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This universal coupler lock protects your trailer from towaway theft. Lock codes to your vehicle's ignition key, and it's nearly impossible to pick or bump. Included lock, base plate with ball, and shackle fit most coupler and latch styles.
Features:
Specs:
Note: BOLT locks permanently code to only 1 vehicle. They cannot be re-coded or re-keyed.
To install this lock simply insert the ball into the coupler's ball socket. Insert the collar into the base plate until it's snug against your trailer latch and the holes align with the holes in the base plate. Insert the lock through the holes in the base plate, and use your vehicle's ignition key to secure it.
When you insert your own key into the cylinder, spring-loaded plate tumblers move up and down until they are matched exactly to that key. The first time the key is rotated, the cylinder is uniquely coded to that key. When the key is removed, the cylinder moves into the locked position. When the key is turned again, it will rotate to the unlocked position.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
I already owned one of these for my boat now I’m putting a second one on my utility trailer and I have one for my trailer hitch on my truck firm believer always nice to have only one key for all my toys
Good news is that it works like all B.O.L.T. locks I have with one key. Bad news is that there is no way to seat the cylinder COMPLETELY against the hitch, which leaves a small gap that a thief could get a hacksaw into. Still, the pros outweigh the cons.
Easy to use, works perfectly gets rid of unnecessary keys on ur key ring.
Excellent quality! Superior security! I have Bolt products on boat trailer and cargo trailer. The feature that all my Bolt products are all keyed to my ignition key sure comes in handy!
Very prompt
Well made, like the one key system.
Convenient and well built.
Super convenient keyed to my vehicle’s entry key.
Works well with the trailer. It can be a little difficult to put on, lining up the holes.
I ordered while we were out of town showed up on time. Very easy setup with in 5 minutes I had opened the box and had it installed on my trailer. Looks like a very solid product.
Wow! Was I surprised when I opened the box. A very heavy duty, well made locking system. I am very impressed. Easy set up. Good instructions. I will recommend this to everyone I know.
This product works very well and you can take the safety chains and cross them and then put the clamp down and lock it in place
These are the BEST!!! SO easy to put on and off since I don't leave the hitch on my truck all the time. And I LOVE the fact that it molded to my truck key so I do NOT need to carry an additional key with me!
So far so good. I have three trailers for these. Fits all well and secures each with a tight fit. Well built and will last a long time. Great product!
I was very impressed with the quality of the BOLT trailer coupler lock. Unfortunately, the design of the coupler on my trailer will not allow the lock to fit as designed, making it useless for securing my trailer. However, I am very pleased with the other BOLT products bought on the same order will use them regularly.
This trailer coupler lock seems to be very easy to install very easy to make your key and seems very secure pretty impressed etrailer comes through again!!

Russ
10/1/2021
Amazing durable products cant steal my trailer
We've tried a TON of different coupler locks for our 2019 Jayco RV with an underslung coupler, and we ended up having to send them all back because they're too narrow. A year or two ago, after giving up on all the other brands from all the other sellers, I got on the phone with an e-trailer rep, and he dug through the available options to find one wide enough, and this one works!
Since it's keyed to the tow vehicle key, and since we sold our previous tow vehicle, I just bought another one because I KNEW it would fit, and it does. So thankful for this lock and for etrailer's help.
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Bud
12/29/2023
The Bolt coupler lock is stout, easy to use, and the best Ive had experience with. With Bolt on duty, I know my towed is secure and will remain in place!