Ensure your semi is Ready for the Road Ahead™ with clean and efficient fuel, with the Donaldson DBB8666 Blue® Spin-On Fuel Filter. With a specialized design, this replacement filter works to capture and separate contaminants such as dirt and grime before they enter the combustion chamber. Built with a Synteq XP™ media composition that's up to four times cleaner than competing filters. FleetPride is your First Click in Heavy Duty®.