Meritor S4725003200 ABS Modulator Relay Valve Front Axle 12V 4S/4M

The Meritor S4725003200 ABS modulator relay valve (also called an ABS valve package or tractor ABS relay valve) is a front axle air brake component for heavy-duty trucks and tractors. It is built around the WABCO ABS platform and is also listed under the WABCO number 472 500 320 0.

Key Features:

• Front axle ABS modulator relay valve
• 12V electrical system
• 1.0 psi crack pressure
• 4S/4M ABS configuration (four sensors, four modulators)
• Also referenced as WABCO 4725003200 and 472 500 320 0
• UPC 680502070390

This valve controls air pressure to the front axle brake chambers and modulates it during ABS events. That helps the vehicle keep traction and steering control under hard braking. It is a replacement part for commercial truck air brake systems.