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Haldex · Air System
TRKN28601
In stock · ships from Knoxville
This is a Full-Function 2 (FF-2) trailer valve for air brake systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
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Valve is designed for trailer installation, not the truck tractor. Listed as 'For Mack' in some aftermarket catalogs; physically fits any trailer with a compatible air brake layout.
Part data verified against 5 catalog sources
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It combines service brake control, spring brake control, pressure protection, and anti-compounding into a single composite valve. You replace it when the trailer experiences air leaks, delayed brake release, or fails to build proper air pressure to the spring brakes. It’s a common replacement for many heavy-duty trailers, especially those running spring brake chambers.
Part Number: TRKN28601
FF TRAILER VALVE
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system
