SKU: HLYFB403
UPC: 090127002896
MPN: FB403
The Holley Electric Relay Kit for Frostbite Fan/Shroud System is designed for automotive enthusiasts and professional mechanics who require dependable thermal management in high-performance and street rod applications. This relay kit effectively addresses the challenge of controlling high-amperage electric cooling fans without overloading factory wiring or ignition circuits.
Engineered to handle the electrical demands of electric cooling fans that typically draw 25–40 amps at full speed, this relay kit isolates the high-current fan circuit from the vehicle's ignition and battery charging systems. This design protects against voltage sag, ensuring that the Frostbite fan operates at maximum efficiency from cold start to sustained high-load conditions. The compact design and quality relay contacts minimize voltage loss, resulting in faster fan response and improved heat dissipation.
This relay kit is ideal for those upgrading cooling capacity on classic builds or installing custom radiator setups. By routing full battery voltage directly to the motor, the relay maintains consistent CFM output and thermal performance, making it a valuable addition for any high-performance vehicle.
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