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.

PT Coupling · Hardware & Fasteners
40CX30AAL
In stock · ships from Knoxville
A 4-inch aluminum cam-and-groove (cam-lock) coupler combined with a 3-inch male hose shank adapter.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Fits standard 4-inch female cam-lock on one end and accepts a 3-inch hose clamped over the male shank on the other. Not specific to a vehicle make or model.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 6 of 6.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It provides a quick, secure connection for hoses carrying water, fuels, oils, and other liquids. Commonly found on tank trucks, fuel delivery lines, and agricultural sprayers. Replace the coupler when it becomes worn, leaky, or the cam arms no longer lock tightly.
Part Number: 40CX30AAL
4 COUPLER X 3 ADAPTER
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more