bing tracking image
  1. Gooseneck Trailer Locks
  2. Blaylock Industries
  3. Gooseneck Base Lock
  4. RAM Couplers
  5. Keyed Alike
  6. Aluminum
Blaylock EZ Lock Gooseneck Coupler Lock - RAM Gooseneck Couplers - Aluminum

Blaylock EZ Lock Gooseneck Coupler Lock - RAM Gooseneck Couplers - Aluminum

Item # BLTL-55
Our Price: $64.55
You Save: 21%
Gooseneck Trailer Locks
Orders above $99 qualify for Free Shipping
Shipping Weight: 6 lbs
In Stock
Blaylock Industries Gooseneck Base Lock - BLTL-55
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it deters towaway theft of your gooseneck trailer that has a RAM coupler. Padlock sold separately. 1-800-940-8924 to order Blaylock Industries gooseneck trailer locks part number BLTL-55 or order online at Free expert support on all Blaylock Industries products. Great prices and Fastest Shipping for Blaylock EZ Lock Gooseneck Coupler Lock - RAM Gooseneck Couplers - Aluminum. Gooseneck Trailer Locks reviews from real customers.
  • All Info
  • Reviews (453)
  • Q & A (0)
  • Videos (2)
  • Photos
  • Why etrailer?

Blaylock Industries Gooseneck Trailer Locks - BLTL-55

  • Gooseneck Base Lock
  • RAM Couplers
  • Blaylock Industries
  • Keyed Alike
  • Aluminum

Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it deters towaway theft of your gooseneck trailer that has a RAM coupler. Padlock sold separately.


  • Coupler lock deters theft of your gooseneck trailer that has a RAM coupler
    • Combine with EZ Lock for gooseneck coupler set screw (BLTL-51-40D - sold separately), which secures the inner tube to the outer tube of your adjustable coupler
  • Heavy-duty bracket fits around the base of your trailer coupler
    • Narrow end slides over the coupler bracket near the handle
  • Steel pin slides through the bracket to secure the lock to your coupler
    • Padlock (sold separately) is required to secure pin in place
  • Aircraft-grade, lightweight aluminum construction is strong and resists wear and corrosion
  • Made in the USA


  • Application: most RAM gooseneck couplers
  • Overall dimensions: 11" long x 6-1/4" wide x 4-1/2" tall
  • Pin diameter: 3/4"
  • Weight: 7 lbs

After it has been secured, this Blaylock EZ Lock renders your trailer's cast base RAM gooseneck coupler inoperable, ensuring peace of mind. Simply position the lock around the base of your coupler, with the narrow end of the lock fitted over the coupler bracket near the handle. Then insert the 3/4" diameter steel pin through the holes in the lock and secure the pin in place with a padlock (sold separately).

For ultimate protection, combine this coupler lock with Blaylock's EZ Lock for gooseneck coupler set screw (BLTL-51-40D - sold separately), which secures your adjustable coupler's inner tube to the outer tube.

TL55 RAM Goose Neck Coupler Lock by Blaylock Industries - Padlock Not Included

Video of Blaylock EZ Lock Gooseneck Coupler Lock - RAM Gooseneck Couplers - Aluminum

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Blaylock EZ Lock Gooseneck Coupler Lock Review

Randy: Hey guys, Randy here at Today we're taking a look at a gooseneck coupler and set bolt lock kit. This is from Blaylock, it's called the Ez Lock. And it really is an excellent solution that's really easy to use.This setup's going to alleviate the problems that we have with trailers disappearing. Completely locks out the coupler, so it cannot be attached to, and then by adding the set bolt lock as well, nobody can remove your coupler.I highly recommend using these as a kit, because we could lock this, but in this particular setup, with an inch and an eighth wrench, I could take this coupler out. I can then put in my own coupler, and head down the road.

So using these together is an excellent solution; just keep that in mind.This particular style is going to be the one that we want to use for our TEMs, our Stallions, our Bulldogs, our Pro series, more the football shape. We'll talk a little bit more about that during the installation. But they also have the same design, it's going to have the single hole, for the Ram couplers. Those tend to be a lot thicker.So regardless of the coupler you've got, we're going to be able to get a good fit on there, and keep everything nice and secure. The entire lock here itself, along with the set bolt lock, are going to be cast aluminum.

They've been cleaned up really nicely, no sharp edges. The overall quality and feel is really really good. And of course rustproof aluminum, we're not going to have to worry about any corrosion.We've got our pin here that passes all the way through. You can see keeps everything nice and secure. And this is available with a Master locks, fully stainless steel, or if you already have your locks, you can just use your own, through that same hole, both on the bottom and on the top.Now something that I really like, these can be keyed alike.

So we're not going to have to worry about having two different keys for the two different ones, if you go that route.When we compare these to other coupler locks out there, instead of a set bolt lock, you can use a pass-through pin lock. We offer one from InfiniteRule. Now the thing to keep in mind, that's not going to work on this style of coupler, because it doesn't have a load pin.If you do have a load pin, you could go that route if you want. But it still leaves your coupler open. Gen-Y also has a coupler lock that goes on.

It's made out of a steel, rather than an aluminum. I like that this one's a little bit lighter weight, little bit easier to manage and get installed. But with that one, it's designed to work only with the Auto Latch, where this one gives us a wider variety of applications.Now as far as customer reviews, we've got a ton. I think it was over 500 reviews when I looked. And most of them are all positive. There have been a few instances where somebody was able to get by this. Let's face it, any lock that we use on a coupler, on a set bolt, a professional can get by it if they want. It's going to take them a lot more time though, with this in place, to hopefully somebody will see them, we can alert somebody, rather than this just being something they could back under, hook under and take off with.As far as the other reviews, people really like that it lasts a long time, they don't have to deal with rust, they don't have to deal with the corrosion. They don't have to worry, this is going to give you more peace of mind when you're at home and your trailer's at a storage. Or you got it parked out in the field, that it's going to be there when you get back.Now we're going to take you through the installation process of each of the different components. Of course both of the coupler locks are going to be extremely similar, but we will illustrate it on both the Ram style coupler, which has this really thick lip down here on the bottom. And we also have a Bulldog coupler I think that we're going to show you how it goes on.Basically on our Ram, these two tabs need to fit right up here, just like that. And we're going to rotate that up. Once we've got that rotated up, you're going to take the provided pin, that'll come through just like that. And then if you did get the option that has the lock with it, or if you decide on the lock, we use our Master lock to go on there, just like that. At that point, that's going to be nice and secure.When it's time to remove it, it's just going to be the opposite process there. Remove the lock and remove the pin, and begin to rotate that down, lift it up and out.Now the other style's going to have a couple of holes. That allows us to cover the gamut. But it does work with the Bulldogs, the TEMs, the Stallion types. Anything that's similar to this, it's going to have more of the two plate design, a little bit more of a football shape there.Pretty much the same on the installation. If your handle's like this, you can't have it turned to the side. That interferes, so leave that sticking straight out like that. Up and over, and then just pick whichever of the two holes that you need. The closer the better of course, we want that to be as tight as possible. And then at that point, again if you got the lock with it, just lock it up, get it secured.Now for the bolt lock that locks our coupler into place, we need to remove the bolt temporarily. Just so we can put our washer in behind it. I'm going to back that jam nut all the way out. Now this coupler doesn't have a pin. If yours doesn't have the pin, be sure to support it. If it does have a pin, it's not going to be that big of an issue.Now we're going to back this bolt all the way out, set that there for now. Once we've got that all the way out, just put our washer down and on, we'll just get it threaded back in, we'll get our coupler back in, set to the height that we want. Be sure that when you do this, that you do torque your set bolt back down. Generally the requirement for that's going to be 125 foot-pounds.So we've got that achieved. We're going to run that jam nut down right up against the washer, and then we'll torque that.Then once that washer's in place, you can see the groove right there. Slides right down and over. You're going to place our pin through. This little plastic spacer comes with it. I just keep it with the bolt, or with the pin, rather, and allow that to slide through. And if you look on the bottom there, you'll see we just need our lock to come through there.Now this really offers a little bit more of a challenge to get it in there, than what the actual coupler lock itself does. But this, once it's on, we're not going to take it back off, unless we want to remove our coupler, which really isn't that often.Now at that point you can see we've completely eliminated access to get in there. We shouldn't have to worry about our coupler going anywhere.

Customer Satisfaction Score:

Customer Reviews

Blaylock EZ Lock Gooseneck Coupler Lock - RAM Gooseneck Couplers - Aluminum - BLTL-55

Average Customer Rating:  4.7 out of 5 stars   (453 Customer Reviews)

Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it deters towaway theft of your gooseneck trailer that has a RAM coupler. Padlock sold separately.


Great lock to keep people from easily making off with your gooseneck. Would recommend to anyone.

Great product - easy to install and works at keeping your trailer from being taking!
Mark - 12/13/2022


I am using this on a Big Tex 22GN HD and it fits perfectly. I could not find out what type of coupler BIg Tex uses but I asked etrailer and they thought the same thing I did, that it looks like a Ram coupler. If you are looking for a lock for a Big Tex gooseneck look no further because this is the one.


Fit my Liberty trailer but doesn’t fit my pj with bulldog.


Well, it doesn't fit, too big, could hit it with a hammer and it would slide right off. Here are some pics. What now?

This coupler lock part # BLTL-55 is for ram gooseneck couplers. The coupler lock you need is part # BLTL-50 for a Bulldog gooseneck coupler part # BD0289250300.
-- Etrailer Expert Heather A - 10/19/2018


Good product, good price, and fast ship ping.


Useful, works great


Fits great on my big tex goose, now I'm able to comfortably leave my trailer at the job site.


Works as intended. No problems.


This lock is a great way to keep your trailer safe. Sad that you have to lock everything up but in this day and age you do!!


They fit a little loose but they will work. Great price and quick delivery.
I will buy from these folks again.


Great gooseneck coupler lock.
Easy to
use and works well!


I ordered one months before and it worked great for my Keifer horse trailer but the recent one didn't work on my Sundowner therefore I will be returning it. It was way to big for my gooseneck hook up.


Works great


Fast shipping. I am using this on my gooseneck trailer to lock the coupler into place


Does a great job

Great easy to install and remove
Bill - 11/01/2021


I have purchased both the TL50 and then the TL55 for my RAM coupler on my new GatorMade Trailer and both fit like crap! Don't be fooled this fits do sloppy I guarantee I can take a nail bar stick through the gap and snap it into! It costs half what I paid to return this junk do I guess I bought an expensive lesson. Run not walk away from purchasing this item!!!!!!!


The product arrived very quickly. Excellent quality aircraft grade aluminum. Locking mechanism fits great.

We love them. Our living-quarters horse trailers are a big investment for usand these locking devices provide peace-of-mind that no one can steal themwhen we are away. Solid, tough, easy to use.
Dave P - 08/16/2016


Light weight but very strong. My trailer has it attached at all times when trailer is not in use.


I have used these products for years, without fail. The service and communication has been fantastic and I thank you for that!


Love it. Fits perfectly!


great service and products


Great products, & service. Would definitely recommend!!


Just as advertised, fits perfectly and should keep the honest honest and at least slow down the crooked.


Simple, easy to use and highly effective product that does everything its supposed to.


Show More Reviews

See what our Experts say about this Blaylock Industries Gooseneck Trailer Locks

  • Height of Hooks on Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-55
    I spoke with my contact at Blaylock and the dimension you are looking for on the EZ Lock part # BLTL-55 that you referenced is 2-1/4 inches.
    view full answer...
    Image 1 for
  • Determining Type of Coupler Lock Needed for Gooseneck Coupler
    The physical difference in terms of appearance between various well-known gooseneck coupler manufacturers is hard to spot because they all are fairly similar. The biggest difference comes with the width of the coupler flange. The best way to determine which coupler lock is needed, the Blaylock EZ Lock for Bulldog/Stallion/Superior/T.E.M. # BLTL-50 or the EZ Lock for RAM # BLTL-55, is to take a quick measurement on your coupler's flange width. The EZ Lock # BLTL-50 has a width between...
    view full answer...
    Image 1 for Image 2 for
  • Trailer Lock Recommendation for Bulldog Gooseneck Coupler
    We have BlayLock coupler locks designed for Bulldog couplers, but they are not the style that you have. A better option that I can guarantee would work is a wheel lock like the part # RA-25. Even if your coupler is unlocked your trailer wouldn't be able to go anywhere with this lock installed. I attached an install video for you to check out as well.
    view full answer...
    Image 1 for Image 2 for
  • Parts Needed for Keyed Alike Lunette Ring, Gooseneck Coupler, and Hitch Ball Coupler Locks
    To add locks to your trailers that have the Lunette Ring Couplers (which connect to pintle hitch receivers) you will want to use 2 of part # BLTL-60. For your gooseneck hitches you will want to use 2 of part # BLTL-50 for Bulldog/Stallion/Superior/T.E.M. Gooseneck Couplers or part # BLTL-55 for RAM Gooseneck Couplers. To lock the set screw you will want the Blaylock EZ Lock Set Screw Lock on Gooseneck Coupler # BLTL-51. For the traditional trailer hitch ball couplers you will want to...
    view full answer...
  • Gooseneck Coupler Lock Compatibility
    Thank you for your photo of a gooseneck coupler lock which is similar to the Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-50. We do have gooseneck coupler locks for various brands of couplers. Locks # BLTL-50 and # BLTL-50-40D will fit on Bulldog, Stallion, Superior and T.E.M. gooseneck couplers. Lock # BLTL-55-40D fits Ram couplers only. With multiple trailers you will probably be best off using a multi-fit lock.
    view full answer...
    Image 1 for
  • Blalock EZ Lock that Could Fit B-B Gooseneck Trailer
    I don't have a way to determine what coupler your trailer has which is needed to determine what Blaylock gooseneck coupler lock fits but we have a few options. If you have a Bulldog, Stallion, Superior, T.E.M. you'd want the part # BLTL-50-40D, or if you have the RAM coupler you'd need the part # BLTL-55-40D. If you have something different let me know and I'll let you know what the best option would be.
    view full answer...
  • Options For Lock on Square Tube Gooseneck Coupler
    We do have a couple of options for locks on a square tube gooseneck coupler, though I was unable to find the brand of coupler for Quality Trailers. So what you can do is just take a look and see what brand you have, if you don't happen to know off-hand. That will allow you to choose the right coupler lock from the two below: - Bulldog/Stallion/Superior/T.E.M. Gooseneck Coupler: Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-50-40D - RAM Gooseneck Coupler: Blaylock EZ Lock Gooseneck Coupler...
    view full answer...
  • Best Gooseneck Coupler for a Bulldog Gooseneck PJ Trailer
    Since you have a Bulldog gooseneck coupler the correct lock for you is Blaylock EZ Lock Gooseneck Coupler Lock item # BLTL-50-40D. This lock has a narrower bracket feature than the Blaylock EZ Lock Gooseneck Coupler Lock item # BLTL-55-40D which is exclusively for Ram goosenecks.
    view full answer...
  • Gooseneck Coupler Lock for Kaufman Trailer
    The correct lock for your Kaufman gooseneck trailer is the Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-55-40D (which I confirmed with my contact at Kaufman). If you'd like a lock for the set screw as well then you can use the kit # BLTL-57-40D2 instead which includes both the lock for the coupler section and the set screw.
    view full answer...
  • Coupler Lock for an Unknown Gooseneck Trailer Coupler
    Without any identify marks on the coupler itself you would need to contact the trailer manufacturer to determine the brand and model used for that specific trailer. Although yours looks to be a RAM coupler more than anything else. If it is a Ram coupler then you can use lock # BLTL-55-40D.
    view full answer...
    Image 1 for
  • Recommended Blaylock Gooseneck Coupler Lock
    Thank you for the photo of your coupler. When choosing a lock for the coupler it makes it much easier if you are able to identify the coupler manufacturer. The Blaylock EZ Lock Gooseneck Coupler Lock, part # BLTL-55-40D is designed to fit RAM Gooseneck Couplers. This lock has a wider bracket for the RAM Coupler. If you have a Bulldog, Stallion, Superior, or T.E.M. Gooseneck Coupler the correct lock for you is part # BLTL-50-40D. This lock has a narrower bracket feature. My contact...
    view full answer...
  • Recommended Coupler Lock for Big Tex Gooseneck Trailer
    I was not able to locate specific manufacturer information regarding the couplers that are used on Big Tex Gooseneck Trailers like what you have. With that being said, they do look very similar to the Ram Gooseneck Coupler # GCSQTW-30008 that you mentioned, with its square tube design and crank. If you find that this is what you have, I recommend the Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-55-40D. This coupler lock is designed specifically for Ram gooseneck couplers and features...
    view full answer...
  • Coupler Lock for RAM, Bulldog Style Gooseneck Couplers
    The Master Lock Trailer Coupler Lock # 377DAT is designed to fit trailer couplers that are towed with a rear hitch, not a gooseneck hitch. For a gooseneck coupler lock, you would want # BLTL-55-40D for RAM gooseneck couplers or # BLTL-50-40D for Bulldog/Stallion/Superior/T.E.M. couplers.
    view full answer...
  • Recommended Gooseneck Coupler Lock For A Kaufman Trailer
    The Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-55-40D per Kaufman is the correct lock for you. If you need the set screw as well then you will need the # BLTL-57-40D2. This kit includes both the lock for coupler section and the set screw you will need. I attached a review video link below.
    view full answer...
  • Lock for Ram Gooseneck Coupler With Round Tube
    The InfiniteRule Hitch Lock is designed for goosenecks with a 4" round outer tube, and the RAM goosenecks have a 4-1/2" round outer tube like the Ram Gooseneck Coupler # GCPN-25008. For the most security I recommend the Blaylock EZ Lock Gooseneck Coupler Lock Combo - RAM Gooseneck Couplers # BLTL-57-40D2. This has a coupler latch lock and set screw lock and comes with a pair of padlocks for the best way to secure your gooseneck. You also have the option of getting the coupler lock...
    view full answer...
  • Recommended Gooseneck Coupler Locks For 2012 Sundowner Rancher Trailer
    Many of the gooseneck locks we offer are designed to fit specific hitches and styles. If the gooseneck you have on your 2012 Sundowner 20 ft Rancher is a Bulldog, Stallion, Superior, or T.E.M. coupler, then I recommend part # BLTL-50-40D. This includes a stainless steel padlock. If your gooseneck is made by RAM, I recommend the Blaylock EZ Lock Gooseneck Coupler Lock, part # BLTL-55-40D. We do offer combo locks that secure both the coupler and the inner tube like part # BLTL-57-40D2...
    view full answer...
  • Recommended Trailer Locks for Bumper Pull Trailers and Gooseneck Trailer That Can Be Keyed Alike
    I have a solution for you, but there is not a set of coupler locks for a gooseneck trailer and traditional coupler that can be keyed the same. However, there are some options that can be keyed alike within their application so if you needed more traditional coupler locks in the future those could be keyed like the first one. For the trailers you've got with traditional couplers I recommend using the Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # DT25013KA,...
    view full answer...
  • Recommended Gooseneck Coupler Lock for Puma Trailer
    We have a few different options depending on the gooseneck coupler you have on your Puma trailer. If you have a Bulldog, Stallion, Superior, or T.E.M. coupler then I recommend the Blaylock EZ Lock Gooseneck Coupler Lock # BLTL-50-40D. If you have a RAM coupler then you would need the # BLTL-55-40D instead. Both of these have an option to come with the Blaylock EZ Lock for Set Screw on Gooseneck Coupler - Aluminum # BLTL-51-40D. You would need the # BLTL-53-40D2 or # BLTL-57-40D2. The...
    view full answer...

Do you have a question about this Gooseneck Trailer Lock?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate gooseneck trailer lock information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jacob T
Video Edited:
Jacob T
Employee Cole B
Installed by:
Cole B
Employee Randy B
Installed by:
Randy B
Employee Zach D
Video by:
Zach D

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 1-800-940-8924