QSB4.5 Cummins Wear Sleeve Kit Rear Seal 3926126 Parts Catalog Ref No. Part Name Part No. Required Engine Crankshaft 4891470 1 1 Crankshaft Gear 4892438 1 2 Shaft Collar 4891379 1 3 Engine Crankshaft 4891471 1 4 Crankshaft Gear 4891233 1 Main Bearing (Standard) Set 4025224 1 5 Crankshaft Thrust Bearing 3945528 1 6 Crankshaft Thrust Bearing 3927772 1 …