Haldex FFABS Valve

The 170.AL430614 / Haldex FFABS Valve (Automann) is a full-function ABS control valve designed for trailer braking systems. It integrates both ABS modulation and spring brake control in one unit, offering 4-port ABS delivery, internal filtering at control and supply ports, and a preinstalled reservoir nipple with swivel and lock-nut for easier servicing. Operated at 12 V and calibrated for a 4.0 psi crack pressure, it prioritizes service brake circuits while preserving safe spring brake release. Its design supports vehicle stability, prevents wheel lockup, and helps manage air pressure transitions smoothly under braking. Automann’s version matches the original Haldex spec and is distributed by Wofford Truck Parts with support for installation and system compatibility. When installed properly, it extends system life, reduces maintenance, and ensures reliable ABS performance under varied trailer loads and driving conditions.