Trailer Coupler Locks

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Blaylock Industries

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Fits 1-7/8 Inch Ball

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Fits 2 Inch Ball

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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

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Trailer Coupler Locks

Shipping Weight: 4 lbs

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BLTL-20-40D - Universal Application Lock Blaylock Industries Trailer Coupler Locks
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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. Lowest 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 800-298-8924 for expert service.
  • All Info
  • Reviews (600)
  • Q & A (12)
  • Videos (1)
  • Photos
  • Why etrailer?

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
  • Blaylock Industries
  • Keyed Alike
  • Universal Application Lock
  • Aluminum

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
  • Keyed-alike option - select "Keyed Alike" to order multiples of this lock keyed alike or to key the same as other Blaylock locks that use the 40D Master Lock padlock
  • 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







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


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




Video Transcript for Blaylock Industries Trailer Coupler Locks - Surround Lock - BLTL-20-40D Review

Today were going to review part number BLTL-20-40D. This is the Blalock easy lock trailer coupler lock for Bulldog collar lock couplers with the included master lock padlock. This lock is designed to work with the Bulldog collar lock style couplers that fit one and seven-eighths inch, two inch, or two and five-sixteenths inch hitch balls. After this locks been secure on your coupler itll render the coupler inoperable which will insure peace of mind. This lock is made of an aircraft grade lightweight aluminum, which is strong and resist wear and corrosion. It has a three quarter inch diameter steel pin which will slide through the bracket and over the coupler to prevent it from being removed.

The stainless steel master lock padlock which is included has a hardened steel shackle which will secure the unit to the coupler. The shield and shackle will prevent access with bolt cutters. It is resistant to wear and corrosion. There are two keys included. This can be keyed to match your other Blalock coupler locks that require a padlock.

I did say this lock is for the Bulldog collar lock style couplers. To give you an idea of it I have one here. This is the Bulldog collar lock style coupler and basically what it is when they say collar lock it has a spring loaded collar right here that will open up to go around the hitch ball and then you push it closed and lock it into place. Ill show you. Basically if you just pull up and on the latch youll see the spring loaded collar will open up.

Youll attach it around the hitch ball and then when you push it closed and release the latch this sleeve will slide over it and lock it into place. Basically on this collar lock style what you would do is take the Blalock lock, install it over where the hitch ball normally would go. What you want to make sure is that the slanted side of the lock here will be facing the front of the coupler. Then just place the ball up under the coupler and into the ball hole. The sides of the lock will surround the coupler and then youll slide this three quarter inch diameter pin over it through the top hole and attach there will be a hole here on the end of it a three-eighths inch size hole that will accept this three-eighths in size shackle here.

Just open it up, run it through the hole in that pen and as you can see now it is locked into place and the coupler cannot be removed from the lock. That will prevent anybody from hooking up your trailer to their hitch ball and taking off with it. This part is made in the USA. Now we also sell this part, if you want to buy just the lock if you already have your own padlock, and you just want to buy this part separately we do sell it. It is a BLTL-20, thats the coupler lock without the padlock. We also sell the master lock padlock separately if you need it. It is an ML40D. I do want to give you a few dimensions on this lock. It is four and a half inches wide. It is two and a half inches deep. The overall height on it will be five inches. That should do it for a review on part number BLTL-20-40D.


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:  4.8 out of 5 stars   (600 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.

- BLTL-20-40D
by:

Just received this today. It’s extremely sturdy and getting a bolt cutter anywhere on this hitch lock looks impossible. I’m so far very impressed 698912



- BLTL-20-40D
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. 485266


Comments

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!

Julie - 03/16/2019

50591
Comments

Still very happy with the trailer Coupler lock

Julie - 03/16/2019

50600

- BLTL-20-40D
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. 369817



- BLTL-20-40D
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. 398959


Comments

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

Y-Lee K - 06/25/2018

40193

- BLTL-20-40D
by:

I had seen some negative reviews for etrailer and actually hesitated to place an order, but they had exactly what I wanted and their prices were better than anyone else. So I placed an order..... The customer rep was excellent and very helpful. My order arrived in 2 days exactly as I ordered. Great experience.!!! I would certainly buy from them again. 330331



- BLTL-20-40D
by:

Lock works great on my Bulldog coupler. 230294



- BLTL-20-40D
by:

I done some research about this and similar products and found this product to be the best bank for the buck. made to fit my Bulldog hitch. It is used by folks that sell trailers, I thought that was good enough for me... ordered one with the master lock from e_trailer received in in just a few days as stated as for pricing ...you won't be it by much if any! 160561


Comments

lock bracket seems real secure but is a little more trouble than old ,old style ...throw on a lock and your done.

LaVoyd i - 11/13/2015

15877

- BLTL-20-40D
by:

The fit is perfect for the bulldog coupler. It should keep unwanted thieves away, I feel safer about leaving my trailer unattended 669084



- BLTL-20-40D
by:

The staff is excellent there they helped me a lot on the phone and I like it because you can talk direct to the person you're working with thank you again 659216



- BLTL-20-40D
by:

Just what I needed and super fast shipp ing! Thanks!!! 621805



- BLTL-20-40D
by:

Excellent product. Fit like a glove on a 2 5/16" bulldog hitch 619350



- BLTL-20-40D
by:

The lock is just as advertized. It fits the hitch on the trailer. Service, shipping and notification were excellent. 612965



- BLTL-20-40D
by:

Ordering flawless, Delivery a day early and the product worked perfectly. No complaints here 603948



- BLTL-20-40D
by:

This is my second order from etrailer. Very pleased with the communication from seller regarding item and the prompt shipping. Highly recommend. 592781



- BLTL-20-40D
by:

What an amazing lock! It’s not like the cheap garbage you buy locally. I know nothing is theft-proof, but it’s going to take an engineering degree to steal my trailer now! 582612



- BLTL-20-40D
by:

Fast and friendly service, exactly what I needed for my trailer. 577131



- BLTL-20-40D
by:

Was packed well; easy installation. 565585



- BLTL-20-40D
by:

Sloppy fit 485029


Comments

its ok but I thought it would fit better

Blake C - 03/15/2019

50551

- BLTL-20-40D
by:

this will work perfect for me. I don't want some one to "borrow" my trailer. I got my trailer to haul my Vette out when hurricane's approach. Would like to thank George for being so quick and helpful on my purchase. 480597



- BLTL-20-40D
by:

Excellent service, fast delivery. Just what I was looking for to lock and secure my trailer. 471359



- BLTL-20-40D
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. 450419


Comments

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.

Michael W - 11/09/2018

45540

- BLTL-20-40D
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. 440194



- BLTL-20-40D
by:

It's perfect 440132



- BLTL-20-40D
by:

It fit a little loose on the trailer. Maybe it can be fixed. Otherwise, a good product! 427019



- BLTL-20-40D
by:

This is a heavy-duty lock that fits my Bulldog hitch; most locks will not fit a Bulldog. 416698



- BLTL-20-40D
by:

nice product, price a little high for a piece of unpainted steel, also needs to be a left and right side for trailers, in Texas needs opening on left to light the licence plate. The people in sales were pleasant to talk with, product arrive as promised, nice experience, will by from them again, recommended. 387398



- BLTL-20-40D
by:

Very easy to install and a perfect fit, thanks. 371930



- BLTL-20-40D
by:

thanks again always excellent service and great product 352222



- BLTL-20-40D
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! 340509


Comments

Still lovin my EZ Lock Trailer Coupler Lock!

kustomize - 02/10/2018

34491
Comments

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.

kustomize - 02/10/2018

34498

- BLTL-20-40D
by:

Delivered on time, nice quality and fits my Bulldog coupler perfectly. 323962



- BLTL-20-40D
by:

From the initial order until the time the product arrived was perfect! Exactly what we wanted and shipping was fast. 322892



- BLTL-20-40D
by:

Nice lock but the main part doesn't look very strong. Looked a lot higher quality in the advertisement. 306570


Comments

Was surprised it was aluminum, should be steel

mike c - 10/13/2017

29245

- BLTL-20-40D
by:

Great Service as always 306200



- BLTL-20-40D
by:

Seems like a very good lock for the bulldog coupler. I used it on my 2 5/16" coupler. Seems like it secures it very well. Sure if someone wanted to steal the trailer they could cut off the lock, but it would definitely take them some time. This will definitely slow down the process, and deter many. 292562



- BLTL-20-40D
by:

Great product, and great service by Etr ailer 289322



- BLTL-20-40D
by:

Appears to be a good & appropriate product. Good insurance designed to help you sleep better. 282327



- BLTL-20-40D
by:

Trailer ball lock fits very secure on my trailer. It's easy to install and remove with a sturdy lock. 268107



- BLTL-20-40D
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. 267728



- BLTL-20-40D
by:

Great doing business. Received item very timely. Quality product Will definitely do business again. 267663



- BLTL-20-40D
by:

I like this item because it's Made in the USA and is solid! 262132



- BLTL-20-40D
by:

Product works great with the bulldog style hitch and with everything included it is simple. 256909



- BLTL-20-40D
by:

Nice product. Never worry about my trailer being stolen when I'm out of town. 250318



- BLTL-20-40D
by:

Great coupler lock. Fit my 2" Bulldog coupler. Masterlock included. Great deterrent for those with sticky fingers! 233246



- BLTL-20-40D
by:

Seems to be very strong,was very easy to use, and it is made in the USA 229745



- BLTL-20-40D
by:

Great service!! Product as described. 209086



- BLTL-20-40D
by:

Person who took my order, first rate, knew product. All 3 locks rec'd are as advertised, maybe a little more. 202002



- BLTL-20-40D
by:

Item was received as promised in excellent condition. Will purchase from Etrailer again when parts are needed for my trailers. 161189



- BLTL-20-40D
by:

Just what I wanted . I haven't used it yet but I'm sure it will do the job. 158586



- BLTL-20-40D
by:

The product works well and had good help from Titus with my orders 148174



- BLTL-20-40D
by:

I hear about trailers being stolen everyday so it was a no-brainer to purchase this EZ Lock Trailer Coupler. Easy to install, easy to use. Enough said. Thanks etrailer.com! 146883


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Ask the Experts about this Blaylock Industries Trailer Coupler Locks

Do you have a question about this Trailer Coupler Lock?


  • 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 couplare and is only 3-3/16 inches wide. The # DT25013KA would instead be what I recommend as this fits all standard coupler sizes like what you have.
    view full answer...

  • Recommended Coupler Lock For Best Theft Deterring
  • I'm sorry you don't find the Reese Tow and Store Lock Kit # RP7014700 to be acceptable. Based on your description it sounds like you are focused on the coupler lock and we have very positive reviews on this product. However we do offer a wide range of each product to allow you to determine the best fit for your needs and budget. I have linked the page to all of the options to assist. I personally like the Fastway Universal Trailer Coupler Lock # DT25013KA and that is my recommendation...
    view full answer...

  • 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...

  • Recommendation for a Coupler Lock for a Collar-Loc Trailer Coupler
  • Master Lock coupler lock # 3784DAT is not the best option for a Collar-Lok 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...

  • Coupler Locks for a Bulldog Style Coupler
  • Yes, check out the EZ Lock Trailer Coupler Lock # BLTL-20-40D. This coupler lock is compatible with Collar-Lok Couplers and then use for a pin style lock to slide through the coupler you would want the Masterlock Trailer Coupler Lock part # 2847DAT.
    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...

  • 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 # DT25013KA. I attached review videos for both coupler locks for you to check out.
    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...

  • 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...
    view full answer...

  • 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...

  • 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
  • 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...


Do you have a question about this Trailer Coupler Lock?




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Info for this part was:

Installed by:
Jeff D
Expert Research:
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Expert Research:
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Written by:
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Updated by:
Adele M
Updated by:
Erin H

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