Image is for illustration purposes only. Actual part may vary.
EM34550
The EM34550 is a PAI tractor protection valve, a TP-5 type air brake component used on heavy-duty trucks. It controls the flow of air to the trailer brakes, transmits brake signals from the tractor to the trailer, and protects the tractor's air supply in the event of a trailer breakaway or sudden separation of the connecting lines. This valve is commonly replaced when it develops air leaks, fails to hold pressure, or causes the trailer brakes to not apply or release properly. It is compatible with multiple truck makes and is a direct replacement for Mack 745-288605 and other OEM numbers.
Universal fit
Standard TP-5 tractor protection valve; fits many heavy-duty truck makes including Mack, but no specific application list is provided. Commonly used in tractor air brake systems.
Part Number: EM34550
TRACTOR PROTECTION VALVE 288605
Vendor: PAI Industries
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
