The Donaldson 5" x 3" HMK05/25 Series 25 psi Aluminum Head Assembly is designed to provide reliable protection for your equipment in any environment. This assembly is made from high-quality materials that can withstand high pressures and temperatures. The aluminum head is precisely aligned and fitted together in order to function properly. It is finished with a corrosion-resistant coating to ensure it can withstand the harsh environments it may be exposed to. This assembly is designed to provide reliable protection and performance for your equipment. FleetPride is your First Click in Heavy Duty®.