Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.<br /><br /><b>Product Features:</b><ul><li type="disc">High grade stainless steel and copper construction</li><li type="disc">Meets or exceeds OEM standards</li><li type="disc">Consistent and precise response to cooling system needs</li><li type="disc">Original equipment design for worry-free direct fit replacement</li><li type="disc">100% tested and calibrated</li></ul>