Speed Unlimited #3101 Fan Control, Thermostatic, 200 Degrees On/185 Degrees Off, 3/8 in. NPT Sending Unit, Kit. This Speed Unlimited kit comes with a threaded thermostat that screws into the engine block or intake manifold for a professional looking installation. This is inexpensive protection for an electric fan and a vehicle's wire harness. Provides constant voltage, protects from voltage and amperage spikes and prevents the fan from back feeding voltage through the vehicle's wire harness. This inexpensive kit includes a 30/40 amp relay, a circuit breaker, 3/8 in. NPT thermostatic switch, 1/2 in. NPT to 3/8 in. NPT adapter, relay base with harness, crimp-on terminals, and mounting hardware.
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