Electric Fan Relay with Thermostat

The Electric Fan Relay with Thermostat from QuickCar Racing Products is a precision cooling control module engineered for street and track vehicles that demand reliable, efficient engine temperature management. This integrated relay-thermostat assembly eliminates the need for separate components, streamlining your cooling system wiring while maintaining precise thermal regulation. Whether you're running a carbureted classic, a naturally aspirated performance build, or a turbocharged street machine, this relay handles the critical task of activating your electric cooling fan at the exact moment engine coolant reaches your target temperature, preventing heat soak and reducing parasitic drag from mechanical fan clutches.

Built by QuickCar Racing Products—a trusted name in race-proven electrical systems—this thermostat relay combines a solid-state switching mechanism with an adjustable temperature sensor, allowing you to dial in fan engagement between approximately 160°F and 200°F depending on your specific coolant setup and engine requirements. The compact design (7.5 x 1.5 x 8.15 inches) mounts easily in your engine bay or firewall area, and the lightweight aluminum housing (0.73 lbs) ensures minimal thermal mass while providing durable environmental protection. The relay handles standard 12-volt negative-ground systems and works with most universal electric fan setups, using a simple three-wire configuration that reduces complexity versus traditional relay banks and eliminates confusing multi-relay wiring diagrams.

Enthusiasts rebuilding cooling systems for fuel-injected conversions, vintage hot rods, and modern performance cars benefit most from this module's simplicity and reliability—especially in tight engine bays where space is at a premium. Installation requires only a 12-volt power source, engine coolant temperature probe input, and a wire to your fan motor, making this an ideal choice for DIY builders and professional shops alike. Compatible with universal electric fans rated for 12-volt DC operation, this relay delivers consistent switching performance whether you're idling at a car show or pushing hard on the highway, ensuring your cooling system responds exactly when needed without unnecessary cycling that wastes electrical energy.