The Donaldson 3.39" Spin-On Full Flow Lube Filter is designed to provide maximum engine protection and reduce operating costs. This filter features a double the contaminant carrying capacity of standard cellulose filters for much longer life. The filter also has a lower restriction to provide maximum oil flow and lubrication. With this filter, you can be sure that your engine is protected and running at its best. FleetPride is your First Click in Heavy Duty®.