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Mr. Gasket Electric Fan Harness & Relay Kit with 195 Degree Temperature Switch

Temperature Controlled Cooling Fan Harness & Relay Kit with 195 degree temperature switch. 30 Amp Relay and Circuit Breaker.

PART# 40105G

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$42.22   Suggested Retail
$34.20   Holleydays Price
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Mr. Gasket wiring harness & relay kits protect your electrical system and provide reliable and consistent power for your high performance electric fan. These kits include high quality heavy gauge wiring, 30 amp relay, 30 amp circuit breaker, pre-wired relay connector, crimp terminals & hardware. Each kit comes with easy to follow instructions that are written specifically for that application.


  • 30 AMP Relay
  • Wiring Harness is 100" Long - 10-18 Ga. Wire
  • 30 Amp Circuit Breaker
  • 3/8" NPT Temperature Sensor w/ 1/2" NPT Reducer Bushing
  • Crimp Terminals & Hardware
  • Special Connector Allows Additional Relays to be Nested Together for Clean Installation
  • Easy to Follow Instructions Simplify Wiring Your Electric Fan
  • Temperature Switch Turns on Fan at 195 Degrees and Off at 85 Degrees


BrandMr. Gasket
Circuit Breaker Amperage30 Amps
Emission Code5
Product TypeFan Wiring Kit
Relay Amperage30 Amps
Sending Unit Thread Size3/8-18 NPT
WarrantyLimited 90 Day
Wiring Harness IncludedYes
Part Number40105G



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Note: Use liquid sealant only on the threads of the temperature sensor. The use of plumbers tape will insulate this sensor from ground and it will not work correctly.

Warranty Information

Limited 90 Day: See Details
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        Some parts are not legal for use in California or other states with similar regulations.

         X  Holleydays 2020 20% off and DD
         X  Holleydays 2020 20% off and DD