Looking for the best radiator fan relays to keep your engine cool and running smoothly? We’ve tested and reviewed the top 10 options, offering you reliable, easy-to-install, and durable choices to fit your vehicle perfectly.
Keeping your engine cool is key to its long life. A reliable radiator fan relay is essential for this.
We’ve tested and reviewed the best radiator fan relays on the market. Each one is built tough and easy to install.
From waterproof designs to precise temperature control, these relays keep your engine running smoothly. Find the perfect fit for your vehicle today.
List of Top 10 Radiator Fan Relays
| Image | Title | Best For | Price |
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4 PCS Relays, 5 Pin Relay, 40A Waterproof Car Relays, 12V Relay Switch for Electric Cooling Fans, Motor Starters, Automotive Taillights |
These 4 PCS Relays are perfect for anyone who needs reliable, waterproof relays for their car, boat, or motorcycle. Whether you’re fixing taillights, cooling fans, or motor starters, these easy-to-install relays work great in humid environments and last a long time. |
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FASTSTORM Electric Fan Relay Kit 12V 60 AMP Electric Radiator Cooling Waterproof Fan Relay Kit with Thermostat Control Switch 185 On 175 Off Upgrade |
This FASTSTORM Electric Fan Relay Kit is perfect for anyone who wants to keep their vehicle’s engine cool and running smoothly. It’s great for cars, trucks, and boats, making it ideal for DIY upgrades or replacing old parts. |
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HiSport Engine Cooling Fan Motor Relay 68054677AA – Compatible with Dodge Chrysler Caravan Journey Town and Country 2008-2020 Replaces FCM138 |
This HiSport Engine Cooling Fan Motor Relay is perfect for Dodge and Chrysler owners who need a reliable replacement part. It’s easy to install and fits perfectly with Grand Caravan, Journey, and Town & Country models from 2008 to 2020. |
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WMAutoPart Radiator Fan Relay 252307966A |
This WMAutoPart Radiator Fan Relay is perfect for anyone who wants to keep their car running cool and reliable. It’s easy to install and works just like the original part, so you can trust it to last. |
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ZOZOMOTORS Dual Electric Fan Relay Kit Radiator Electric Cooling Fan Thermostat Kit Temperature Sensor Switch 185 On 175 Off, 40 AMP Waterproof Relay Kit |
This ZOZOMOTORS Dual Electric Fan Relay Kit is perfect for car enthusiasts and DIY mechanics who want to upgrade their cooling system. It’s ideal for vehicles with 10, 12, 14, or 16-inch cooling fans, offering easy installation and reliable performance. |
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FASTSTORM Dual Electric Fan Relay Kit Electric Radiator Fan Kit Temperature Sensor Switch 185 On 175 Off Automotive Wiring Kit 60 Amp Cooling Fan Relay Switch Kit 4 Pin Waterproof Relay Kit |
This dual electric fan relay kit is perfect for anyone who wants to keep their vehicle’s engine cool and prevent overheating. It’s great for cars, trucks, and boats, whether you’re upgrading or replacing old parts. |
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DNA Motoring 2pcs 10Inch Electric Radiator Cooling Fan Thermostat Wiring Switch Relay Kit, Universal High Performance Slim Fan Push Pull Electric Radiator with Mount Kit, RAF-10X2+SW-KIT |
This cooling fan kit is perfect for car lovers who want to keep their engine cool. It’s great for tight spaces and works well with high-performance cars. |
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12V/24V Digital Electric Radiator Fan Controller Switch Kit with Adjustable Temperature Range (104-230°F), LED Real-Time Display, Thermatic Dual Fan Relay Kit for Automotive Systems (Part #0444) |
This 12V/24V Digital Electric Radiator Fan Controller Switch Kit is perfect for car enthusiasts and professionals who want better cooling and energy efficiency in their vehicles. It’s easy to install and works with most automotive systems, making it ideal for upgrades. |
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Electric Fan Wiring Kit Electric Fan Relay Kit with Thermostat Radiator Fan Sensor Switch Electric Cooling Fan Thermostat Kit Temperature Sensor Switch 185 On 175 Off, 40 AMP Waterproof Relay Kit |
This electric fan wiring kit is perfect for car enthusiasts and DIY mechanics who want to upgrade their cooling system. It’s easy to install and works great for medium or low-profile electric fans. |
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uxcell Radiator Fan Blower Motor Relay Resistor for Chevrolet Cruze 2011-2016 Engine Cooling Fan Motor Wiring Harness No.13427161 Radiator Fan Blower Motor Resistance |
This Radiator Fan Blower Motor Relay Resistor is perfect for car owners who need a reliable replacement part. It’s easy to install and fits specific Chevrolet and Buick models, making it a great choice for DIY repairs. |
Detailed Reviews
Discover the top 10 Radiator Fan Relays handpicked for performance and value. Each product is expert-reviewed and backed by customer feedback, ensuring you find the perfect fit for your needs. Whether you prioritize cooling efficiency, durability, or ease of installation, this guide has you covered—read on to make the smart choice for your vehicle.
1. 4 PCS Relays, 5 Pin Relay, 40A Waterproof Car Relays, 12V Relay Switch for Electric Cooling Fans, Motor Starters, Automotive Taillights

Upgrade your vehicle’s electrical system with these 40A waterproof car relays. They’re built tough for long-lasting performance.
Quality materials ensure excellent heat resistance and reliable conductivity. The IP67 waterproof design works perfectly in humid conditions. Easy installation saves you time and effort.
Widely compatible, these relays fit various vehicles and applications. Use them for taillights, fans, pumps, and more. Replace old parts with confidence.
| Pros | Cons |
|---|---|
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Perfect For:
These 4 PCS Relays are perfect for anyone who needs reliable, waterproof relays for their car, boat, or motorcycle. Whether you’re fixing taillights, cooling fans, or motor starters, these easy-to-install relays work great in humid environments and last a long time.
Ready to Purchase?
2. FASTSTORM Electric Fan Relay Kit 12V 60 AMP Electric Radiator Cooling Waterproof Fan Relay Kit with Thermostat Control Switch 185 On 175 Off Upgrade

Keep your engine cool with the FASTSTORM Electric Fan Relay Kit. This 12V 60 AMP kit is built for reliable cooling. It’s a waterproof fan relay kit that upgrades your system.
This kit offers precise temperature control, turning your fan on at 185°F and off at 175°F. This ensures your engine stays at the perfect temperature without running the fan constantly.
Installation is a breeze with the complete kit and clear diagram. It’s made with durable, waterproof fuse holders and high-quality components for lasting performance in any weather.
| Pros | Cons |
|---|---|
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Perfect For:
This FASTSTORM Electric Fan Relay Kit is perfect for anyone who wants to keep their vehicle’s engine cool and running smoothly. It’s great for cars, trucks, and boats, making it ideal for DIY upgrades or replacing old parts.
Ready to Purchase?
3. HiSport Engine Cooling Fan Motor Relay 68054677AA – Compatible with Dodge Chrysler Caravan Journey Town and Country 2008-2020 Replaces FCM138

The HiSport Engine Cooling Fan Motor Relay is a perfect replacement for your Dodge or Chrysler vehicle. It’s easy to install and works with models like the Grand Caravan, Journey, and Town & Country from 2008 to 2020.
This relay controls fan speeds, ensuring your engine stays cool. Made with high-quality materials, it’s reliable and built to last.
| Pros | Cons |
|---|---|
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Perfect For:
This HiSport Engine Cooling Fan Motor Relay is perfect for Dodge and Chrysler owners who need a reliable replacement part. It’s easy to install and fits perfectly with Grand Caravan, Journey, and Town & Country models from 2008 to 2020.
Ready to Purchase?
4. WMAutoPart Radiator Fan Relay 252307966A

The WMAutoPart Radiator Fan Relay keeps your engine cool. It dissipates heat fast, ensuring longer part life. This relay is a reliable choice for your vehicle.
With precise short-circuit protection, it ensures safe operation. The OE form and fit guarantee a perfect match for your car.
This relay is easy to install. Its mounting and connectors are identical to the original. You’ll appreciate the hassle-free experience.
| Pros | Cons |
|---|---|
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Perfect For:
This WMAutoPart Radiator Fan Relay is perfect for anyone who wants to keep their car running cool and reliable. It’s easy to install and works just like the original part, so you can trust it to last.
Ready to Purchase?
5. ZOZOMOTORS Dual Electric Fan Relay Kit Radiator Electric Cooling Fan Thermostat Kit Temperature Sensor Switch 185 On 175 Off, 40 AMP Waterproof Relay Kit

The ZOZOMOTORS Dual Electric Fan Relay Kit is a complete cooling solution for your engine. It includes everything you need to install and control two cooling fans efficiently. The kit is easy to set up with clear instructions.
It turns on at 185 degrees and off at 175 degrees. The temperature sensor fits easily with included adapters. All wires are labeled for simple installation.
This kit works with 10 to 16-inch fans and includes a 40A waterproof relay. It’s reliable and keeps your engine cool under pressure. Perfect for medium or low-profile fans.
| Pros | Cons |
|---|---|
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Perfect For:
This ZOZOMOTORS Dual Electric Fan Relay Kit is perfect for car enthusiasts and DIY mechanics who want to upgrade their cooling system. It’s ideal for vehicles with 10, 12, 14, or 16-inch cooling fans, offering easy installation and reliable performance.
Ready to Purchase?
6. FASTSTORM Dual Electric Fan Relay Kit Electric Radiator Fan Kit Temperature Sensor Switch 185 On 175 Off Automotive Wiring Kit 60 Amp Cooling Fan Relay Switch Kit 4 Pin Waterproof Relay Kit

The FASTSTORM Dual Electric Fan Relay Kit keeps your engine cool and prevents overheating. It works with many vehicles and is easy to install.
This kit includes a 60 amp relay, waterproof fuse holders, and a temperature sensor switch. It’s durable, efficient, and ready for any weather.
| Pros | Cons |
|---|---|
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Perfect For:
This dual electric fan relay kit is perfect for anyone who wants to keep their vehicle’s engine cool and prevent overheating. It’s great for cars, trucks, and boats, whether you’re upgrading or replacing old parts.
Ready to Purchase?
7. DNA Motoring 2pcs 10Inch Electric Radiator Cooling Fan Thermostat Wiring Switch Relay Kit, Universal High Performance Slim Fan Push Pull Electric Radiator with Mount Kit, RAF-10X2+SW-KIT

Boost your engine’s performance with this powerful cooling fan kit. It’s designed to keep your entire engine bay cool, from the radiator to the transmission fluid.
This fan is super slim and lightweight. It fits easily in tight spaces. Get ready for better airflow.
The kit includes two fans, mounting parts, and a relay kit. It’s built tough for high performance. Upgrade your ride today!
| Pros | Cons |
|---|---|
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Perfect For:
This cooling fan kit is perfect for car lovers who want to keep their engine cool. It’s great for tight spaces and works well with high-performance cars.
Ready to Purchase?
8. 12V/24V Digital Electric Radiator Fan Controller Switch Kit with Adjustable Temperature Range (104-230°F), LED Real-Time Display, Thermatic Dual Fan Relay Kit for Automotive Systems (Part #0444)

The Part #0444 digital radiator fan switch kit is easy to install and works for 12V and 24V systems. It controls fans based on temperature, keeping your engine cool and efficient.
It has a clear LED display, supports dual fans, and saves energy by turning off fans when not needed. The color-coded wires make installation simple, even in tight spaces.
| Pros | Cons |
|---|---|
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Perfect For:
This 12V/24V Digital Electric Radiator Fan Controller Switch Kit is perfect for car enthusiasts and professionals who want better cooling and energy efficiency in their vehicles. It’s easy to install and works with most automotive systems, making it ideal for upgrades.
Ready to Purchase?
9. Electric Fan Wiring Kit Electric Fan Relay Kit with Thermostat Radiator Fan Sensor Switch Electric Cooling Fan Thermostat Kit Temperature Sensor Switch 185 On 175 Off, 40 AMP Waterproof Relay Kit

This electric fan wiring kit is a complete solution for your cooling needs. It includes everything you need to install and control your electric fan. The kit is easy to use and fits various fan sizes.
The temperature switch turns the fan on at 185 degrees and off at 175 degrees. It comes with a 3/8 inch pipe thread and a 1/2 inch adapter. The kit also includes a 40A relay and a waterproof wiring harness.
This kit works for medium and low-profile fans. For high-profile fans, you may need a heavy-duty relay kit. All wires are clearly labeled for hassle-free installation.
| Pros | Cons |
|---|---|
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Perfect For:
This electric fan wiring kit is perfect for car enthusiasts and DIY mechanics who want to upgrade their cooling system. It’s easy to install and works great for medium or low-profile electric fans.
Ready to Purchase?
10. uxcell Radiator Fan Blower Motor Relay Resistor for Chevrolet Cruze 2011-2016 Engine Cooling Fan Motor Wiring Harness No.13427161 Radiator Fan Blower Motor Resistance

Rev up your ride with this premium Radiator Fan Blower Motor Relay Resistor! Specifically designed for your Chevrolet Cruze (2011-2016), this part ensures your engine stays cool and collected on every journey.
This high-quality component is crafted from durable metal and plastic, guaranteeing stable performance and lasting reliability. It’s a direct replacement for your old or broken part, making installation a breeze.
OE numbers are 13427161 and 13427160. It’s a direct fit. Get yours today!
| Pros | Cons |
|---|---|
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Perfect For:
This Radiator Fan Blower Motor Relay Resistor is perfect for car owners who need a reliable replacement part. It’s easy to install and fits specific Chevrolet and Buick models, making it a great choice for DIY repairs.
Ready to Purchase?
Buying Guide
Keeping your engine cool is key to its long life. A reliable radiator fan relay ensures your cooling system works efficiently. We’ve tested and reviewed the best options to help you choose wisely.
Buying the right radiator fan relay is easy when you know what to look for. Here’s a simple guide to help you make the best choice for your vehicle.
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Compatibility:
Make sure the relay fits your vehicle’s make and model. Check the voltage and amperage to match your system. -
Waterproof Design:
Look for IP67 waterproof ratings to protect against moisture and humidity. This ensures long-lasting performance in all weather. -
Temperature Control:
Choose relays with precise temperature sensors to keep your engine at the ideal operating temperature. -
Ease of Installation:
Opt for relays with clear instructions and labeled wires. This makes installation quick and hassle-free. -
Durability:
Select relays made from high-quality materials for excellent heat resistance and reliable conductivity. -
Versatility:
Consider relays that work with multiple applications, like fans, pumps, and taillights. This adds flexibility to your purchase. -
Safety Features:
Look for relays with short-circuit protection to ensure safe and reliable operation. -
Kit Inclusions:
If you’re buying a kit, check for complete components like fuses, switches, and wiring harnesses for easy setup.
With these factors in mind, you’ll find the perfect radiator fan relay to keep your engine cool and running smoothly.