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Haldex · Air System
AQ40525
In stock · ships from Knoxville
The Haldex AQ40525 is a 12-volt trailer ABS solenoid kit. It replaces the solenoid valve in your trailer's anti-lock brake system, which controls air pressure to the brake chambers during ABS events.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
The kit includes the DIN solenoid valve, a new check ball, O-ring, mounting hardware, and an adapter cable terminating in a 24mm electrical connector. Replacing a faulty solenoid can resolve ABS warning lights and restore proper ABS function, helping maintain safe braking performance.
Part Number: AQ40525
HALDEX SOLENOID
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
