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Automann · Air System
177.13B686B
In stock · ships from Knoxville
This is a brass push-to-connect (PTC) male connector fitting used in heavy-duty truck air brake and pneumatic systems.
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Freightliner
Freightliner
Standard 3/8 inch push-to-connect air line fitting; commonly used across many heavy-duty truck makes. Verify thread size and type before installation.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 8 of 8.
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It connects a 3/8-inch air tubing line to a 1/4-inch male pipe thread port, providing a quick, tool-free, leak-resistant connection. These fittings are typically replaced when they become corroded, cracked, or start leaking, or when modifying air lines.
Part Number: 177.13B686B
3/8 X1/4 CONNECTOR
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system
