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Thermal Radiator Cooling Fan Switches & Controllers

Take control of your electric fan with one of our adjustable or non-adjustable fan switches. Our line of radiator fan switches includes a variety of universal switches...

Take control of your electric fan with one of our adjustable or non-adjustable fan switches. Our line of radiator fan switches includes a variety of universal switches and custom switches for hundreds of vehicle applications. The switches are designed and manufactured by the most-trusted names in automotive cooling—names like Derale, Be Cool, Flex-a-lite, Perma-Cool, and many others. We even have complete fan switch kits from wiring experts like Painless Performance and Ron Francis Wiring. Shop Summit Racing for your thermal fan switch solution today!

Take control of your electric fan with one of our adjustable or non-adjustable fan switches. Our line of radiator fan switches includes a variety of universal switches and custom switches for hundreds of vehicle applications. The switches are designed and manufactured by the most-trusted names in automotive cooling—names like Derale, Be Cool, Flex-a-lite, Perma-Cool, and many others. We even have complete fan switch kits from wiring experts like Painless Performance and Ron Francis Wiring. Shop Summit Racing for your thermal fan switch solution today!

Individual Parts

Results 1 - 25 of 161

Fan Control, Thermostatic, 185 Degrees On/165 Degrees Off, Sending Unit, Each

Part Number: BCI-75029

4.54 out of 5 stars ( 72 )

Estimated Ship Date: Today

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Sending Unit, Replacement, 3/8 in.-18 NPT, 210 Degrees On, 190 Degrees Off, Each

Part Number: BCI-75099

4.53 out of 5 stars ( 19 )

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Fan Control, Thermostatic, 185 Degrees On/175 Degrees Off, Sending Unit, 3/8 in. NPT, Each

Part Number: SUM-890117

4.18 out of 5 stars ( 65 )

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Fan Control, Thermostatic, 185 Degrees On/170 Degrees Off, Each

Part Number: PRF-30111

3.97 out of 5 stars ( 37 )

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Radiator Probe, Electric Fan Sending Unit, Each

Part Number: FLX-123209

3.0 out of 5 stars ( 1 )

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Fan Sending Unit, Replacement, Thread-in, 3/8-18 NPT, Single, 165 degrees F Off, 185 degrees F On, Each

Part Number: SPU-IX-1852TS

4.75 out of 5 stars ( 4 )

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Fan Control, Thermostatic, 195 Degrees On/185 Degrees Off, Each

Part Number: PRF-30110

3.78 out of 5 stars ( 37 )

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Fan Control, Thermostatic, 195 Degrees On/175 Degrees Off, Sending Unit, Each

Part Number: BCI-75030

3.9 out of 5 stars ( 29 )

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Electric Fan Temperature Sending Unit, Replacement, Single, 3/8-18 NPT Thread Size, Each

Part Number: SPU-IX-185TS

4.44 out of 5 stars ( 63 )

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Thermostat, 205 - 190 Degrees F, GM, Gen III, Each

Part Number: PRF-30113

3.43 out of 5 stars ( 14 )

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Temperature Sending Unit, Replacement, On at 185 Degrees, Off at 170 Degrees, Thread-in, 3/8-18 NPT Size, Each

Part Number: MAR-MFA108

4.09 out of 5 stars ( 22 )

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Electric Fan Sending Unit, Replacement, Single, Thread-in, 3/8-18 NPT Thread Size, Each

Part Number: SPU-IX-195TS

3.89 out of 5 stars ( 28 )

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Fan Control, Thermostatic, Variable Speed Sending Unit, 1/4 in. NPT, Each

Part Number: FLX-107194

3.0 out of 5 stars ( 4 )

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Temperature Sending Unit, Replacement, On at 195 Degrees, Off at 175 Degrees, Thread-in, 3/8-18 NPT Size, Each

Part Number: MAR-MFA109

3.72 out of 5 stars ( 18 )

Estimated Ship Date: Today

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Temperature Switch, Thread-In Probe, Sensor Only, Each

Part Number: MAR-MFA137

5.0 out of 5 stars ( 1 )

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Fan Switches, Digital Thermatic Fan Switch Kits, Single/Dual, Radiator Probe Sending Unit, 104-230 degrees F Range, 12 V, 24 V, Kit

Part Number: DCW-DC-0444

4.81 out of 5 stars ( 90 )

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Electric Fan Controller, Adjustable, Sending Unit, 150-240 degree F Range, Relay, Wiring Harness, Kit

Part Number: PRO-69599

4.43 out of 5 stars ( 23 )

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Fan Switch, Electric Fan Thermal Switch, Sending Unit Only Style, Thread-in, 1/2-14 NPT, Single, Each

Part Number: PRM-19107

1.71 out of 5 stars ( 7 )

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Fan Switches, Digital Gauge Fan/Electric Water Pump Switch Kit, Single/Dual, Radiator Probe Sending Unit, 41-230 degrees F Range, 12 V, 24 V, Kit

Part Number: DCW-DC-0500

Not Yet Reviewed

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Fan Switch, Electric Relay, Sending Unit, Wiring Harness, Kit

Part Number: FBR-FB403

4.75 out of 5 stars ( 4 )

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Fan Control, Single, 30 Amp Relay, Thermostatic, Adjustable, 140 to 220 Degrees, Probe Sending Unit, Kit

Part Number: FSS-35879

3.25 out of 5 stars ( 4 )

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Fan Switch, Radiator Temperature Control, Non-adjustable, Sending Unit, Wiring Harness, Kit

Part Number: ZIR-10436

Not Yet Reviewed

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Fan Switch, Radiator Temperature Control, Adjustable, 180 - 240 degrees F, Sending Unit, Wiring Harness, Kit

Part Number: ZIR-10434

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Fan Control Unit

Part Number: URO-009270

Not Yet Reviewed

Estimated Ship Date: Dec 19, 2025 if ordered today

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Estimated Ship Date: Dec 19, 2025 if ordered today

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