The Donaldson 5.35" Synthetic Spin-On Coolant Filter is designed to provide superior filtration performance and extended service life. The filter features a synthetic media that is designed to capture and hold particles down to 14 microns in size at a 99% efficient rate, helping to keep your coolant system free of contaminants. The filter also features a spin-on design for easy installation and removal, and a durable construction that is designed to withstand the toughest conditions. With this coolant filters, you can be sure that your coolant system is protected from contamination and running at peak efficiency. FleetPride is your First Click in Heavy Duty®.