The crankshaft is an important part of the engine. Its material is made of carbon structural steel or ductile iron. It has two important parts: main journal, connecting rod neck, (and others). QSC8.3 Crankshaft is for Cummins C Series 6 Cylinder electronic engines. If you have to replace the crankshaft, then you will need to replace the parts below:
Main Bearing Set (Upper Bearing , Lower Bearing & Thrust Bearing)
Connecting Rod Bearing Set (Upper and Lower Bearsings)
Upper Gasket Kit
Lower Gasket Kit
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