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Use this sturdy, rustproof aluminum coupler lock with high-visibility yellow color to help prevent trailer towaway theft. Fits trigger-style, 2-5/16" ball couplers with flat lips. Can be keyed alike to match other etrailer locks.
Features:
Specs:
Note:
This heavy-duty coupler lock obstructs access to your trailer coupler to prevent would-be thieves from hitching your trailer to their tow vehicle and driving off with your gear.
The lock is constructed of extruded, tempered aluminum, making it strong and durable. The lock housing features a double nickel chrome finish, and the shuttered keyhole protects the inside of the lock from the elements. Complete with a yellow powder coat finish, this high-visibility coupler lock is both sturdy and rust resistant. And the bright color provides additional theft deterrent.
To install this lock on your coupler, insert the key and rotate it to release the locking pin. Slide the lock body onto the flat lip of your trailer coupler. Push the locking pin into the hitch ball socket to engage, rotate the key back to lock the pin in place, and remove the key.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews

Wayne
5/10/2026
Works great!

Mild B.
6/15/2025
Still working fine. I use it on my utility trailer. We sometimes leave for several days at a time. Having this lock on it gives me a level of security that itll still be there when I get home, something I never had before!

Wade
3/9/2024
Great product. I feel it’s a great deterrent for a would be thief. Bright color tells thief “not an easy target.”


Brady
12/14/2022
Still working great and looks almost new even after sitting outside for a year!
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Mike L.
3/19/2026
That sounds like a great solution, Wade. Two GSD's and a good coupler lock should go a long way to protect you from the mayhem caused by the local Crystal Methodists.... If you're up against very determined foes trying to take your stuff, a layered solution works best. The dogs will certainly help, but the coupler lock will as well. Do you have a nearby place you could chain the trailer to? The more obstacles you can put in front of them, the more likely they'll go steal from somebody else. Sad to say that.