Engine Timing Chain

Synchronizes the rotation of the crankshaft and the camshaft(s) to help ensure that the engine's valves open and close at the proper time during each cylinder's intake and exhaust strokes Manufactured to GM OE specification for fit, form, and function

Engine Variable Valve Timing (Vvt) Oil Control Valve

Sierra, silverado. Express, savana. Coated to help protect against premature corrosion

Engine Camshaft Bearing