QSK50 Cummins Lubricating Oil Pump Gear 3627834 Parts Catalog Ref No. Part Name Part No. Required Lubricating Oil Pump BP6122-03 Lube Oil Pump Lubricating Oil Pump 3634648 1 1 Lock Washer S604 4 2 Lock Washer S610 10 3 Hexagon Head Cap Screw 197032 10 4 Twelve Point Cap Screw 199919 2 5 Twelve Point Cap Screw 205377 …