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Automann · Air System
177.13B628
In stock · ships from Knoxville
This is a brass push-to-connect union fitting for 1/2-inch DOT nylon air lines used in heavy-duty truck and trailer air brake systems.
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Verified fitment for 5 applications
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All confirmed applications for this part number.
Other applications
Other applications
Universal aftermarket replacement for any truck or trailer using 1/2" DOT nylon air lines. Commonly used on air brake, suspension, and auxiliary air systems.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 14 of 14.
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It joins two lengths of air tubing to extend or repair a line without clamps or wrenches. You replace this union when a leak develops at the connection, when the plastic tubing becomes cracked at the joint, or when you’re rerouting air lines. A reliable brass union helps maintain leak-free brake system operation.
Part Number: 177.13B628
BRASS PLC UNION 1/2
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
