Old fluid needs to be completely flushed-use clean new fluid. 1 1/16" Top Inlet, 1 1/16" Right Inlet, 3/4" Right Discharge. Keyed input shaft.Fits John Deere models 4010, 4020, 6404D EngReplaces AR103033 AR103036 AR39168 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.
