WABCO Tractor ABS Relay Valve

The 170.4006110340OE / WABCO Tractor ABS Relay Valve (Automann) is engineered for heavy duty tractor applications, serving as a critical component in the ABS (Anti-Lock Braking System). Its primary function is to relay pneumatic pressure commands between the ABS controller and the brake chambers, maintaining quick response and consistent modulation under varied load and road conditions. Built with high quality materials and tight tolerances, this relay valve helps prevent wheel lock, improves brake stability, and supports long service life with minimal maintenance. Wofford Truck Parts supplies this valve with assurance of OEM cross compatibility and expert support to ease installation and system integration. Whether you operate fleet tractors or long-haul rigs, this relay valve helps maintain safe, predictable braking performance across diverse operating environments.