This hydraulic oil filter removes particulate contamination from the hydraulic circuit before the fluid reaches the pump and control valves. It is installed in the filter housing on the pressure or return side of the system, depending on the specific tractor configuration. A clogged filter element forces the bypass valve open, allowing unfiltered fluid to circulate and accelerating wear on pump pistons and spool valves. Mann-Filter manufactures this element to match the original housing's seal geometry and bypass-valve cracking pressure, so the filtration rating and flow capacity are preserved as designed. On replacement, clean the housing interior and verify the new seal seats fully before torquing the cover.