GM Genuine Parts Engine Camshafts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These camshafts rotate in relation with the crankshaft in order to open and close the intake and exhaust valves in sync with the piston 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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• Rotates in relation with crankshaft to open and close intake and exhaust valves at appropriate times with piston strokes
• Lobes on camshaft determine when and how long the valves remain open
• Allows intake valves to open to receive air into cylinder
• Allows exhaust valves to open to release exhaust gases
• 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