Description
The Haldex AL430614 is a Full-Function ABS (FFABS) trailer modulator valve with integral spring brake control, supplied as a complete relay-style assembly with pre-installed reservoir nipple. Service-brake-priority 4-port design with 3/8 in control, supply, delivery, and spring-brake ports; 1/2 / 3/4 in reservoir nipple. Direct supersession for Haldex AL430611 and equivalent N4306-series numbers; the OE reference is N4306CD.
Signs You Need a New Trailer ABS Modulator Valve
- ABS warning lamp stays on after the bulb check
- Active fault codes for modulator valve, supply pressure, or solenoid circuits
- Slow brake apply or release at the trailer axles
- Air leak audible at the valve body or port fittings
- Failed self-test on power-up — valve does not cycle
Specifications
| Manufacturer | Haldex |
|---|---|
| Part Number | AL430614 |
| Part Type | FFABS Trailer Modulator Valve (Service Brake Priority) |
| Voltage | 12V |
| Delivery Ports | 4 × 3/8 in |
| Spring Brake Ports | 4 × 3/8 in |
| Control / Supply Ports | 3/8 in (filtered) |
| Reservoir Port | 1/2 in / 3/4 in nipple, swivel + lock-nut |
| Crack Pressure | 4.0 PSI |
| OE Reference | N4306CD |
Cross References
This trailer ABS modulator valve replaces or is equivalent to the following part numbers:
- Haldex (AL series): AL430610, AL430611, AL430615, AL430617, AL430619, AL430644
- Haldex (OE / N series): N4306AD, N4306AE, N4306AG, N4306AJ, N4306AL, N4306CD, N4306DD, N4307CB, N4307GB
Applications
Service-brake-priority FFABS valve for 12V trailer ABS systems. Used on:
- Tandem and tri-axle van and reefer trailers with Haldex 4S/2M FFABS
- Flatbed and lowboy trailers with Haldex full-function trailer ABS
- Tank trailers and dump trailers spec’d with Haldex air brake systems
The ECU and mounting bracket may need to be transferred from the original valve. Verify control logic (service brake priority vs. spring brake priority) and voltage before ordering.
