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.

Betts Industries · Hardware & Fasteners
40397B
In stock · ships from Knoxville
A two-lever mechanical operator for cargo tank trailers. It mounts on the trailer and connects via cables to emergency shutoff valves on two compartments.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Direct replacement for Betts 40397B or OP9012EY universal mechanical operator. Fits trailers using the standard mounting pattern for this model.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 1 of 1.
Different year, make, or config? Get a confirmation against your truck in under a minute.
Pulling a lever closes the corresponding valve, and built-in fusible links automatically close the valves if exposed to fire. Typically replaced due to cable wear, lever seizure, or fusible link damage.
Part Number: 40397B
2-COMPARTMENT OPERATOR
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more