With your trailer having a Bulldog coupler you will want to select one of the following locks.
Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-50-40D
EZ Lock Gooseneck Coupler Lock Combo # BLTL-53-40D2
AMPLock Trailer Coupler Lock # AMP69FR
The AMPLock Trailer Coupler Lock # AMP49FR you found is specifically for Atwood and flat nose couplers. view full answer...
For your Demco Channel Tongue Trailer Coupler for 2 Inch ball, # DM12717, I recommend the Master Lock 1-7/8, 2, and 2-5/16 Inch Trailer coupler Lock, # 377DAT.
Unlike the Fastway Universal Trailer Coupler Lock, like # DT25013, the Master Lock coupler lock will fit up into the trailer coupler and uses a sliding lock that secures over the Demco coupler lip.
The Master Lock trailer coupler lock is nickel-plated die-cast zinc that will resist rust and corrosion. view full answer...
The surround-type trailer coupler locks can only fit couplers that have a maximum width of 4-1/2". For a 5" wide coupler you will need to use a latch lock such as the Master Lock Trigger Style Coupler Lock for 1-7/8" and 2" Couplers # 605DAT or Trailer Coupler Lock # e98886 view full answer...
Since the Atwood AMPlock gooseneck coupler locks are no longer around your best option for a coupler lock will be a wheel lock to lock the trailer like the etrailer.com wheel lock part # 288-02020. This locks the trailer just as effectively as a coupler lock but is universal enough to fit basically any trailer out there or vehicle.
It's the best solution for gooseneck trailers like yours where there isn't a coupler lock that fits the coupler. view full answer...
I do have a recommendation for a coupler lock for your square coupler. I recommend the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # FA86-0015-318.
I recommend the Fastway Universal Lock because it is made to fit various couplers, including square ones like yours. Also, the bolted lock is internal to prevent prying and the key mech is rounded to make it more difficullt to pick.
Finally, it fits couplers up to 4" wide and the shackle is 6" long top to bottom,... view full answer...
I spoke with my contact at Master Lock about the Trailer Coupler Lock # 3784DAT. They were not certain if the lock is compatible with a 4-inch-wide coupler. But I am certain that the Fastway Universal Trailer Coupler Lock, # FA86-0015-318 Trailer Coupler Lock will work for you. view full answer...
The Atwood AMPlock Trailer Coupler Lock part AT89004 which is for overslung couplers (coupler on top of frame) has been discontinued by the manufacturer as with a lot of Atwood products as they are no longer in business. The Atwood AMPlock Underslung Coupler Lock part # AT89006 which is for underslung couplers (coupler on bottom of frame) is only available while supplies lasts and has also been discontinued by the manufacturer.
That said, you do not need to use an Atwood coupler lock if... view full answer...
If your RAM brand trailer has a collar-lock style coupler like the Bulldog Coupler # BD028444 yes the EZ Lock Trailer Coupler Lock # BLTL-20-40D would be an excellent choice as a trailer lock.
A more universal coupler lock that we offer is the Fastway Coupler Lock part # FA86-0015-318.
I attached review videos for both coupler locks for you to check out. view full answer...
I prefer to use the Master Lock Universal Trailer Coupler Lock # 379DAT as it works with a wide variety of trailer ball couplers from 1-7/8" to 2-5/16". We have the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT that includes this same coupler lock along with a coupler latch lock and receiver lock that are all keyed alike. view full answer...
There is not a trailer coupler lock with a cover for when the coupler is attached to your trailer; the only option for a lock in that instance is indeed a pin lock. If you are okay going that route, use the Adjustable Trailer Coupler Latch Lock - 1/2" to 2-1/2" Span # e98883. view full answer...
We have a heavy-duty coupler lock that will work for you, though the Atwood will not fit standard trailer couplers because the lock won't be able to clamp around the ball socket on a standard coupler. So instead, I recommend an option from Master Lock:
- Master Lock Coupler Lock # ML389DAT view full answer...
We have a variety of locks for your coupler, each with their own applications.
If you have a fat lip coupler, I recommend the etrailer Trailer Coupler Lock - Flat Lip, part # e98897. This yellow lock can fit a 2" coupler and is an immediate deterrent as the color quickly grabs attention. The lock has a stem that reaches into the coupler and can't be wiggled free.
If you don't have a fat lip coupler but still want a lock that reaches into the coupler, I recommend the EZ Lock Trailer Coupler... view full answer...
If the front part of your square-bodied coupler is approximately 3 inches tall, based on the inner dimensions of the lock the Blaylock EZ Lock Trailer Coupler Lock # BLTL-33 will work well for you. The # BLTL-33 has inner dimensions of 3-1/8 inches x 4-3/4 inches, when the bar is installed in the tallest position.
Another factor to consider is the location of your coupler latch. The key is securing the lock in the underside of the coupler while also covering the latch on top of the coupler... view full answer...
The HITCH-LOCK Trailer Guard Coupler Lock by Dutton-Lainson # DL13980 is a great option for both keeping your trailer coupler locked in place and deterred from theft. You of course need an external padlock like the Master Lock Padlock # ML1KA for this application.
If you are just looking for a lock when the trailer is not coupled, I recommend the Trailer Coupler Lock - Gorilla Guard for 2" Couplers # 63228 or # 63227 in 2-5/16 inch. view full answer...
I recommend using the Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set # 3794DAT for securing the Couper # CA-5210-B latch. Included in this lockset is 2 receiver hitch locks for 2" and 1-1/4" receivers as well as the adjustable coupler latch, trailer storage lock and carry bag. All locks are keyed alike to make is easier than fumbling with multiple keys.
The Coupler Lock # 2847DAT is if you only want the adjustable coupler lock. view full answer...
There isn't a way to get a Reese hitch lock with a specific key number on it, so the best we can offer are new, keyed-alike trailer hitch locks, depending on if you need a standard hitch receiver lock, a trailer coupler surround style lock, or a trailer coupler latch-style lock. You would just need to select the "Keyed Alike" option on the product page.
Trailer Hitch Receiver Lock:
- Trailer Hitch Receiver Lock for 1-1/4" Hitches # e98879
- Trailer Hitch Receiver Lock for 2" and 2-1/2"... view full answer...
The Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers # ML389DAT do not have a keyed alike feature so unfortunately I can't guarantee 3 of these keyed alike.
If you are interested in a coupler lock with the keyed alike option, I recommend the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # FA86-0015-318. This is a very versatile coupler lock compatible with most styles of trailer couplers. I've attached a video to assist and you can... view full answer...
For your keyed alike trailer couplers, I recommend the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers, # DT25013KA. This lock secures your coupler from the top and bottom. It is a noticeable theft deterant and it has a tube key lock cylinder to provide better security. It has an anti-drill pin and bolt blocked locking system prevents prying open the lock.
Other options for keyed alike couplers lockes are the Blaylock EZ Lock Trailer Coupler Lock for 2" Lipped... view full answer...
Since you have an underslung coupler with a 5-1/2" width you'll need a coupler lock that doesn't enclose the coupler like the Master Lock Trailer Coupler Lock # 377DAT.
Simply pop the ball into your coupler in slide the lock up against the coupler for a quick and easy peasy installation. view full answer...
Yes, the BOLT Trailer Coupler Lock # BL7032493 will fit with a Demco 2-5/16" trailer coupler. I have included an image below showing the lock used on a Demco coupler so you can see the fit with that style coupler. view full answer...
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