Improved Racing Flow Series Extreme -16AN Engine Oil Cooler Thermostat, 185°F

Improved Racing's Flow Series Extreme (FSX) thermostat is built for large diesel engine and transmission applications, flowing up to 33 GPM (125 LPM) of oil and up to 50 GPM (189 LPM) of water.

Key Features

• 185°F temperature rating
• Patented high-flow design with no valves, springs, or other obstructions in the primary oil flow
• Maintains a minimum fluid temperature in most conditions
• -16AN female O-ring boss ports, with optional adapter fittings in various sizes
• Made in the USA