BRASS ADAPTER 3/8 X 1/4

This brass adapter steps down a 3/8in NPT fitting to a 1/4in NPT connection. It's used on air, fuel, and lubrication lines on heavy-duty trucks and trailers where two different pipe-thread sizes need to mate. Brass construction resists corrosion and holds a reliable seal under vibration and pressure cycling.

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.