Yes, Sum75, it is the MasterLock. $19 is a good price, too.

FWIW: I've decided to go with the Megahitch Coupler Vault. Yes, as another poster stated, it is a pricier option, but it seems very well engineered and solidly built. Just placed the order yesterday and it's already in the mail. Coming from Oregon, just like my trailer will be next week! Funny coincidence. I wonder if it was manufactured here in the USA? If so, then certainly every dime is money well spent. Just my $0.02!

Is anyone using this lock?

Diversi-Tech Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers

it appears to be one that used to be branded Husky and i saw one on AS next to my new storage slot and it sure fits a lot better than my MasterLock that I had to modify to make it fit the lip of my coupler.

Hi, Goal

I think the downside to that style of lock is the exposed shackle, which is theoretically easier for a thief to pry loose or cut through. But as has been mentioned elsewhere in this thread (repeatedly, I think), a determined thief won't be stopped by any lock! Just hoping to make it a headache for them so they'll find an easier target. The one I ordered arrived a few days ago... I'm impressed by its heft.

AMPLock, they adversise themselves as The Ultimate Anti-Theft Lock!

Amplock, The Ultimate protection recommended by insurers

Thanks for the thoughts... did you order the one I asked about? I know that a determined thief is going to do what they are going to do but my storage space recommends coupler locks and i think a crowbar would probably remove my MasterLock one much quicker than someone could pry or cut this one off.

Mostly just hope that the crook would say... "well crap, one more thing I've got to deal with if I want to take someone else's property"..... because if they are criminals they are probably lazy as well as ignorant.

Coupler lock
 

Best coupler lock I ever heard of, was a simple sign, located in 3 to 4 windows.

WARNING

THIS TRAILER IS EQUIPPED WITHA MOTION SENSING BOMB.

ANY ATTEMPT TO MOVE IT WILL CAUSE THE BOMB TO EXPLODE, CAUSING COMPLETE DESTRUCTION WITHIN 150 FEET.

:D:lol:

Andy

I have been using MegaHitch Coupler Lock for the Airstream for more then a year.It works well. It is heavy duty and is tough to get to the lock section as it is on the back side and tought to see.

Another thumbs up for the MegaHitch. Here's an image of the Airstream model. As Urnmor mentioned, there's a barrel lock on the trailer side. It can be awkward to get to, but it would make it hard for a thief to get in there.

https://www.megahitchlock.com/images/...am%20With2.gif

Toll Free: (855) 888-MEGA

I've used a Masterlock MLK379 for years on my boat then Airstream. I don't know if it's the best one, but it has been 100% effective thus far. It did successfully prevent the utility company from moving my Airstream without my permission while I was at work. However, they probably didn't have the same mindset of the typical thief.

I paid less than $20 for it 8 years ago and it's been outside ever since. The chrome finish still looks good and it functions perfectly.

Just voice mail-still no response
 

The site is still up but no phone response or e-mail

Hmmm... Sylvr, does sound like the company has gone out of business. I went with the mega hitch coupler, seems really solid (it feels like it weighs 10lbs).

I use the MegaHitch coupler lock on my 2012 AS Flying Cloud. Watch the MegaHitch company produced YouTube video on how their lock is more effective than the other style hitch locks that are currently available.

The coupler/hitch lock (even the more expensive ones) will not prevent a determined thief. All they need is a pry bar or your safety chains to tow away *** unless you immobilize the tire/wheel(s). Suggest a short length of padded chain and an armored bicycle lock to tie either two wheels together or a single wheel and shackle ... much more effective IMHO.

The chains can just as easily be cut.

Removing wheels usually is the best, along with adding locking stud nuts.

That prevents reinstalling wheels.

Andy

Do you think the chain is adequate? I was thinking of supplementing my hitch lock with a trimax wheel lock- it's like the boot that police use.

Geez, looking over these posts I realized that I posted the wrong coupler lock. Here is mine. Got my DAT XXXX's messed up:

Interesting note. At the Sarasota WBCCI State Rally I learned that while traveling the trailer hitch latch should only be clipped shut with a clamp or something - not a lock. The reason... safety in the event or need of disconnecting the tow vehicle from the trailer. I just always used a padlock.

Out of curiosity, does anyone know someone who had their camper or trailer stolen while secured by a coupler or wheel lock (of any type).

The only folks that I know who had trailers stolen weren't using any kind of lock. Thieves just hitched conventionally and left.

Wheel lug nut locks assumed ...