The eccentric on a camshaft that acts on lifters or followers in turn, other valvetrain components as the camshaft is rotated, to open the intake exhaust valves.
The large in the connecting rod that connects to the drive shaft.
Spring steel rod wound into a coil that supports the vehicles weight while allowing suspension movement.
In mechanical terms, wear of a component that exceeds designed limits; wear causes by overloading a part that is in an out-of-balance condition, resulting in lower-than-normal life expectancy of the part being subjected to the adverse operating condition.