This hydraulic filter element removes particulate contamination from the oil circulating in the hydraulic system before it reaches the high-pressure pump and downstream control valves. It mounts in the filter housing located in the return line of the hydraulic circuit. A clogged element forces the bypass valve open, allowing unfiltered oil to pass through and accelerate wear on pump pistons and valve spools. This original component is manufactured to the same media density and bypass-valve cracking pressure as the assembly it replaces, so the system maintains its designed filtration efficiency. Replace the housing seal on reinstallation and tighten the cap to the specified torque.