Stepping up to a 15 inch diameter keeps things compact while moving serious air for daily driving, hot-weather A/C, or towing. Great for replacing a clutch fan to free up power and improve fuel mileage, just measure your shroud and depth to confirm fit. Choose puller or reversible setups to match your radiator, and note that some options include their own thermostat and sensor while others omit mounting hardware.
They typically use their own thermostat and sensor, so the factory temperature gauge remains unchanged. Follow the included wiring diagram and route the sensor to the coolant path as instructed. Plan power and ground runs carefully and protect wiring away from heat and moving parts.
A puller behind the radiator is a common choice after removing a clutch fan. Check clearance inside the shroud and verify the fan's reversible capability if you need the opposite setup. In hot climates or with A/C, confirm airflow needs are met and watch temps at idle; inadequate low rpm airflow can lead to rising temps.
Match airflow to your needs and radiator size; some look for more than 2000 CFM. Verify shroud fit and that there's room for the fan depth. Watch for low rpm airflow demands when idling with A/C. If converting to electric, plan the electrical load and fuse sizing appropriately.
Many kits include the fan, motor, and a thermostat controller. Mounting hardware isn't always included since installation varies by application, so plan brackets or mounts for your setup. Review the instructions before starting to confirm what you'll need for your vehicle.
Not necessarily. Some 15 inch replacements aren't a custom fit, so holes may not line up and thread pitch can differ. Measure your shroud and mounting pattern before ordering. If your current fan or shroud is cracked or aged, consider replacing the whole assembly to avoid chasing fitment issues.
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