Old fluid needs to be completely flushed-use clean new fluid. 1 1/16" Left inlet, 7/8" Top Inlet, 1 5/8" Right Inlet, 1 1/16" Right Discharge.Fits John Deere models 4320, 4520, 4620, 5440 Forage Harvester, 6404A Eng, 6404T Eng, 644 Indust/Const, 646 Compactor, 646B Compactor, 690 Excavator, 690A ExcavatorReplaces AR101807 This part is for for U.S. built equipment. If you have equipment that was built elswhere, please contact us and we will confirm the part will work for you.
