Radiator Fans - Derale

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Derale Radiator Fans for reliable cooling

Built to move serious air, Derale radiator fans come in electric and clutch designs, with low-profile options for tight clearances and setups that work as pullers or pushers on radiators, condensers, and transmission coolers. Match your space and power needs by verifying diameter, depth, rotation, and electrical draw—dual-fan shrouds can pull around 50 amps, while single-fan choices under 25 amps are available—and slight overlap on side tanks has minimal effect.

Use the fuse size called out in the instructions, like a 25 amp fuse when specified. Check cable length; you may need extra wire to reach your switch or relay cleanly. Confirm fan direction (pull or push) and blade rotation so airflow goes through the radiator or cooler the way you intend.

A puller setup gives better cooling capacity. Mount the fan behind the radiator when possible and verify you have room for the fan and shroud. If you mount up front in a congested grille area, expect a bit more hum since it's moving a lot of air. Confirm blade rotation matches your setup before final wiring.

Look for a single-speed puller that draws under 25 amps; a 16 inch around 2,100 CFM can be a good match. Verify the fan's max amp rating against your relay. Dual setups can draw about 50 amps total (25 amps each), which may require a higher-output alternator or increasing alternator speed at idle to prevent battery discharge.

Covering the side tanks may have a slight effect, but the system can still deliver plenty of airflow. Match overall dimensions carefully so the core stays well covered. For the best cooling capacity, choose a puller configuration and verify clearance for the full shroud depth.

Yes, Derale offers thin high-flow options that fit tight spaces. Measure from the radiator core to pulleys and accessories to confirm depth. Some units are thicker than most, so verify space before choosing a shroud. Aim for solid clearance to the water pump pulley and hoses once the fan is in position.