1. Gooseneck Trailer Locks
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  5. Aluminum
Blaylock EZ Lock for Set Screw on Gooseneck Coupler - Aluminum

Blaylock EZ Lock for Set Screw on Gooseneck Coupler - Aluminum

Item # BLTL-51-40D
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Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it prevents removal of the inner tube of your gooseneck coupler to help deter towaway trailer theft. Includes stainless steel padlock. Call 800-298-1624 to order Blaylock Industries gooseneck trailer locks part number BLTL-51-40D or order online at etrailer.com. Free expert support on all Blaylock Industries products. Guaranteed Lowest Price and Fastest Shipping for Blaylock EZ Lock for Set Screw on Gooseneck Coupler - Aluminum. Gooseneck Trailer Locks reviews from real customers.
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  • Reviews (348)
  • Q & A (4)
  • Videos (1)
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Blaylock Industries Gooseneck Trailer Locks - BLTL-51-40D

  • Gooseneck Set Screw Lock
  • Blaylock Industries
  • Keyed Unique
  • Aluminum

Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it prevents removal of the inner tube of your gooseneck coupler to help deter towaway trailer theft. Includes stainless steel padlock.


Features:

  • Coupler lock helps deter theft of your gooseneck trailer that has an adjustable coupler
  • Heavy-duty bracket secures around coupler's set screw to prevent removal of inner tube from outer tube
  • Steel pin slides through bracket and under screw
  • Stainless steel padlock with hardened steel shackle secures pin in place
  • Aircraft-grade, lightweight aluminum construction is strong and resists wear and corrosion
  • 2 Keys are included
  • Made in the USA


Specs:

  • Application: set screws on most adjustable gooseneck couplers
  • Overall dimensions: 4" long x 4" wide x 5" tall
  • Pin diameter: 3/4"
  • Weight: 1-1/5 lbs


After it has been secured, this Blaylock EZ Lock ensures that the inner tube can't be removed from the outer tube of your adjustable gooseneck coupler. Simply position the lock around the set bolt, insert the 3/4" diameter steel pin through the bracket and under the bolt, and secure the pin in place with the included Master Lock padlock.


An additional coupler lock (BLTL-50-40D or BLTL-55-40D - sold separately) is available to prevent unauthorized access to the coupler latch.



TL51 Goose Neck Adjustment Screw Lock by Blaylock Industries

40DPF MasterLock Padlock





Video of Blaylock EZ Lock for Set Screw on Gooseneck Coupler - Aluminum

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




Video Transcript for Review of Blaylock Industries Gooseneck Trailer Locks - Gooseneck Set Screw Lock - BLTL-51-40D

Hello everybody. This is Jeff at etrailer.com. Today I'm going to take a look at this Blaylock Easy Lock Set Screw Lock for your gooseneck coupler. How this coupler lock is designed to prevent theft of your gooseneck trailer that has an adjustable coupler. Now for this video demonstration, I have pulled the Bulldog Coupler here, just to show you what it looks like and how the lock will attach to it. Now, the lock itself will include this bracket or cover and includes this three quarter inch diameter steel pin, a spacer, a large flat washer, which I've already pre-installed onto the set screw.

And this nice stainless steel padlock with the two keys. Now this heavy duty bracket, it's an aluminum construction. It secures around your coupler set screw to prevent removal of the inner tube from the outer tube on your coupler. Basically, as I mentioned, you can see I've already taken out the set scoop and then installed the flat washer and then put the set screw back in there and tightened it down. And the reason he put that flat washer up there is if you look at the cover of the lock that goes over the set screw, you can see it has a groove cut in it, and that's designed to slide over that washer that you will install.

And you can see that will hold it in place. Keep it from being removed. Now this does include this three quarter inch diameter steel pin. And this will slide under that set skirt and lock it into place. Now it does also come with this just like that.

It does come with this plastic spacer. There are a few couplers that will require the spacer to be installed on the inside when you put the pin in there. And we just install that on the inside and then slide it through the lock on this one. You don't really need that spacer, but it is required on it for some of them. So once you get that all the way through there, and what you'll do is you'll take this stainless steel padlock to master lock, has a hardened steel shackle.

It's a three quarter inch diameter shackle. It'll go through the hole in that steel pin, and it comes with the two keys. So what you do is just open that up, open the shackle up. I'm going to come around here and line it up to the hole. That's in that pin. Once you get it lined up, then just twist it. And that shackle will go through that steel pin. And then it locks into place. You can see just like that the lock is locked onto that pin. And what that does is it keeps anybody from gaining access to that set screw. Because if you remove that set screw, then they could take the two tubes apart. But with this installed on it, there's no way they can gain access to it. As we've mentioned, this is a nice aircraft grade, lightweight aluminum construction, very strong resist wear and corrosion. It is made in the USA. Now, if you do want extra protection, we also sell a coupler lock that'll fit on the bottom here. This is to prevent unauthorized access to this latch handle right here and see this handle is used to open the coupler and lock it into place. What that coupler does, it slides on there and locks into place and it prevents this handle from being moved. So that'll also keep anybody from accessing your coupler. We do offer the coupler locks in two different part numbers, part number B L T L dash five zero dash four zero D. And the B L T L dash five five dash four zero D, both of those. Again, we sell separately on our website, A few specs on this. The lock is designed to sit most designed, to fit most set screws on most adjustable gooseneck couplers dimension of it is only about two and three quarter inches, two and three eighths inches deep by about three and one eight inches tall. And it is weighs only about one pound, but if you want to remove it, it's pretty simple. Just take your keys, put it into the padlock, twist it, and that removes the lock. And you can just slide your pin out, lift this off, and you're all ready to go simple as that, But that should do it for the review on the Blaylock, Easy Lock Set Screw Lock for your gooseneck coupler..


Customer Reviews

Blaylock EZ Lock for Set Screw on Gooseneck Coupler - Aluminum - BLTL-51-40D

Average Customer Rating:  4.8 out of 5 stars   (348 Customer Reviews)

Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it prevents removal of the inner tube of your gooseneck coupler to help deter towaway trailer theft. Includes stainless steel padlock.

- BLTL-51-40D
by:

Sturdy and solid assembly, easy to install. This should be great security from those who simply remove the pin an install there own lower unit...and disappear with your trailer.



- BLTL-51-40D
by:

Had to grind the washer hole opening to enlarge it so that it would fit the bolt on my gooseneck horse trailer. Looks nice and tidy and like it will send a thief on to the next one. Shipping was fast and service was excellent.



- BLTL-51-40D
by:

The product works well as a strong theft deterrant. etrailer was the best price at the time of purchase and their service was excellent. I would recomend etrailer for any of their products. EFS



- BLTL-51-40D
by:

very good product gives peace of mind when trailer is parked



- BLTL-51-40D
by:

great fit and function


Comments
Great I have had no concerns with this type of lock,Thank you for your great service
don w - 02/06/2016



- BLTL-51-40D
by:

Works as advertised. Provides security and peace of mind.



- BLTL-51-40D
by:

Works great, offers some peace of mind regarding the hitch.



- BLTL-51-40D
by:

This worked great!!



- BLTL-51-40D
by:



- BLTL-51-40D
by:

Excellent product and fast shipping.



- BLTL-57-40D2
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


Installation was very easy, took less than 10 minutes. Will help your run of the mill criminal to look else where for his next opportunity.


Comments
Great! No issues.
Gary - 07/31/2021


- BLTL-53-40D2
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


Great concept easy to lock-up. It took me a little bit to figure the Gooseneck Coupler, my order did not have instructions.


Comments
Great good product.
Walter - 08/18/2021


- BLTL-57-40D2
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


It is a well thought out product. The lock device for the King Post height adjustment cap screws fits nice. However, the main locking slug for the ball hitch doesn't fit my trailer like it is supposed to. I have a Kaufman trailer and I'm not sure what brand of post they use. The guide tab for the ball lock D-ring is in the way of the Blaylock pin. I am able to rotate the locking device 180 degrees and install it that way. It's a bit sloppy but it will impede a potential theft. I also fear the longevity of the padlocks. I can see them rusting if left out in the weather for too long. I keep my trailer tarp on when not in use and also flood the padlocks with WD40 I know it is impossible for a "fits everything" product. I think Blaylock would serve themself well if they did research and list all trailer brands that will fit or not fit their product and perhaps, have an alternate choice. I do recommend looking into this product if anyone is thinking about securing their trailer.



- BLTL-53-40D2
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


This hitch lock is excellent would definitely recommend to anyone. It has been out in the weather for a year now and there are zero signs of corrosion/rust on any of the components. The only thing that has room for improvement is the way it fits the bottom side, it fits a little loose but it's still impossible to remove without destroying it. Adds peace of mind letting your trailer sit somewhere knowing it's not going anywhere without a battle.


Comments
I have sold the trailer and the lock went with it but it was still holding up great when I last saw it!
Brad F - 09/12/2017



- BLTL-53-40D2
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


Something I should have purchased years ago. Fitment was easy. I had to get a bigger washer for the top lock, as my bolt was larger than the washer provide, but no big deal.


Comments
This product has worked great and continues to keep my trailer and contents safe. Again, wish I had purchased years ago
Allan R - 03/02/2020



- BLTL-55
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


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.



- BLTL-55
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


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!!



- BLTL-50-40D
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


Just got the lock a couple days ago. It was very easy to install on the coupling. Seems to fit perfect. Quality seems to be very good. Hopefully I'll never have to find out if it saves the trailer from being stolen.


Comments
First of all I want to say it is wonderful working with a company that actually cares about how their products are viewed by customers! Thank you. As for the lock itself, I am very happy with it. It is so easy to install and disconnect. I feel very confident in its ability to protect my trailer from theft.
-- comment by: Patrece - 04/10/2014


- BLTL-55-40D
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


I purchased the Blaylock Industries EZ Lock Gooseneck Trailer Lock about a year ago. I have occasion to park our trailer in out-of-the-way places. So, having this lock on it gives me peace of mind that someone isn’t just going to back their truck right up and take the trailer! I highly recommend this lock



- BLTL-53-40D2
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


This trailer locking system gives me the confidence I need to park my trailer outside with confidence and not have to worry about it disappearing.



- BLTL-50-40D
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


Does not fit Bulldog BX1 coupler, otherwise looks nice. etrailer did a great job helping me troubleshoot.



- BLTL-50
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


It fits on a Bulldog coupler quite loose no matter what way you install it. The way I am using it the lock is tighter but like every other lock system out there it only to keep the honest people honest. If someone wants something they are going to get it.



- BLTL-50-40D
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


It was very easy to put on and it fits great.


Comments
Still working like new
Gabron - 04/03/2020



- BLTL-50
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


This gooseneck coupler lock works great. Depending upon your coupler style, you may need to cut off the tabs a little bit to get a proper fit. It's an easy and quick modification.



- BLTL-51
by:

Review from a similar Gooseneck EZ Lock in Gooseneck Trailer Locks


Fits well and doesn't corrode, multiple locking sizes/holes


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Ask the Experts about this Blaylock Industries Gooseneck Trailer Locks

  • Lock to Prevent Removal of Inner Tube From Outer Tube on Gooseneck Trailer Hitch
    To help secure an adjustable gooseneck coupler, we offer the Blaylock EZ Lock for Set Screws, # BLTL-51-40D. This heavy-duty bracket secures around coupler's set screw, a steel pin slides through the bracket and under screw, to prevent removal of the inner tube from outer tube. I have attached a short video for you.
    view full answer...
  • Lock Compatible With Ranch Hitch Gooseneck Coupler Adapter
    The Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter # AM3100 does not have an integrated lock. You can always add components like the Safety Chains for Ranch Hitch 5th-Wheel-to-Gooseneck Coupler Adapter # AM3109 and the Blaylock EZ Lock for Set Screw on Gooseneck Coupler - Aluminum # BLTL-51-40D. You may be interested in the Slide Hammer for Ranch Hitch 5th-Wheel-to-Gooseneck Coupler Adapter # AM3103 to assist with installation of this product.
    view full answer...
  • What is the Width of the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter # BD0289650300
    The inside width of the Bulldog Gooseneck-to-5th-Wheel Trailer Coupler Adapter # BD0289650300 is 3-7/16" while the outside width is 4". If the inside width of your outer tube is about 3-1/2" then this coupler adapter won't fit. All of our other square inner tubes have the same 4" outer diameter. You may need to swap out your whole coupler for an option like part # BD0289590300 which is the whole adapter; inside and outside tubes. You can lock the king pin with part # e98896 and the...
    view full answer...
  • 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...

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Info for this part was:

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Employee Jeff D
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Installed by:
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Installed by:
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Employee David L
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