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Quantity
1
Description
Description
Model 2517-D was designed to fit Stamped Demco style 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 trai...
Reviews
4.7
174 ratings
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Demco Coupler Lock
I bought (2) of these, (1) for my car trailer and (1) for my snowmobile trailer. They both have Demco Couplers. I was able to get them with the same key which is helpful. Very happy with them!!!
T
Thomas · 8 days ago
Perfect Solution
Perfect fit, stows safety chains as well. "Bomb-proof" construction materials. Extremely happy with the fit and quality. Thank you Proven Industries for creating design & quality where all others fail!
G
Greg · August 24, 2026
Model 2517-D
Very happy with my Proven industries trailer lock. I sent a picture of the coupler of the trailer, and Proven technical advisor emailed me the correct model for my trailer. This is the second trailer lock so I had the lock coded to the frist lock.
