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Haldex · Air System
HDXKN28600
In stock · ships from Knoxville
This is a Haldex FF2 Full Function Trailer Valve, a multi-function air brake control valve commonly used on heavy-duty tractors and trailers.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Commonly used in FMVSS-121 compliant air brake systems; plumbing changes may be needed when replacing other valves.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 26.
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It combines a pressure protection valve, one-way check valves, a spring brake valve with quick release, and a four-port relay valve in one unit. It prevents spring brake compounding and gives priority to service brakes, helping you stop safely. Replace it when it leaks, fails to maintain pressure, or causes brake imbalance or slow release.
Part Number: HDXKN28600
HALDEX VALVE FF2
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system
