Crossref: 1689785C91
Notes: All Ports 1/8” P.T. International Application
What is a Fan Clutch and why you need it?A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving the unnecessary load on the engine. As temperatures increase, the clutch engages so that the fan is driven by engine power and moves air to cool the engine.
Our International Fan Clutch Solenoid Application
OE-Genuine replacement solenoid valves with connectors meeting OEM specifications and avoid hassle during replacement.
Specifications:
Normally Open Inlet Port Size: Female 1/8-27 NPTF
Normally Closed Inlet Port Size: Female 1/8-27 NPTF
Outlet Port Size: Male 1/8-27 NPTF
Voltage: 12 Volts
Orifice Size Minimum: .047" minimum
Flow Rate @ 120 psi: 2.77 Standard Cubic Feet/min
Diode Installed: No
Wire Length: 6"
Replace: 1689785C91
Remember, for installation you should follow the Freightliner fan clutch solenoid wiring.How does fan clutch solenoids work?
When the engine is cool or even at normal operating temperature, the fan clutch partially disengages the engine's mechanically driven radiator cooling fan, generally located at the front of the water pump and driven by a belt and pulley connected to the engine's crankshaft. This saves power since the engine does not have to fully drive the fan.

However, if engine temperature rises above the clutch's engagement temperature setting, the fan becomes fully engaged, thus drawing a higher volume of ambient air through the vehicle's radiator, which in turn serves to maintain or lower the