Piston pin for Cummins 6BTAA5.9-C178

The piston pin, part number 4931041, serves as the mechanical link between the piston and the connecting rod in an internal combustion engine. By securing these two components together, it facilitates the transfer of force from the piston to the connecting rod, which subsequently converts the reciprocating linear motion into the rotational movement required by the crankshaft. This component must maintain structural integrity while subjected to significant compressive loads and inertial forces during every engine cycle.

This part is designed for use in various Cummins engine models, including the 6BTAA5.9-C178, KTA38C-1050, QSM11-C335, and QSM19-C700. It is manufactured to meet the specific fitment requirements of these engine series to ensure proper alignment within the piston-rod assembly.

In heavy machinery engines, the piston pin operates within the piston bosses and the small end of the connecting rod. It allows for the necessary articulation between these parts as the piston moves through the cylinder. Precise fitment and surface finish are required to manage the friction and load distribution between the pin, the rod bushing, and the piston pin bores during operation.