GM Genuine Parts Engine Timing Chains are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These chains synchronize the rotation of the crankshaft and camshaft(s) in an internal combustion engine. They help ensure that the engine's valves open and close at the proper time during each cylinder's intake and exhaust strokes. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

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• 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
• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
• GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• GM regularly updates production and service part designs to integrate new materials and technologies