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4B3.9
The crankshaft has sufficient strength and rigidity, and the surface of the journal needs to be wear-resistant, work uniformly, and have good balance.
4B3.9 Crankshaft is for Cummins B Series 4 Cylinder mechanical engines. When you have to replace the engine crankshaft, then you will have 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
The crankshaft has sufficient strength and rigidity, and the surface of the journal needs to be wear-resistant, work uniformly, and have good balance.
4B3.9 Crankshaft is for Cummins B Series 4 Cylinder mechanical engines. When you have to replace the engine crankshaft, then you will have 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
