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.
Bendix · Air System
279000BXW
In stock · ships from Knoxville
The 279000BXW is a Bendix TP-3 tractor protection valve. It normally mounts at the rear of the truck cab and is controlled by a dash-mounted switch to shut off air supply to the trailer, commonly used when disconnecting a trailer.
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.
Other applications
Other applications
Fits a wide range of makes/models through cross-referenced OEM numbers. Verify fitment using the cross-references listed for your specific truck.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 47.
Different year, make, or config? Get a confirmation against your truck in under a minute.
In an emergency such as a trailer breakaway or a severe air leak in the trailer system, the valve automatically isolates the tractor's air supply to preserve brake pressure. You replace this valve when it leaks, fails to hold pressure, or does not properly redirect air during a disconnect or emergency.
Part Number: 279000BXW
VALVE
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system
