Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Haldex · Air System
171.90555100OE
In stock · ships from Knoxville
This is a height control valve (leveling valve) for heavy-duty truck and trailer air suspensions.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Replaces Haldex 90555100, SAF Holland 90560008, and others. Used on heavy-duty truck and trailer air suspensions.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 11 of 11.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It automatically maintains a constant ride height by adding or exhausting air from the air springs. The normally closed low-flow dump function releases suspension air pressure to lower the vehicle when the dump pilot signal is applied. The valve uses ceramic seal technology for durability and comes with push-to-connect fittings for easy installation.
Part Number: 171.90555100OE
OEM Haldex Height Control Valve
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system