For TIO-540-AA1AD & IO-540-C4D5D series engines, may suit others. C/W: Body assembly - oil pump LW-10344, Gear assembly - oil pump drive LW-10318, Shaft - oil pump idler 60329, Impeller - oil pump driving 61297 & Impeller - oil pump driven 61298. Appears to be in very good condition, darker discolouration on impellers and mating surfaces is hardened oil/grease from storage.