Description
Model 2517-D1 was designed to fit Demco style Cast trailer couplers. This style trailer coupler is usually found on heavy duty enclosed car trailers such as those used in show car transportation applications, Demco style trailer couplers will be found on enclosed car trailers, but in some cases trailer manufacturers offer Dem
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237 ratings
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Excellent Quality
I received my 2nd Proven Livk today, Installed it along with the bolt lock. Superb fit and finish, I feel much better about the security of my dump trailer. 5 STARS
S
Scott · 3 days ago
Awesome security solution for Demko Cast Coupler
J
JAMES · September 11, 2026
Fit perfectly
The customer service at Proven Locks was great. I sent them a picture of my coupler and they told me the model I needed. If fits perfectly.
