Engineered for Integrated Safety: The WAB 4725002230 ABS/ATC Valve Package. This is one genuine WAB 4725002230 ABS/ATC Valve Package, an essential multi-function unit for the air braking and traction control systems on heavy-duty commercial tractors. This package integrates the core functions of a service brake relay valve and the electronic ABS modulator valves with the Automatic Traction Control (ATC) function. The 4725002230 is specifically designed for the rear axle of a tractor with 4S/4M or 6S/4M wheel speed sensor configurations. It operates on a 12V electrical system and includes the critical 5.5 PSI backpressure valve necessary for system integrity. This combination reduces plumbing complexity, enhances system response, and ensures compliance with modern safety standards (like FMVSS 121). It uses a reliable Bayonet-Style Connector for electrical hookup. Cross-references of the product: WACO 472 500 223 0, Mertor S4725002230, Freightlner TDAS4725002230, Mak 8235-S4725002230, Vlvo S4725002230, and Pacar 4725002230. The superior design of WAB 4725002230 provides unparalleled control over wheel slip during both braking (ABS) and acceleration (ATC), optimizing safety and tire life. Characteristics: ⦁ Part Type: ABS/ATC Modulator Valve Package (Integrated Relay Valve) ⦁ OEM Part Number: 4725002230 ⦁ Voltage: 12 Volt DC ⦁ Crack Pressure: 5.5 PSI (0.38 bar) ⦁ Max Operating Pressure: 159.5 PSI (11.0 bar) ⦁ System Compatibility: 4S/4M, 6S/4M (for D & E Version ECUs) ⦁ Connection Type: Bayonet Coupling (DIN 72585) ⦁ Application: Rear Axle Tractor