Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Post Onsite · Hardware & Fasteners
120A-6-4
In stock · ships from Knoxville
This is a brass reducing adapter with a 3/8 inch female NPT thread on one end and a 1/4 inch male NPT thread on the other.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It allows you to connect a 3/8 inch female pipe fitting to a 1/4 inch male pipe fitting. Commonly used in heavy-duty truck air brake, fuel, oil, and pneumatic systems. Install it when you need to reduce a line size or adapt a component.
Part Number: 120A-6-4
3/8X1/4 REDUCER
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more