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WABCO · Air System
4006120100
In stock · ships from Knoxville
This is the WABCO Trailer ABS Electronic Control Unit (ECU) and modulator valve assembly, also sold as a 2S/2M (4S/3M compatible) retrofit kit (Easy-Stop).
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Retrofit kit; directly replaces the older WABCO R955320 ECU/valve. Fits trailers equipped with WABCO Easy-Stop ABS.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 6 of 6.
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It reads wheel speed sensor signals and electronically modulates air pressure to the brake chambers to prevent wheel lockup during hard braking, maintaining control and DOT compliance. You replace it when the original ABS ECU/valve fails or to upgrade older trailer ABS systems to the current generation.
Part Number: 4006120100
ABS ECU/VALVE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
