GM Genuine Parts Engine Coolant Reservoir Housing Covers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These housings cover your vehicle's thermostat and are a main path for coolant flow. 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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• Covers and secures your GM vehicle's thermostat
• 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

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