ACDelco GM Original Equipment Engine Coolant Reservoir Caps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. This cap helps keep coolant from flowing out of your vehicle's engine coolant recovery tank. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.

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• Helps keep coolant from flowing out of your vehicle's engine coolant recovery tank
• Helps keep coolant pressure at required level
• Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
• ACDelco GM Original Equipment 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