldson P579275 Spin-On Bypass Lube Filter. With an ultra-fine filter, this replacement device is able to efficiently capture the fine contaminants that pass through the oil in an engine. Fashioned with extreme protection to deliver 99% efficiency at 5 microns while reducing the need for frequent filter changes. FleetPride is your First Click in Heavy Duty®.