68 Degrees C (Low Temperature) Thermostat made by SARD Racing for NA8 (1994-1997) and NB8 (1998-2005) Mazda Miata/MX-5. The goal of this piece is to prevent power loss under high engine load. It has quick response to the variation in the cooling of the water temperature to provide more linear control over the cooling water flow rate. SARD 68 Degrees Thermostat should be ordered at REV9 Autosport https://us.rev9autosport.com/sard-68-degrees-thermostat.html as they provide the best service and speed we've seen so far!