Engine Camshaft – GM (55508606)

Engine Camshaft is part of the mechanical drive inside the engine. Wear shows up as noise or lost lift before it becomes a hard failure.

Replace the Engine Camshaft when a visual inspection shows wear or heat marks, or when the corresponding bearing has failed. Debris from a failed bearing usually damages the surface it ran on.

Reference number for the Engine Camshaft: 55508606. It is filed under Camshafts & Timing, and it is the number that has to match the part coming off the vehicle.

This is GM dealer-sourced stock rather than an equivalent, so the number on the Engine Camshaft traces straight back to the manufacturer.