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Coronet · Air System
COR378-66
In stock · ships from Knoxville
This is a brass compression hose coupler with spring guard for 3/8 inch inner diameter DOT air brake hose and 3/8 inch male pipe thread (NPT).
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Verified fitment for 1 applications
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Other applications
Other applications
Fits any air brake system that uses 3/8 inch hose and matching pipe thread. Not specific to a particular make or model.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 14 of 14.
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It allows you to connect a flexible air hose to a rigid pipe fitting in a truck or trailer air system, and the spring guard protects the hose from kinking or damage at the connection point. You would replace this when the original fitting is leaking, corroded, or physically broken, or when rebuilding an air line assembly to maintain reliable brake operation.
Part Number: COR378-66
HOSE COUPLER W/SPRING 3/8
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
