Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Haldex · Air System
KN28510
In stock · ships from Knoxville
This is an RG-2 air brake relay valve manufactured by Haldex.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Universal fit
Universal component for tractor and trailer air brake systems. Mounting hole spacing is 1.5 inches on center. Specific vehicle fitment is not available, but it fits standard configurations matching the port sizes.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
Its job is to speed up the application and release of your service brakes on a tractor or trailer by quickly relaying air pressure from the supply tank directly to the brake chambers when you press the pedal. You typically replace your relay valve when it starts leaking air, gets damaged, or if your brakes are applying or releasing sluggishly. This particular model has a compact design, a 90-degree control port, and comes with two delivery ports.
Part Number: KN28510
RG-2 RELAY VALVE
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
