Product Details: Ensure your semi truck is Ready for the Road Ahead™ with an efficient distribution of hydraulic fluid, with the Bendix SV-1 ™ 42 psi Synchronizing Valve. Thanks to its sophisticated design, this replacement valve is able to evenly divide air between the front and rear brakes of the vehicle at once. Built with an easy to install design to fit into a wide variety of existing systems. FleetPride is your First Click in Heavy Duty®.