Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 12559807 Thermostat,Engine Coolant. It is sometimes referred to as Buick Thermostat. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific Buick Lucerne models.
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