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Haldex · Air System
900-54-088
In stock · ships from Knoxville
This is a manually operated 2-way air valve with a knob, typically installed in the cab or on a control panel of heavy-duty trucks, trailers, and buses.
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Verified fitment for 4 applications
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All confirmed applications for this part number.
Other applications
Other applications
Universal manual pilot valve used across many makes and models for suspension dump or accessory control; no vehicle-specific fitment is required.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 16.
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It sends a pilot air signal to suspension dump valves or other air accessories—when you turn the knob one way it supplies pressure, and turning it the other way vents the signal. The valve is self-relieving, so it automatically exhausts the downstream air when shut off, preventing trapped pressure. Replace it if the valve leaks, becomes hard to turn, or fails to maintain pressure, which can cause unintended suspension operation.
Part Number: 900-54-088
VALVE, 2-WAY W/KNOB
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
