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Haldex · Air System
905-55-100
In stock · ships from Knoxville
This is a Haldex PR Plus height control valve (HCV) used on heavy‑duty trucks and trailers with air‑ride suspension.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Direct replacement for SAF Holland suspension height control valves that use a normally‑closed dump function. Commonly used on trailers and on Volvo tractors with air ride. Verify lever arm style (5.5" fixed with vertical adjustment) and port sizes match your installation.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 13 of 13.
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It automatically adjusts the air pressure in the suspension air springs to keep the vehicle at a constant ride height regardless of load changes. This version includes a normally‑closed, low‑flow dump valve that releases air to lower the suspension when the dump pilot port is pressurized, and it is a direct replacement for SAF Holland suspension systems that use an automatic dump function. The ceramic seal technology inside gives it a tight dead zone and long service life even in dirty, high‑vibration environments.
Part Number: 905-55-100
VALVE, HEIGHT CNTRL
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
