Auxiliary electric cooling fan kits for 2026 provide reliable supplemental airflow to keep radiator temps steady and prevent overheating.
These nine kits cover compact 10–12 inch slim fans for tight engine bays, robust 16 inch high-flow models for large radiators, and push-pull dual setups for maximum CFM and redundancy.
Each kit includes thermostat, relay, wiring, and mounting hardware for straightforward installation.
Look for sealed motors, heat-resistant blades, proper shroud coverage, and matched amperage to your wiring to reduce overheating risk and maintain engine performance.
| BLACKHORSE-RACING 12″ Electric Radiator Fan Kit |
| Slim Universal Pick | Voltage: 12V | Mounting Hardware Included: Mount brackets and tie straps included | Universal Fit / Application: Universal fit depending on radiator size (radiator/A/C/intercooler/etc.) | VIEW LATEST PRICE | Read Our Analysis |
| 12″ Electric Radiator Cooling Fan Kit (2-Pack) |
| Best Value (2-Pack) | Voltage: 12V | Mounting Hardware Included: Mount brackets and tie straps kit included | Universal Fit / Application: Universal (fits various radiators/systems) | VIEW LATEST PRICE | Read Our Analysis |
| 16″ Black 12V Slim Electric Radiator Cooling Fans (2) |
| High-Flow Dual Pack | Voltage: 12V | Mounting Hardware Included: Mount kit included | Universal Fit / Application: Universal fit depending on radiator size (radiator/A/C/intercooler/etc.) | VIEW LATEST PRICE | Read Our Analysis |
| 10″ Slim 12V Push-Pull Radiator Cooling Fans (2-Pack) |
| Compact Performance | Voltage: 12V | Mounting Hardware Included: Mount brackets and tie straps included | Universal Fit / Application: Universal fit depending on radiator size | VIEW LATEST PRICE | Read Our Analysis |
| 16″ 12V Electric Radiator Cooling Fan Relay Kit |
| Heavy-Duty CFM | Voltage: 12V | Mounting Hardware Included: Mount brackets and tie straps included | Universal Fit / Application: Universal auxiliary cooling for radiator/A/C/intercooler/etc. | VIEW LATEST PRICE | Read Our Analysis |
| DNA Motoring 12″ Electric Radiator Fan Push-Pull Kit |
| Performance Tuners’ Choice | Voltage: 12V | Mounting Hardware Included: 2 fan mounting kits included | Universal Fit / Application: Universal fit for radiator/A/C/intercooler/oil/transmission coolers | VIEW LATEST PRICE | Read Our Analysis |
| 7″ Universal Slim Push-Pull 12V Radiator Cooling Fans |
| Tight-Space Solution | Voltage: 12V | Mounting Hardware Included: Mount brackets and tie straps kit included | Universal Fit / Application: Universal fit depending on radiator size | VIEW LATEST PRICE | Read Our Analysis |
| Automotive Radiator & Cooling Fan Mounting Kit (2-Pack) |
| Mounting Essential | Voltage: (accessory kit) — intended for 12V electric fan installations (compatible) | Mounting Hardware Included: Complete mounting kit (clips, ties, springs, foam pads) included | Universal Fit / Application: Universal mounting for electric fans and transmission coolers | VIEW LATEST PRICE | Read Our Analysis |
| Dual Electric Radiator Fan Relay Thermostat Kit |
| Complete Wiring Kit | Voltage: For 12V fans (wiring kit designed for 12V systems) | Mounting Hardware Included: Wiring kit includes ring terminals, connectors (mounting hardware for wiring/relay) | Universal Fit / Application: Compatible with 10″–16″ electric cooling fans (universal wiring kit) | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
BLACKHORSE-RACING 12″ Electric Radiator Fan Kit
At the point you want a compact, reliable auxiliary fan that fits tight engine bays and cools a variety of systems, the BLACKHORSE-RACING 12 inch electric radiator fan is a strong pick. You’ll like its slim 12.44 inch diameter and 2.36 inch thickness because it slips into cramped spaces without fuss. It draws under 7.5 amps, runs at about 2000 RPM, and pushes up to 800 CFM to help radiators, A C, intercoolers, oil coolers, transmissions, and engine bays. You get a thermostat set to 180°F with a 165°F off point, brackets, straps, and clear instructions.
- Voltage:12V
- Mounting Hardware Included:Mount brackets and tie straps included
- Universal Fit / Application:Universal fit depending on radiator size (radiator/A/C/intercooler/etc.)
- Reversible Push/Pull Operation (or Supports Push/Pull):Auxiliary cooling; slim profile (push/pull implied via mount — reversible usage noted in other similar entries)
- Temperature-Control/Relay Kit Included (Thermostat or Relay):Thermostat & relay kit included (turn-on 180°F / off 165°F)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):Heat-resistant, corrosion-resistant electronic radiator construction
- Additional Feature:Slim profile clearance
- Additional Feature:10-blade design
- Additional Feature:3/8″ NPT probe
12″ Electric Radiator Cooling Fan Kit (2-Pack)
In case you want a compact, reliable cooling improvement for a modified car or a tight engine bay, this 12 inch electric radiator cooling booster fan kit (2-pack) is a smart choice that won’t take up much space. You get two slim 12.44 inch diameter fans with 10 S curved blades that move up to 800 CFM at 2000 RPM while drawing under 7.5 amps. The 12V 80W motors stay light and tough against heat and corrosion. You’ll like the included brackets and tie straps for direct bolt on fit, reversible puller use, and clearance for radiators, A C condensers, intercoolers, and oil or transmission coolers.
- Voltage:12V
- Mounting Hardware Included:Mount brackets and tie straps kit included
- Universal Fit / Application:Universal (fits various radiators/systems)
- Reversible Push/Pull Operation (or Supports Push/Pull):Reversible; can be used as a puller (flipable)
- Temperature-Control/Relay Kit Included (Thermostat or Relay):(Fan pack) includes wiring/mounting; relay/thermostat implied in full kit versions — this listing is fan assembly (no explicit relay listed)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):Lightweight durable plastic; good heat and corrosion resistance
- Additional Feature:Reversible bolt-on installation
- Additional Feature:S-curved blades
- Additional Feature:Two-fan pack
16″ Black 12V Slim Electric Radiator Cooling Fans (2)
Should you want a compact, high-flow solution that fits tight engine bays, this pair of 16 inch black slim electric radiator fans is a smart choice. You’ll get two 16.82 inch diameter fans, each 3.27 inches thick, that push or pull air whenever you flip the blades and reverse the wire. They run on 12 V and 120 W, spin up to 2000 RPM, and move at least 1000 m³/h while keeping noise near 50 dB. The 10 wide blades are plastic but heat and corrosion resistant. You’ll find a mount kit, 2-pin connector, and universal fit for many coolers.
- Voltage:12V
- Mounting Hardware Included:Mount kit included
- Universal Fit / Application:Universal fit depending on radiator size (radiator/A/C/intercooler/etc.)
- Reversible Push/Pull Operation (or Supports Push/Pull):Reversible operation (push or pull by flipping blade and reversing wire)
- Temperature-Control/Relay Kit Included (Thermostat or Relay):Kit includes relay/relay kit components (pack of 2; mounting kit included)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):Plastic; heat resistance and corrosion resistance for extended life
- Additional Feature:≥1000 m³/h airflow
- Additional Feature:50 dB noise level
- Additional Feature:2-pin connector
10″ Slim 12V Push-Pull Radiator Cooling Fans (2-Pack)
You’ll appreciate these 10 inch slim 12V push-pull radiator cooling fans provided that you need compact, powerful auxiliary cooling for tight engine bays or aftermarket setups. You get two 11.42 inch diameter fans that are only 2.36 inch thick, plus mount brackets and tie straps, so installation stays neat. They run at 12V and 80W each, with six blades spinning up to 2400 RPM and pushing at least 800 m³/hour. You can flip blades or reverse wiring to switch between push or pull mode. They resist heat and corrosion, last long, work on radiators, A/C, intercoolers and transmissions, and the maker offers support.
- Voltage:12V
- Mounting Hardware Included:Mount brackets and tie straps included
- Universal Fit / Application:Universal fit depending on radiator size
- Reversible Push/Pull Operation (or Supports Push/Pull):Reversible push/pull operation (flip blade & reverse wiring)
- Temperature-Control/Relay Kit Included (Thermostat or Relay):(Fan pack) includes mount & tie straps; thermostat/relay available in kit variants (not explicitly listed)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):Good heat resistance; good corrosion resistance
- Additional Feature:2400 RPM max speed
- Additional Feature:6-blade design
- Additional Feature:Dual-fan kit included
16″ 12V Electric Radiator Cooling Fan Relay Kit
Provided you drive a modified or aging vehicle and want dependable extra cooling without a lot of fuss, this 16 inch 12V electric radiator cooling fan relay kit is a strong choice. You’ll get a slim, 16.82 inch diameter fan with ten S-curved blades. It moves up to 1000 CFM at about 2000 RPM while drawing under 11 amps. The kit includes a thermostat, relay, switch, brackets, and straps so you can mount it as a puller or bolt it on. Set the probe to 180°F to start and 165°F to stop, and verify radiator fitment beforehand.
- Voltage:12V
- Mounting Hardware Included:Mount brackets and tie straps included
- Universal Fit / Application:Universal auxiliary cooling for radiator/A/C/intercooler/etc.
- Reversible Push/Pull Operation (or Supports Push/Pull):Reversible; direct bolt-on, reversible; can be mounted as puller
- Temperature-Control/Relay Kit Included (Thermostat or Relay):Thermostat wiring, switch and relay kit included (turn-on 180°F / off 165°F)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):Plastic blades, S-curved; corrosion/heat-resistant design
- Additional Feature:≤11 amp draw
- Additional Feature:Activates by grounding
- Additional Feature:1000 CFM rating
DNA Motoring 12″ Electric Radiator Fan Push-Pull Kit
Should you need a compact, high-flow cooling setup that fits tight engine bays and still pulls serious airflow, the DNA Motoring 12 inch push-pull kit is a smart choice you can count on. You’ll get two ultra-slim 12 inch fans that spin up to 2250 RPM and move 1550 CFM while drawing just 6.67 amps at 12 volts. The kit includes mounting hardware and a relay kit with a thermostat switch that kicks on at 180°F. Its lightweight JDM-style blades cut drag, so you’ll have strong cooling for radiator, A C, intercooler, oil and transmission systems.
- Voltage:12V
- Mounting Hardware Included:2 fan mounting kits included
- Universal Fit / Application:Universal fit for radiator/A/C/intercooler/oil/transmission coolers
- Reversible Push/Pull Operation (or Supports Push/Pull):Dual-mode operation: push/pull (polarity switch)
- Temperature-Control/Relay Kit Included (Thermostat or Relay):Relay kit included (relay, circuit breaker, temperature-controlled switch; 180°F on / 165°F off)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):JDM-spec plastic blades; durable construction and heat resistance
- Additional Feature:Racing-grade lightweight design
- Additional Feature:Polarity switch included
- Additional Feature:Includes circuit breaker
7″ Universal Slim Push-Pull 12V Radiator Cooling Fans
Should you want a compact, powerful cooling upgrade that fits tight engine bays and helps prevent overheating during heavy use, the 7 inch Universal Slim Push-Pull 12V Radiator Cooling Fans are a smart choice. You get two black 7 inch fans, each 80W and rated at 12V, with ten blades that spin up to 2900 RPM and push at least 800 CFM. Their 2.56 inch slim profile and reversible push or pull mode let you fit them where space is tight. They resist heat and corrosion, and include mounting brackets, tie straps, and clear instructions, plus support should you require help.
- Voltage:12V
- Mounting Hardware Included:Mount brackets and tie straps kit included
- Universal Fit / Application:Universal fit depending on radiator size
- Reversible Push/Pull Operation (or Supports Push/Pull):Reversible (push/pull) operation
- Temperature-Control/Relay Kit Included (Thermostat or Relay):(Fan set) Includes mounting kit; thermostat/relay available in kit variants (not explicitly listed)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):Good heat resistance and corrosion resistance
- Additional Feature:2900 RPM max speed
- Additional Feature:Compact 7″ diameter
- Additional Feature:10-blade high-speed
Automotive Radiator & Cooling Fan Mounting Kit (2-Pack)
Should you need a simple, reliable way to mount an electric radiator fan or add an auxiliary transmission cooler, this two-pack mounting kit is a smart choice for DIYers and pro mechanics alike. You’ll get parts for two installs, so you can outfit both sides or keep a spare. The kit includes cable ties, sturdy ABS clips, stainless springs, and adhesive sponge pads that cut vibration and noise. You’ll like the flexible routing options and secure fixation around shrouds and frames. Packaged neatly in a compact bag, the kit feels thoughtful, handy, and ready whenever you are.
- Voltage:(accessory kit) — intended for 12V electric fan installations (compatible)
- Mounting Hardware Included:Complete mounting kit (clips, ties, springs, foam pads) included
- Universal Fit / Application:Universal mounting for electric fans and transmission coolers
- Reversible Push/Pull Operation (or Supports Push/Pull):N/A for fans (mount kit supports push or pull fan installations)
- Temperature-Control/Relay Kit Included (Thermostat or Relay):Accessory mounting kit only (no thermostat/relay)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):ABS plastic clips/ties and stainless springs; foam pads for protection (heat-resistant components for mounting)
- Additional Feature:Vibration-dampening springs
- Additional Feature:Sponge adhesive pads
- Additional Feature:Supports two installations
Dual Electric Radiator Fan Relay Thermostat Kit
In case you need a reliable way to run two electric radiator fans without fuss, this Dual Electric Radiator Fan Relay Thermostat Kit is a great choice for DIYers and mechanics who want straightforward, durable control. You get a 40A relay, labeled wiring pigtail, OE style temp switch, adapter, waterproof fuse holder, connectors, ring terminals, and a clear wiring diagram. Wire colors match functions for easy hookup and the temp switch grounds through engine threads. It runs two medium or low profile fans and fits common fan sizes. Use 10 AWG on relay pins for heavy loads and follow the wiring diagram.
- Voltage:For 12V fans (wiring kit designed for 12V systems)
- Mounting Hardware Included:Wiring kit includes ring terminals, connectors (mounting hardware for wiring/relay)
- Universal Fit / Application:Compatible with 10″–16″ electric cooling fans (universal wiring kit)
- Reversible Push/Pull Operation (or Supports Push/Pull):Supports wiring for two fans in push/pull configurations (wiring for two fans)
- Temperature-Control/Relay Kit Included (Thermostat or Relay):Full dual-fan relay thermostat wiring kit included (40A relay, temp switch, fuse, wiring harness)
- Heat/Corrosion Resistant Construction (Plastic Blades / Durable Materials):Wiring components (fuse holder, terminals) designed for automotive environment (corrosion-resistant terminals and waterproof fuse holder)
- Additional Feature:40A relay included
- Additional Feature:Color-coded wiring
- Additional Feature:Waterproof fuse holder
Factors to Consider When Choosing Auxiliary Electric Cooling Fan Kits
At the time you’re choosing an auxiliary electric cooling fan kit, pay attention to fan size and airflow because that determines how much cooling you’ll actually get and whether it fits your space. You’ll also want to check power and current draw alongside thermostat and relay control so the electrical system can handle the load and the fan turns on at the right moment. Finally, consider mounting and clearance plus build quality and durability so the kit installs cleanly, lasts through rough use, and gives you reliable peace of mind.
Fan Size And Airflow
Although you could suppose a bigger fan always fixes overheating, choosing the right fan size and airflow requires a few careful checks so it actually works for your car. You’ll find larger diameters usually move more air, for example a 16″ fan often hits about 1000 CFM while a 12″ fan could be near 800 CFM. Blade count, shape and pitch matter next, because S curved or wide blades change how much air you get and how well the fan pushes or pulls through a radiator. Also watch fan thickness and motor size, since slim fans save space but give less CFM. Keep in mind CFM is measured in free air and drops when mounted, so pick a higher rated fan than your minimum need.
Power And Current Draw
Consider about power and current draw like the electrical heart of your fan system; it tells you how much juice the fan needs and how to wire it safely. You’ll check the fan’s power rating in watts and voltage initially. Most auxiliary fans are 12V and sit around 80 to 120 watts. Next, compare current draw in amps at 12V. Slim fans often draw 6 to 11 amps each. That number guides fuse, relay, and wire sizing. Use wiring and relays rated about 25 to 30 percent above the expected continuous current. Match fuse size to normal draw and place the fuse near the battery. For dual fans, plan separate circuits or thicker wiring like 10 to 12 AWG to avoid voltage drop and overheating.
Mounting And Clearance
Mounting and clearance are the foundation of a trouble-free fan installation, so you’ll want to measure and plan before you buy. You should measure the radiator or condenser face and add at least the fan diameter plus 1 to 2 inches on each side so blades clear hoses and shrouds. Also check total fan thickness, usually 2.3 to 3.3 inches for slim fans, and include mounting hardware depth so nothing hits engine parts, A/C lines, or the hood. Keep at least 1 to 2 inches between blades and the radiator core to avoid rubbing and extra noise. Verify mounting points or space for brackets, tie straps, and vibration dampers, and plan cable routes so wiring won’t be pinched or near high heat.
Thermostat And Relay Control
As soon as your engine gets hot, the thermostat switch and relay control how and at what point the electric cooling fans kick in, so you want those parts to be right for reliable cooling and peace of mind. Pick a thermostat switch with clear on and off temps so fans run at the threshold you trust. Match the sensor thread and metal-to-metal ground so it reads actual coolant temperature where it matters. Use a relay and wiring sized for the total fan amps, add margin, and choose proper gauge wire to avoid voltage drop. Fit a 40 A or larger relay or dual relays with a fused battery feed and inline breaker. Prefer labeled pigtails with ring terminals and clear diagrams so installation stays simple and safe.
Build Quality And Durability
You got the controls right, and now you want the parts to last. Start choosing fans and housings made from heat resistant, corrosion resistant plastics or metals with temperature ratings. Next, inspect blade design and balance. Fans with ten or more blades, S curved or wide profiles, and a balance mechanism cut vibration and spare the motor and bearings. Check motor power and current draw versus duty cycle. Higher watt motors with stated amp draw at 12V and sealed bearings stand up to continuous use. Prefer sealed electrical components like waterproof connectors and corrosion resistant terminals, plus vibration damping mounts or springs to protect connectors and frame. Verify thermostat and relay hardware is sturdy, with metal bodied switches, 40A plus relays, inline circuit protection, and proper wire gauge.
