Relays play a critical role in cooling systems by controlling radiator and electric cooling fan operation. This guide highlights five reliable options related to the keyword relay for radiator fan. Each entry includes key features, compatibility notes, and installation considerations to help you choose a durable, heat-resistant relay that can endure automotive environments.
Summary of selected products:
| Product | Brand | Key Benefit | Pin Count / Amp Rating |
|---|---|---|---|
| 4 PCS Relays, 5 Pin | ecocstm | Waterproof, high-temp耐 and long-term reliability | 5-pin / 40A (JD1914-12V-40A) |
| Radiator Fan Relay 252307966A | WM Auto Part | OE-like mounting, precise protection | 4-pin / unspecified |
| uxcell Radiator Fan Blower Motor Relay | uxcell | Direct replacement with stable characteristics | 5-pin / not specified |
| FASTSTORM Electric Fan Relay Kit | FASTSTORM | Thermostat-controlled cooling with complete kit | 4-pin / 60A |
| Engine Cooling Fan Motor Relay (Chrysler/Dodge/Ram) | Allmotorparts | Replacement for multiple Chrysler/Dodge/Ram models | 4-pin / various |
4 PCS Relays, 5 Pin Relay For Automotive Applications

These JD1914-12V-40A relays are housed in PA66 flame-retardant material with pure copper enameled wires. The design emphasizes heat dissipation and arc erosion resistance, promoting reliable operation in high-temperature environments. Each relay is five-pin and rated at 40A, making them suitable for motor starters and electric cooling fans. The package includes four relays, offering a practical replacement option for multiple cooling circuits in a single install or over time.
Considerations:
– IP67-rated waterproof sealing helps prevent moisture ingress in humid under-hood conditions.
– Coil resistance is around 90Ω with a 1.8-watt coil, contributing to efficient energizing while keeping wiring loads reasonable.
– Suitability depends on your existing wiring harness compatibility and the number of cooling fan circuits you plan to control.
Radiator Fan Relay 252307966A

WM Auto Part’s 252307966A relay is designed to rapidly dissipate heat, promoting cooler operation and longer life for the connected components. It features precise short-circuit protection and is designed to mount identically to OE (original equipment) relays, facilitating straightforward replacement in many vehicles. The emphasis on protection helps prevent early failures in demanding driving conditions.
Considerations:
– Short-circuit protection supports electrical safety during surges.
– The exact OE-matching connectors simplify installation without custom wiring.
– Verify compatibility with your vehicle’s radiator/fan assembly before replacing stock parts.
uxcell Radiator Fan Blower Motor Relay Resistor

This uxcell component targets specific Chevrolet and Buick models, including Cruze and Cascada variants from 2011-2019, with OE references 13427161/13427160. It is a direct replacement engineered to maintain stable operation and reliability across engine cooling fan systems. The part is built to handle the thermal and electrical demands of modern cooling fans, making it a practical choice for mid-life replacement projects.
Considerations:
– Check the exact vehicle compatibility against listed OE numbers.
– Installation should follow standard wiring practices to ensure consistent fan operation.
– The configuration is a resistor-based approach, often used to modulate fan speeds in certain OEM setups.
FASTSTORM Electric Fan Relay Kit

FASTSTORM offers a 60A, four-pin waterproof relay kit with thermostat control. This kit is compatible with a range of fan sizes (10″ to 16″) and is designed for electric fan conversion or replacement projects. The included thermostat switch enables automatic operation at set temperatures, helping maintain engine temperature within an optimal range and potentially extending engine life by avoiding prolonged high-speed fan operation.
Considerations:
– The 185°F on / 175°F off thermostat provides precise temperature-based control.
– The waterproof design supports reliability in wet or flooded environments.
– The kit includes wiring guidance, making DIY installation more straightforward for enthusiasts.
Engine Cooling Fan Motor Relay Radiator Fan Resistor

Allmotorparts provides a replacement cooling motor relay and radiator fan resistor, designed for Chrysler, Dodge, and RAM vehicles. It is compatible with models such as Town & Country, Grand Caravan, Journey, and Ram C/V across multiple model years. The part is presented as a practical, direct replacement that addresses common symptoms like fan running at high speed only or failing to operate at low speeds, which can indicate a faulty relay or resistor.
Considerations:
– Check compatibility against your specific vehicle year and model.
– The kit focuses on providing correct resistance and switching behavior for multi-speed cooling fans.
– Replacement helps restore normal fan behavior and cooling efficiency when OEM components fail.
2Pcs Four-Pin 40/30A Relay Kit

This Middrivr kit provides 4-pin relays rated at 30A or 40A, designed for A/C control and radiator fan applications. The nylon shell and brass pins indicate a durable structure suitable for automotive environments. It is positioned as a reliable option for replacing failing relays or expanding a vehicle’s cooling control system to manage larger current draws.
Considerations:
– Confirm the exact current requirements of your cooling circuit before choosing between 30A and 40A variants.
– The nylon housing and brass pins suggest good temperature resistance and corrosion protection.
– Integration with your existing harness should be straightforward if OE-style connectors are used.
GELUOXI Engine Radiator Cooling Fan Relay Kit

GELUOXI’s relay kit targets multiple Chrysler-derived platforms (Pacificia, Voyager, Grand Caravan, Town & Country) across several model years. The OE part references include 902-310, 68023333AA, and 68041017AB, marking it as a common replacement in typical engine cooling fan assemblies. The kit supports replacing worn relays and resistors to restore proper fan speed control and cooling behavior.
Considerations:
– Verify compatibility with your vehicle’s year, make, and model.
– OE part numbers provide a helpful cross-reference to ensure correct fit.
– Compatibility with multi-speed cooling fan configurations is a key benefit.
WMAutoPart Radiator Fan Relay 1581106

The 1581106 relay from WM Auto Part emphasizes rapid heat dissipation and precise short-circuit protection. Its OE-style mounting and connectors simplify installation and replacement in compatible vehicles. This makes it a practical option for maintaining efficient cooling system performance, especially in hot climates or high-demand driving scenarios.
Considerations:
– Check that the relay matches your vehicle’s connector style.
– Short-circuit protection helps prevent electrical faults from escalating.
– Good candidate for standard cooling fan replacement in common GM/Ford/Chrysler-based platforms depending on compatibility.
Buying Guide: Key Purchase Considerations
- Current rating and pin configuration: Ensure the relay’s amperage rating matches your fan or actuator’s draw and that the pin count (4-pin, 5-pin) aligns with your wiring harness.
- Weather resistance: IP ratings (like IP67) and sealed housings help prevent moisture ingress in under-hood environments.
- Temperature and coil specs: Coil resistance and coil power affect energizing efficiency and heat generation; verify compatibility with your vehicle’s voltage system (12V typical).
- OE compatibility and replacement reality: If replacing a failed relay, choosing a part with OE-mimicking connectors reduces wiring changes and fitment issues.
- Thermostat-controlled options: Some kits include thermostatic switches for automatic control; consider whether you want temperature-based activation to optimize engine cooling and fuel economy.
- Installation scope: Some products are standalone relays, while others are full kits with wiring diagrams and accompanying adapters. Decide based on your DIY comfort and vehicle model.
- Vehicle-specific considerations: Compatibility notes and part numbers are important for brands and models ranging from Chrysler/Dodge/Ram to GM products; verify against your exact year and trim level.
- Reliability and durability: Look for flame-retardant housings, copper wiring, and corrosion-resistant pins to improve longevity in harsh automotive environments.
In choosing a radiator fan relay, consider how critical cooling reliability is for your vehicle usage. For daily commuting, a standard, OE-like replacement may suffice. For performance or high-heat conditions, a weatherproof, high-current relay with thermal management or a complete kit may offer better long-term stability and fewer maintenance needs.