Image is for illustration purposes only. Actual part may vary.

177.13B626

3/8 UNION

This is a 3/8-inch brass push-to-connect union fitting used to join two sections of nylon air brake tubing. It's commonly found in air systems on heavy trucks and trailers, allowing quick, leak-free connections without wrenches or clamps. You replace it when a fitting becomes damaged, corroded, or when modifying air lines.