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Post Onsite · Hardware & Fasteners
40BAL
In stock · ships from Knoxville
This is a 4-inch aluminum cam and groove (camlock) coupler, commonly called a 'Part B' coupler.
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Not vehicle‑specific; fits any standard 4" Part B camlock coupler connection with male NPT thread.
Part data verified against 5 catalog sources
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It has a female quick-connect end that mates with a 4-inch male adapter (Part A or Part E) and a male NPT thread on the other end for screwing into a pipe or hose fitting. Cam arms with stainless steel handles and a Buna‑N gasket provide a secure, leak‑tight seal that can be connected and disconnected by hand without tools. These fittings are widely used on tanker trucks, fuel delivery hoses, agricultural sprayers, and industrial liquid transfer systems to allow fast hose changes or clean‑outs. A coupler is typically replaced when the gasket is worn, the aluminum body is cracked or corroded, or the cam arms no longer lock reliably, risking spills or pressure loss.
Part Number: 40BAL
4' ALUM COUPLER X MALE THREAD
Unit: ea
Dealer: Post Onsite
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