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Monitor coolant temperature during initial test drive to verify proper thermostat operation
and pre-chambers installed
Thermostat Opening Temperature: 82°C (180°F) - optimized for better cooling performance
This single electric-fan wiring harness features a 3/8" adjustable temperature sender
Variable Speed Electric Fan Controller Kit 5vz Monitor coolant temperature during initialThe Variable Speed Fan Controller includes everything you needsensor, relay, and wiringto fine tune cooling for high demand diesel swaps, hot rodded Toyotas, or performance engines. This thermostatic controller senses engine coolant temp (160240F adjustable range) via a threadin sending unit, automatically activating your electric fan(s) only when needed. It ensures ideal operating temps, reduces belt drag, and improves cooling system longevity.