The Donaldson 5.35" Spin-On Coolant Filter is designed to provide superior protection for your coolant system. This filter is constructed with rugged materials and a durable design to ensure it can withstand extreme temperatures and conditions. It contains enough additive to initially charge the cooling system and reach the first service interval. The product range allows you to choose the filtration method that best suits your maintenance practices and schedules. With this coolant filter, you can be sure that your coolant system is protected from contamination and other potential damage. FleetPride is your First Click in Heavy Duty®.