The Fleetguard 5.40" Spin-On Water Filter is designed to provide superior filtration and protection for your engine's cooling system. This filter is designed to reduce wear and maintain effective heat transfer in the cooling system, while also providing a convenient and reliable method for delivering supplemental coolant extenders into the cooling system. This filter is designed to provide superior filtration and protection for your engine's cooling system, while also helping to improve performance and extend coolant service life. FleetPride is your First Click in Heavy Duty®.