Ensure your semi truck is Ready for the Road Ahead™ with seamless engagement of the fan clutch, with the Horton 12V NO / NC Solenoid Valve Kit. To prevent an engine's temperature rises above a certain level, this replacement valve works alongside the ECU to detect when an engine's temperature rises above a certain level, allowing the solenoid to activate the fan clutch and engage a cooling fan. Fashioned with a robust design to be suitable for heavy duty systems. FleetPride is your First Click in Heavy Duty®.