GM Genuine Parts Engine Coolant Thermostat Housings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These housings hold the thermostat and is a connection point for the radiator hose inlet or outlet, and may also include ports for sensors or switches. 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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• Repairs leaking thermostat housings
• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
• GM regularly updates production and service part designs to integrate new materials and technologies