QSB4.5 Cummins Bushing 4944137 Parts Catalog Ref No. Part Name Part No. Required 　 Injector 3926118 1 　 Hexagon Flange Head Cap Screw 3902112 6 　 Injector Seal 3909886 6 　 Injector Clamp 3910279 6 　 Injector 3926120 6 　 Camshaft 3935715 1 　 Hexagon Head Cap Screw 3900227 2 　 Plain Woodruff Key 3902332 1 　 Camshaft Gear 3918777 …