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OTR · Air System
OTR26020
In stock · ships from Knoxville
This is an RT4 multi-function trailer valve that controls the parking and emergency spring brakes on heavy-duty trailers.
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Other applications
Interchangeable with Haldex KN26020, Bendix K033228, and many other OEM and aftermarket RT4 valves. Fits most trailers with standard NPT port sizes.
Part data verified against 4 catalog sources
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It manages air reservoir charging and automatically applies the emergency brakes if the trailer supply line pressure is lost, meeting FMVSS-121 requirements. You typically replace this valve when it starts leaking, fails to hold pressure, or causes the brakes to drag or not release properly.
Part Number: OTR26020
RT4 MULTI-FUNCTION TRAILER VALVE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
