The MS39189-2 Front Air Brake Valve Pipe Tee is a brass T-fitting used in the front air brake valve line of USGI M939 5-ton trucks. As a pipe-to-tube connector, it provides a junction between the brake valve pipe and the tube in the front brake circuit. This part carries the MS39189-2 designation and is intended for industrial and military automotive brake plumbing on M939-series heavy-duty trucks.
