Product Details: Equip your semi to be Ready for the Road Ahead™, with the Bendix ATR-6™ Series 1/2-14" NPT 12V Traction Relay Valve, a key component to provide advanced braking and traction control. By remotely controlling the rear air brakes of a vehicle, this replacement valve is able to provide superior traction control to increase safety and efficiency. Built with a rugged body to perform exceptionally well in high-pressure settings and temperatures ranging from -40 °F to 185 °F. FleetPride is your First Click in Heavy Duty®.