GM Genuine Parts Engine Variable Valve Timing (VVT) Adjusters are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These adjusters are responsible for the flow of oil through the VVT system. They change the flow of oil depending on the stress of the engine. 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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• Allows vehicles to efficiently tow heavy loads
• Adapts the flow of oil through the VVT system
• 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