Description
The WABCO 4725001230 is a complete rear-axle ABS relay valve and modulator package for WABCO 4S/4M and 6S/4M ABS configurations on heavy-duty trucks. The kit ships with one WABCO 4725000072 relay valve and a matched pair of 4721950780 (left-hand) and 4721950790 (right-hand) solenoid modulators with bayonet-style connectors. Compatible with WABCO C, D, and E version ECUs.
Signs You Need a New ABS Modulator Valve
- ABS warning lamp illuminated on the dash
- Stored ABS fault codes (modulator or sensor related)
- Audible air leak from the modulator or relay valve
- Wheels locking up during braking on wet or slippery surfaces
- Uneven braking or pulling under hard application
Specifications
| Manufacturer | WABCO (ZF) |
|---|---|
| Part Number | 4725001230 (472 500 123 0) |
| Part Type | ABS Relay Valve / Modulator Axle Package |
| ABS Configuration | 4S/4M, 6S/4M |
| Voltage | 12V DC |
| Connector Type | Bayonet |
| ECU Compatibility | WABCO C, D, E version ECUs |
| Operating Temperature | -40°F to +185°F |
| Protection Class | IP66, IP69K |
Kit Includes
- Relay valve — WABCO 4725000072 (472 500 007 2) (qty 1)
- Solenoid modulator, left-hand — WABCO 4721950780 (472 195 078 0) (qty 1)
- Solenoid modulator, right-hand — WABCO 4721950790 (472 195 079 0) (qty 1)
Cross References
This part replaces or is equivalent to the following part numbers:
- WABCO: 472 500 123 0
- Meritor: S4725001230
- Freightliner / Daimler: TDA-S472-500-123-0
- Kenworth / Peterbilt: S472-500-123-0
- Volvo: S4725001230
Applications
This ABS modulator valve package fits WABCO-equipped rear-axle ABS systems on Class 8 heavy-duty trucks:
- Freightliner Cascadia, Columbia, Century, FLD
- Kenworth T680, T880, W900, T800
- Peterbilt 579, 389, 367, 386
- Mack Pinnacle, Granite, Anthem
- Volvo VNL, VNR, VHD
- International / Navistar heavy-duty trucks
Verify your ABS configuration (4S/4M or 6S/4M) and WABCO ECU version before ordering.
