Crankshaft gear for Cummins 6BTAA5.9-C178

The crankshaft gear, part number 3084445, acts as a mechanical interface within the Cummins internal combustion engine. Its primary function is to transfer rotational motion from the crankshaft to auxiliary engine components, such as the camshaft, oil pump, or fuel injection pump, typically via a gear train or timing chain assembly. This component ensures the precise synchronization of valve timing and fuel delivery cycles necessary for engine operation.

This gear is compatible with several Cummins engine models, including the 6BTAA5.9-C178, KTA38C-1050, QSM11-C335, and QSM19-C700. These engines are commonly found in heavy machinery, including industrial cranes, mining equipment, and construction vehicles. The gear is engineered to maintain the specific tooth profile and diameter required for a secure fitment onto the crankshaft, facilitating the transfer of torque between engine assemblies.

In heavy-duty engine applications, the crankshaft gear is a fundamental element of the timing system. By maintaining the correct rotational relationship between the crankshaft and the driven components, it allows the engine to maintain its timing sequence. Proper installation and alignment of this gear are necessary to prevent timing drift and ensure the mechanical integrity of the engine's internal drive system.