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Automann · Air System
177.13B646
In stock · ships from Knoxville
This is a 3/8-inch brass push-to-connect union tee fitting for heavy-duty truck and trailer air brake systems.
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Verified fitment for 2 applications
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Other applications
Other applications
Fits any air brake system using SAE J844 3/8" OD nylon tubing. Push-to-connect design requires no special tools.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 17.
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It joins three 3/8" OD nylon air lines in a tee configuration, distributing air pressure for brake controls or accessories. The fitting is DOT-compliant and designed for SAE J844 nylon tubing, offering a secure, tool-free connection that resists pull-out. It is commonly replaced when air lines are repaired, extended, or when a leaking fitting fails.
Part Number: 177.13B646
BRASS PLC UNION TEE 3/8
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system
