Cooling Fan Harness w/ Relay

The SPAL Advanced Technologies Cooling Fan Harness with Relay (model 195FH) is a complete engine cooling control system designed for vehicles requiring precise thermal management. This harness-and-relay assembly automatically engages the cooling fan at a calibrated activation temperature and disengages at a lower setpoint, maintaining optimal engine operating temperatures without manual intervention or constant cycling.

The 195FH activates the fan at 195 degrees Fahrenheit and shuts it off at 175 degrees Fahrenheit, providing a 20-degree hysteresis band that prevents rapid relay chatter and extends both fan and electrical component lifespan. The integrated 30/40 amp relay handles significant electrical loads, making it suitable for high-performance engines, aftermarket cooling systems, and vehicles with auxiliary cooling demands. The kit includes a 3/8-inch NPT temperature sensor for direct engine block mounting, a 1/2-inch NPT adapter for systems with different port configurations, and a complete wiring harness with properly sized connectors. This flexibility in sensor mounting options allows installation on a wide variety of engine platforms without requiring custom adapters.

Buyers typically choose the 195FH harness for high-performance vehicles, custom engine builds, track cars, and off-road vehicles where factory cooling systems prove inadequate or unreliable. Fabricators, engine builders, and restoration specialists rely on SPAL's thermostatic control systems to achieve repeatable, stable cooling performance across varying ambient and load conditions. The preset 195/175-degree setpoints suit most gasoline engines running aluminum cylinder heads or tight cooling circuits where precise temperature management prevents detonation and extends component longevity.

SPAL Advanced Technologies is recognized in the automotive cooling and electrical systems market for engineering-grade reliability and accurate temperature control across consumer, OEM, and motorsports applications. The 195FH represents a straightforward, field-proven approach to cooling automation that eliminates guesswork and improves thermal consistency.