Best Radiator Fan Relays of 2026

The ecocstm Fan Relay Kit is designed to work with various cooling fans from 10 to 16 inches, making it a versatile choice for many vehicles and trucks. It helps you replace faulty wiring easily, ensuring your engine stays cool. Built with heat-resistant nylon and waterproof casing, this kit is durable and reliable for long-term use. The wiring uses thick, high-quality copper wire wrapped in flexible PVC, so you don’t have to worry about breaks or poor connections. Plus, it features a thermostat that automatically controls the fan based on engine temperature to keep your engine running safely and efficiently. Installation is straightforward with clear wiring instructions, making it user-friendly for anyone.

The Emerson Heavy-Duty Fan Relay is designed to provide reliable performance for your radiator fan system. Its sturdy construction ensures durability, making it a dependable choice for heavy-duty use. The relay features a brick-red color that is nonflammable, helping to keep your setup safe by minimizing fire risks. Additionally, it offers a fireproof acoustic seal, which helps reduce noise, giving you a quieter experience. Made in the United States, this product meets quality standards that you can trust for your vehicle’s cooling needs.

The Modine HVAC Fan Relay is designed to support your heating and cooling system efficiently. Measuring 3.15 by 4.95 by 1.6 inches, it offers a compact size that fits easily into your HVAC setup. This relay operates at 24 volts, making it compatible with many standard HVAC systems. As a relay, it helps control the fan's power, ensuring smooth and reliable operation. Using the Modine HVAC Fan Relay means you can expect consistent performance and better control over your system's fan, which helps maintain a comfortable home environment.

The Four Seasons Relay Controller is designed to enhance your vehicle's cooling system. With a lightweight design at just 0.05 pounds, it won't add unnecessary weight to your car. Its compact dimensions make it easy to install in tight spaces, ensuring a hassle-free setup. This controller plays a vital role in regulating the radiator fan, helping to maintain optimal engine temperature. By efficiently managing the fan's operation, it can improve your vehicle's performance and fuel efficiency, giving you peace of mind on the road.

The Casalytics 12V 50A Relay is a powerful automotive relay designed to handle high electrical loads up to 50 amps, which is perfect for running headlights, horns, and cooling fans reliably. Its Single Pole Double Throw (SPDT) setup offers you flexible switching options, making it adaptable to many different vehicle electrical systems. The relay is built to withstand tough conditions thanks to its sealed casing and dust cover, protecting it from moisture and debris. Plus, it comes with a sturdy steel bracket that helps keep the relay secure and stable, even when your vehicle is exposed to vibrations and rough roads.

The APPERFiT Fan Relay is designed to replace the worn-out or broken radiator fan relay in your RAM ProMaster cargo van models from 2014 to 2025. This replacement part matches the original factory specifications exactly, ensuring a perfect fit and reliable performance. Made from durable, high-quality materials, it can handle daily use and tough conditions without losing functionality or appearance. Installing this relay helps maintain your engine’s cooling system, preventing overheating and keeping your van running smoothly. Plus, it comes with a 1-year warranty, giving you peace of mind and support if you have any questions or concerns.

The WM Auto Fan Relay is designed to help keep your vehicle running smoothly by effectively managing heat. It quickly cools down the system, which helps extend the life of your parts. This relay also includes built-in protection against electrical shorts, so you can trust it to keep your vehicle safe from potential damage. Its mounting points and connectors match the original equipment exactly, making installation straightforward and hassle-free. With its precise fit and reliable operation, the WM Auto Fan Relay ensures your radiator fan works just like the original, giving you peace of mind on the road.

The Kwaich Radiator Fan Relay is a reliable replacement part designed to control the radiator and cooling fans in your vehicle's engine compartment. It fits directly into the under-hood fuse and relay box, making installation straightforward—just disconnect the battery, pull out the old relay, and plug in the new one. This relay helps prevent your engine from overheating by ensuring the cooling fans operate correctly, especially when your car is idling or stuck in traffic. If you notice your A/C getting warm or the cooling fan not working, this relay could be the fix you need to keep your vehicle running smoothly.

The Vudajuley Fan Relay is designed to fit a wide range of Nissan and INFINITI models, making it a versatile replacement part for your vehicle. It ensures a reliable connection for your radiator fan, which helps keep your engine cool and running efficiently. Made from durable materials, this relay resists oxidation, dust, water, and high temperatures, so you can count on it to last. With its strong electrical conductivity, it provides stable power to your cooling system, helping prevent engine overheating and maintaining smooth performance on the road.

The Sonzrod 50A Auto Relay offers strong and reliable power delivery with its heavy-duty 50A rating and high-quality materials, ensuring your vehicle’s circuits run smoothly even under heavy load. It’s designed to fit perfectly in Hyundai and Kia models like the Santa Fe and Sorento, so you won’t need to worry about complicated installations or modifications. This relay helps fix common issues such as engine stalling, starting problems, and cooling fan failures, making it easier for you to maintain your car’s performance. Plus, it’s a cost-effective choice when you know exactly which relay needs replacing, saving you money and hassle.