Electronic engines require a thermostat.

Only Arctic Fox give you a choice – Shut-Off Thermostat or Bypass Thermostat.

• The Arctic Fox "Series 400" shut-off thermostat stops the coolant flow when the fuel flowing through it reaches approximately 78° F/ 25° C to 95° F/35° C.
• The "Series 440" shut-off thermostat operates at a range of approximately 104° F/40° C to 125° F/52° C.
• Helps keep the fuel within the recommended temperature limits for maximum horsepower as suggested by engine manufacturers.
• With the shut-off thermostat you can convert your existing or any coolant type warmer into a thermostatically controlled fuel warmer.
• Utilizes proven sensor module technology used in engine coolant applications.