bing tracking image
  1. Trailer Coupler Locks
  2. Blaylock Industries
  3. Fits 1-7/8 Inch Ball
  4. Fits 2 Inch Ball
  5. Fits 2-5/16 Inch Ball
  6. Surround Lock
EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers

EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers

Item # BLTL-20-40D
Our Price: $64.30
Trailer Coupler Locks
Shipping Weight: 4 lbs
Add to cart
In Stock
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 trailer that has a Bulldog Collar-Lok coupler. Includes stainless steel padlock. Great Prices for the best trailer coupler locks from Blaylock Industries. EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers part number BLTL-20-40D can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (779)
  • Q & A (0)
  • Photos

Blaylock Industries Trailer Coupler Locks - BLTL-20-40D

  • Fits 1-7/8 Inch Ball
  • Fits 2 Inch Ball
  • Fits 2-5/16 Inch Ball
  • Surround Lock
  • Keyed Unique
  • Aluminum
  • Blaylock Industries
  • Universal Application Lock

Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it deters towaway theft of your trailer that has a Bulldog Collar-Lok coupler. Includes stainless steel padlock.


Features:

  • Coupler lock deters theft of your trailer that has a Bulldog Collar-Lok-style coupler
  • Heavy-duty bracket fits around your trailer's coupler
    • Raised ball on platform sits inside of coupler
  • Hardened steel pin slides through the bracket to secure the lock to your coupler
  • 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: most 1-7/8", 2", and 2-5/16" Bulldog Collar-Lok-style couplers
  • Overall dimensions: 2-1/2" long x 4-1/2" wide x 5" tall
  • Pin diameter: 3/4"
  • Weight: 4 lbs


This Blaylock EZ Lock is designed to work with Bulldog Collar-Lok couplers that fit 1-7/8", 2", or 2-5/16" hitch balls. After it has been secured, this coupler lock renders your trailer's coupler inoperable, ensuring peace of mind.


With the slanted side of the lock pointing toward the front of the coupler, simply place the coupler lock's raised ball up under the coupler and into the coupler's ball hole. The sides of the lock will surround the coupler. Slide the 3/4" diameter pin through the holes in the lock and secure the pin in place with the included Master Lock padlock.



TL20 Bulldog Collar Lock Coupler Lock by Blaylock Industries

40DPF MasterLock Padlock





Customer Satisfaction Score:


Customer Reviews

EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers - BLTL-20-40D

Average Customer Rating:  4.7 out of 5 stars   (779 Customer Reviews)

Fight back against trailer thieves with this rugged, rustproof aluminum trailer coupler lock. Simple yet effective, it deters towaway theft of your trailer that has a Bulldog Collar-Lok coupler. Includes stainless steel padlock.

by:

I am extremely pleased with this coupler lock. It is well made, robust and rugged. It also fits well and is easy to install.



by:

This lock system is simple and weather exposure should not be a hindrance for removal when needed.
I would like to see the pin made of hardened steel. May get a machinist to fab one up out of a harder Rockwell rating.
Painted it Orange and it contrasts very well to the black trailer frame.
This is a visual que for those passing by the county road, that the coupling has 'something' on it.

The Master lock appears to be of a higher quality the the same design but sold for storage unit use. It may be made by Master but have no way of knowing. The lock operates very smoothly and the stainless body is perfect for outdoor application.
A shout out to Jennifer who has been providing excellent customer service from day one.
This means I will use etrailer for future trailer needs, thanks to her.
Hope this helps others.

Y-lee K.

6/25/2018

still a great solid product. Spray some silicon in the lock about every few months and all works well.



by:

I tried other trailer locks without success , this lock fits great. very well made .



by:

Coupler lock shipped/arrived quicker than expected and works as intended.



by:

One year in with many camping trips, we are very happy with the coupler lock. This lock fits the bulldog style coupler well, and the master lock has worked well through rain and shine.



by:

The lock does not fit my trailer. How do I return your product????

Etrailer Expert

Brooke M.

6/27/2023

Well shoot, I am sorry to hear that. I will have our customer service team reach out to you about making a return!



by:

I have a bulldog style 2 5/16 hitch on my dump trailer, this fits perfect. Looks like its heavy duty.



by:

We have several trailers we use to haul equipment to job sites and have to leave them at site over night so these locks are very sturdy which gives us security from theft and was able to get all locks keyed alike so one key works on all trailers which is convenient.



by:

I lost the metal rod 6 months ago, can not use the lock any longer!



by:

The fit is perfect for the bulldog coupler. It should keep unwanted thieves away, I feel safer about leaving my trailer unattended



by:

Hitch clearance was a little to tight for my stacker trailer but easy to modify, other than that it worked great



by:

Lock works great on my Bulldog coupler.



by:

I am greatful for your help with my order correction, I like you products,and service. Please send tracking info.



by:

The product is well designed and I'm sure would work on many/most couplers. However I have an Equal-i-zer 4-point weight distribution hitch with sway control, and the EZ Lock simply won't fit. The Equalizer is too large and the EZ Lock wasn't designed to give enough clearance to get on there. So I wasted my money.

Buy this if you have another configuration, but be forewarned if you have what I have and avoid this product.

Etrailer Expert

Sierra K.

7/30/2021

Thank you for your review. This lock is designed to fit Bulldog Collar-Lok-style couplers.



by:

Great product, perfect fit for my bulldog hitch. Everyone that sees it comments about what a strong lock it is. It is easy to use and just its looks is a huge deterrent.

It is easy to put on and take off. I am glad I found EZ Lock Trailer Coupler Lock for Bulldog Collar-Lok Couplers. I would definitely buy it again!

Kustomize

2/10/2018

Still lovin my EZ Lock Trailer Coupler Lock!

Kustomize

2/10/2018

Love the lock. I lost my first one and had to purchase a second one - been more careful with it. It is a great lock. Ive had several people comment on it and want one like it so Ive referred them to you guys.Thanks for the follow-up.



by:

Will not fit over the frame of the rece iver.



by:

I highly recommend This lock, along with the offered MasterLock padlock to anyone wanting to secure a trailer with a Bulldog hitch. I am very pleased with the quality & workmanship of this product to help secure my Horse Trailer hitch.

Julie

3/16/2019

After 1 year, Still very Happy with this lock. It is on my trailer all the time, removed only to hook the trailer to the truck. Excellent, quality product!



by:

Fits well and works great!



by:

This works great with the Bulldog coupl ers



by:

etrailer was excellent in updating me on my order and delivering on time.

The trailer coupler lock worked exactly as expected. I couldn't ask for more.

Michael W.

11/9/2018

After a year there is no change. It works just as I expected. It has been off and on my trailer multiple times, stored in the elements, and it shows no signs of wear.



by:

This is a great lock for a trailer hitch. I use it with a bulldog style hitch. Definitely adds a layer of theft protection that may serve as a deterrent for theifs. I would definitely recommend this lock to anyone.



by:

Heavy duty and solid. Hopefully, it does the job.



by:

Well made, and easy to install and remo ve.



by:

It was too lose and fell off.
I had
to put a sleeve around the pin to take up the slack. I have 3 different trailers and it was the same thing.
After the alterations it works good.

Etrailer Expert

Sierra K.

10/26/2021

This item works with Bulldog Collar-Lok couplers only. I believe this universal coupler lock will work better for you and your 3 different trailers: Item # TMX47FR.



by:

The purchase of this product was a terrible idea. Its made of cheap aluminum, that flexes and bends.
The key for the lock snapped off in the lock, full disclosure, I dont know why, could have been my fault, but it broke pretty easily.....
This lock is a mild deterrent at best, I wouldn't trust it on a trailer worth anything more than the lock is worth.


25
771
Show More Reviews

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

  • Recommended Collar Style Trailer Coupler Lock
    The EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers # BLTL-20 is what I recommend for your style coupler as long as it fits the dimensions. This coupler is 3-3/16 inches wide and 4 inches tall. It is roughly 2-5/8 inches tall to the bottom of the 3/4 inch pin. If you want this with the padlock, then use # BLTL-20-40D instead.
    view full answer...
    Image 1 for
  • What is The Interior Height Of The EZ Lock Trailer Coupler Lock BLTL-20?
    The EZ Lock Trailer Coupler Lock # BLTL-20 is 2-5/8" from the base of the ball to the bottom of the lock pin. The EZ Lock Trailer Coupler Lock # BLTL-20-40D is available with both the coupler lock and Master Lock Stainless Steel Padlock with Shielded Shackle # ML40D for the best protection.
    view full answer...
    Image 1 for
  • Difference Between Blaylock TL-20 and TL-33 Coupler Locks
    Sure thing! The EZ Lock Trailer Coupler Lock # BLTL-20 is for Bulldog Collar-Lok-style couplers while the EZ Lock Trailer Coupler Lock # BLTL-33 is designed for Fulton, Shelby, Dutton-Lainson, Atwood, and similar couplers. I've attached some review videos for you to check out.
    view full answer...
  • Coupler Lock Recommendation for a Bulldog Collar Lok Coupler
    The Bulldog couplers are usually the collar-lok style couplers so you would need to go with a different coupler lock than the # BLTL-33 that you referenced. Instead you would wan the part # BLTL-20-40D as it is specifically designed for collar lok Bulldog coupler. I attached a review video for you to check out as well.
    view full answer...
  • Coupler Lock Replacement Option For TowSmart Pro Class With Missing Keys
    I have a replacement option, but there isn't replacement barrel keys for your TowSmart Pro Class Coupler Lock. If you've lost the key's you'll need to replace the lock all together. I recommend going with the EZ Lock Trailer Coupler Lock # BLTL-20-40D that way if you ever lose the lock again you can replace just the lock, and not the entire assembly.
    view full answer...
  • Coupler Lock for Atwood 2-Inch A-Frame Coupler
    The Blaylock EZ Lock Trailer Coupler Lock # BLTL-20-40D is specifically meant for use with Bulldog Collar-Lok-style couplers such as # BD028381. For your Atwood 2-inch A-frame coupler you can instead use part # BLTL-33 and lock part # ML40D.
    view full answer...
  • Coupler Lock Recommendation for a Bulldog Collar-Lok Coupler
    Yes, check out the EZ Lock Trailer Coupler Lock # BLTL-20-40D. This coupler lock is compatible with Collar-Lok Couplers and should work well with the Bulldog Collar-Lok Adjustable Channel Mount Coupler # BD028657 you referenced.
    view full answer...
  • Hitch Lock Recommendation for Bulldog A-Frame Collar Lok Coupler
    For your Bulldog Collar Lok coupler part # BD028499 we have the Blaylock Coupler lock part # BLTL-20-40D which was designed specifically for your coupler so it would work great. I attached an install picture and review video for you to check out as well.
    view full answer...
    Image 1 for
  • Best Coupler Lock for Bulldog Cast Head 2-5/16 Coupler
    There are a couple of options for very high-quality coupler locks for the Bulldog cast head coupler, with the absolute best being from AMPLock: - AMPLock Trailer Coupler Lock for 2-5/16" Ball Couplers w/o Lip # AMP34FR This lock is a beast for a number of reasons, starting with its ductile cast iron construction. Ductile cast iron is just not going to be something a thief is able to cut through or smash off it is far, far too strong for that and often used in things like automotive parts...
    view full answer...
  • Recommended Lock for Bulldog Collar-Lok Coupler
    For your trailer with a 2" Bulldog Collar-Lok coupler I recommend the EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers # BLTL-20-40D. The Amplock you referenced fits a different style of Bulldog coupler. The Blaylock EZ Lock is specifically designed for your coupler style. Once it is attached, the coupler will be inoperable providing you with the security you are looking for.
    view full answer...
  • Lock Recommendation for Bulldog Collar-Lok Trailer Coupler
    I'm assuming you have a Bulldog Collar-Lok trailer coupler like the # BD028244 you'd looked at. Blaylock makes a lock specifically designed for a Bulldog Collar-Lok trailer coupler, part # BLTL-20-40D. The lock includes the lock assembly itself as well as the locking pin and disc padlock. I'll link you to a demonstration video featuring the # BLTL-20-40D coupler lock.
    view full answer...
  • Coupler Lock Recommendation for Use with Demco Channel Tongue Trailer Coupler
    Yes the coupler part # DM13689-52 that you referenced is lockable. For a pin style lock the part # 28012 would work well. Or for a lock that goes around the coupler opening the part # BLTL-20-40D would be a great option. I attached review videos for both locks.
    view full answer...
  • Coupler Lock that Will Fit 34 1995 Airstream Excella 1000 Travel Trailer
    If your 1995 Airstream Excella 1000 Travel Trailer has a Bulldog Collar Lok style of coupler on it then yes, the EZ Lock Trailer Coupler Lock # BLTL-20-40D would fit and work well. I pulled up pictures of your trailer and wasn't able to verify that this was the style of coupler that the trailer had, but it's also very common for trailers to have the couplers swapped so you may have a Collar Lok style coupler like what I attached a picture of. If you have a different style of coupler we...
    view full answer...
    Image 1 for
  • Lock Similar to Blaylock that is Steel Instead of Aluminum
    Aluminum is a softer metal so if you were worried about it getting cut through quickly, and I don't fully blame you, I'd go instead with the FastWay lock part # FA86-0015-317 which is steel and a similar design. This also fits nearly all coupler styles too which makes it very versatile.
    view full answer...
  • Coupler Lock that Fits Airstream with Trigger Latch Coupler
    For your Airstream with a trigger latch style coupler a Fastway Coupler lock like the part # FA86-0015-318 would be your best option as it is the most universal style coupler and it works really well.
    view full answer...
    Image 1 for
  • Trailer Coupler Lock Compatible with Wide Coupler
    If you have a Bulldog Collar-Lok Coupler, then the EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers # BLTL-20-40D is your best option. If you want the pin style coupler lock, then the Bulldog Easy Access Coupler Lock - Swivel Head - Chrome # BD580409 is the largest span option at 3-5/8 inches.
    view full answer...
    Image 1 for
  • Best Keyed Alike Fastway Universal Coupler Lock
    I have a solution for you, and we have several lock assemblies that can be keyed alike, but the one you were looking at item # BLTL-20-40D can not be keyed alike. I recommend the Fastway Universal Coupler Lock Key 316 item # FA86-0015-316. This coupler lock also fits 1-7/8", 2" and 2-5/16" couplers. I have linked our entire selection of couple locks that can be keyed alike as well as a couple of review videos for this lock.
    view full answer...
  • Lock For Bulldog Collar-Lok Coupler
    We do have a lock that will work for your Bulldog 4BWC-AR coupler, which is the Collar-Lok coupler similar to part # BD028462. What you can use is the following: - EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers # BLTL-20-40D This comes with the lock that will surround the coupler and a padlock made from stainless steel with a hardened steel shackle.
    view full answer...
  • Coupler Lock Recommendations for a RAM Brand Trailer
    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...
  • Coupler Lock Recommendation for Grand Design Imagine AIM 15rb
    I really like the Fastway coupler locks because of how well they are made and how universal their fit design is. The part # FA86-0015-316 would work great on your Grand Design Imagine.
    view full answer...
  • Is There A Universal Coupler Lock That Can Be Keyed Alike
    Great question. EZ Lock Trailer Coupler Lock for 1-7/8", 2", 2-5/16" Bulldog Collar-Lok Couplers # BLTL-20-40D. We are unable to key alike the locks that come with the EZ lock trailer coupler. However, we can key alike the fastway trailer coupler. To do so you will select key alike from the drop down menu the select how many you would like to purchase. It is that easy. Fastway Universal Trailer Coupler Lock for 1-7/8", 2" and 2-5/16" Couplers # FA86-0015-318.
    view full answer...
  • Coupler Lock Recommendation for Trailer with 4 inch Wide Coupler
    We have a solution that will work great but the part # BLTL-20-40D would not be what you'd need as it is designed to fit a Bulldog Collar Lok coupler and is only 3-3/16 inches wide. The # FA86-0015-318 would instead be what I recommend as this fits all standard coupler sizes like what you have.
    view full answer...
    Image 1 for
  • Recommendation for a Coupler Lock for a Collar-Loc Trailer Coupler
    For a Collar-Lok coupler I recommend a lock designed for then such as # BLTL-23 (2-5/16 inch ball), # BLTL-20-40D (1-7/8 to 2-5/16 inch balls), or # BLTL-22 (2 inch ball).
    view full answer...
  • Comparing Different Types of Coupler Locks
    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...

Do you have a question about this Trailer Coupler Lock?


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Robert C
Installed by:
Robert C
Employee Adam E
Installed by:
Adam E
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee David L
Written by:
David L
Employee Adele M
Updated by:
Adele M
Employee Erin H
Updated by:
Erin H
Employee Noah M
Updated by:
Noah M
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Zach D
Video Edited:
Zach D

At etrailer.com 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