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Quantity
1
Description
FITS 2'' BullDog Trailer Couplers (Puck Lock Included)
Model 2178-B was designed to fit 2'' BullDog style trailer couplers. This style trailer coupler is usually found on heavy duty trailers such as those used in commercial app...
Reviews
4.6
265 ratings
5
4
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1
Heavy Duty
The size and mass is a definite deterrent. I felt the lock I used before could be beat by a portable grinder. This lock would take too much time for a grinder. How do you rate a trailer lock? If you still have the trailer, was it because of the lock? Who knows. I would have given this a 5 star rating but I don't like how loose it fits. I feel a tighter fit would be good. But I still feel it will help me keep my trailer.
T
TIMOTHY · May 30, 2026
Coupler Lock Model 2178-B
Great quality , Heavy Duty and will definitely give me piece of mind also I paired it with the WL-200 wheel lock which is Heavy Duty and built to last between the 2 I should be well protected against thieves plus my German Shepherd will alert us if anyone get close to our house or driveway.
V
Vern · April 19, 2026
Great product. Definitely worth it. Heavier duty than I even thought.
