Brass Connector Male 1/4 x 1/8, 177.13B684A 177.11684A

This brass male connector adapts 1/4in tubing to a 1/8in male pipe thread (MPT) fitting, cross-referenced as 177.13B684A and 177.11684A. It's used on air brake and pneumatic lines on heavy-duty trucks and trailers to connect push-to-connect tubing to a threaded port.

This brass adapter is in stock and ships fast from United Truck Parts in Pennsylvania, along the I-78 corridor — reliable turnaround for fleet managers, owner-operators, and independent repair shops. Contact us with your part number or system details if you need help confirming fit, and ask about financing on larger orders.