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Haldex · Air System
KN28601
In stock · ships from Knoxville
The Haldex KN28601 is a full function trailer spring brake valve that combines multiple air brake control functions into one compact unit.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Verify port sizes (1/2" reservoir, 3/8" supply and delivery, 1/4" control) and 3.0 PSI crack pressure match your system. Commonly used on semi-trailers, but not specific to a particular make or model.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 12 of 12.
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It provides built-in pressure protection, anti-compounding, service brake priority, and quick release for both service and spring brakes, ensuring FMVSS-121 compliance. This valve is typically replaced when internal leaks, corrosion, or sticking valves cause brake drag, slow release, or failure to hold pressure, or when upgrading an older trailer to modern safety standards. It works with single or twin air tanks and is designed for common trailer air system plumbing.
Part Number: KN28601
FULL FUNCTION VALVE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
