bing tracking image
  1. Adjustable Trailer Coupler
  2. Demco
  3. 2-5/16 Inch Ball Coupler
  4. Coupler Only
  5. 21000 lbs GTW
  6. Auto Latch
Demco Trailer Coupler - Cast - Adjustable Channel - eZ-Latch - Silver - 2-5/16" Ball - 21K

Demco Trailer Coupler - Cast - Adjustable Channel - eZ-Latch - Silver - 2-5/16" Ball - 21K

Item # DM14040-52
Our Price: $116.56
Adjustable Trailer Coupler
Shipping Weight: 9 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

Customer Photos

Need help with installation?
Locate installers near me
Cast ball coupler is made of sturdy steel and has a durable silver powder coat finish. Composite eZ-Latch ensures fast, easy, secure hookup and disconnect. Adjustable channel bracket and mounting hardware sold separately. 1-800-940-8924 to order Demco adjustable trailer coupler part number DM14040-52 or order online at Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Trailer Coupler - Cast - Adjustable Channel - eZ-Latch - Silver - 2-5/16" Ball - 21K. Adjustable Trailer Coupler reviews from real customers.
  • All Info
  • Reviews (497)
  • Q & A (0)
  • Videos (1)
  • Photos

Demco Adjustable Trailer Coupler - DM14040-52

  • 2-5/16 Inch Ball Coupler
  • Coupler Only
  • 21000 lbs GTW
  • Auto Latch
  • Demco

Cast ball coupler is made of sturdy steel and has a durable silver powder coat finish. Composite eZ-Latch ensures fast, easy, secure hookup and disconnect. Adjustable channel bracket and mounting hardware sold separately.


  • Cast ball coupler lets you hook up your trailer to your tow vehicle
    • Provides connection point for hitch ball
  • eZ-Latch mechanism ensures simple, secure hookup and disconnect
    • Lets you hook up when latch is in closed position - just drop coupler over hitch ball and latch will snap into place
  • Corrosion-proof polymer-nylon-resin composite latch handle is durable and impact resistant
    • Sleek low-profile design allows hazards to simply slip over the top of the coupler, preventing damage to latch components
  • Adjustable channel mount lets you change coupler's height depending on application
    • Channel bracket and mounting hardware sold separately
  • Sturdy steel construction
  • Silver powder coat finish offers excellent corrosion resistance
    • 500-Hour salt spray rating - great for marine applications
  • SAE J684 certified
  • Made in the USA


  • Application: 3" wide channel bracket
  • Ball size: 2-5/16"
  • Weight capacity: 21,000 lbs
  • Coupler dimensions: 8-1/8" long x 2-7/8" wide
  • Diameter of lock pin hole: 5/16"
    • Minimum span needed for pin lock: 3"
  • 1-Year warranty

Coupler Dims

Note: (4) 5/8" Grade 5 mounting bolts must be used to achieve the 21,000-lb weight capacity

eZ-Latch Coupler

Cast Coupler Cutaway

This coupler features a simple-to-use latching mechanism known as the eZ-Latch. With this mechanism, hooking up is as easy as dropping the coupler over your trailer hitch ball. The latch does not need to be tugged or manually activated to allow the ball into the coupler socket, nor does it have to be secured in place. Just make sure that the coupler is properly lined up with the ball when you lower it, and the rest is automatic. Disengaging the coupler is just as effortless. Simply lift up the handle and the coupler socket will automatically release its grip on the ball.

Demco eZ-Latch in Use

The contoured, low-profile design of the latch handle helps protect the coupler from damage by allowing any potential hazards - from debris on the road to your ball mount backing into the coupler - to simply slide over the top. This helps prevent anything from getting under the latch handle and releasing the ball, and it can also limit any damage to the coupler should an impact occur

Unlike most couplers, which have a pin hole on the handle latch, the eZ-Latch coupler features a hole on the side of the coupler itself. Inserting a coupler lock through this hole will keep the latch from lifting, preventing disconnect and theft.

Sturdy, Corrosion-Resistant Construction

Made of sturdy steel, this coupler features a durable silver powder coat finish that is designed to limit rust and corrosion. This finish has a 500-hour salt spray rating, making the coupler perfect for marine use.

The eZ-Latch's sleek, ergonomically designed handle is constructed of an impact-resistant polymer-nylon-resin compound that provides the flexibility and strength needed to bounce back from a collision. The handle is corrosion-proof, allowing it to withstand whatever the road and the elements dish out.

14040-52 Demco Trailer Coupler with Easy Latch for Adjustable Channel Bracket - Silver - 2-5/16" Ball - 21,000 lbs

California residents: click here

Video of Demco Trailer Coupler - Cast - Adjustable Channel - eZ-Latch - Silver - 2-5/16" Ball - 21K

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

Video Transcript for Review of Demco Adjustable Trailer Coupler - eZ-Latch Coupler Only - DM14040-52

Hi there, I'm Michael with Today, we're gonna take a quick look at this Demco trailer coupler. This is gonna provide the connection point for your 2 5/16 inch hitch ball so that you can tow your trailer with your tow vehicle. This does have an easy latch mechanism that's going to ensure a nice, simple and secure hookup and disconnect. So rather than all the hassle that you ordinarily have to go through to get connected, this is going to allow you to hook up. With the latch in the closed position, you just drop the coupler over the hitch ball and the latch will snap into place and you've got a nice, solid connection onto your hitch ball there.

And then to disconnect, you just simply lift up that latch, and we'll pull right off. So very simple operation to make sure that you're gonna have a nice and secure connection. This is made in the USA of a cast steel construction, so it is gonna be very durable for you. It's gonna provide a weight capacity of 21,000 pounds and it is SAE J684 certified, so you can trust it is going to hold up well and do a good job for you. It does have this silver powder coat finish.

It's gonna offer excellent corrosion resistance. It has a 500 hour Salt Spray rating, so it is gonna be great for your marine applications if you're wanting to put it on your boat trailer and that sort of thing. The latch handle does have a nice, low profile design, and it is constructed of a durable polymer nylon resin composite. And so it is going to be corrosion proof and impact resistant, so it will hold up well as well. I'll give you a few measurements here.

So you can see our overall length, we're looking at just over eight inches, we'll call it 8 1/8 of an inch long. Our width is just shy of three inches. We'll say 2 7/8 of an inch wide. So this is going to very easily bolt into a three inch-wide adjustable channel bracket so that you can change your couplers height depending on the height of your trailer so that you can make sure your trailer's gonna be riding level. The channel bracket and the mounting hardware are sold separately.

You can find those both here at We do also have the option, we've got this little pinhole here that is 3/8 of an inch diameter pinhole that you can pass a locking pin through if you want to lock this onto your ball and make sure that no one can come along and easily disconnect and take off with your trailer, that sort of thing. That 3/8 of an inch diameter lock pinhole, you will need a minimum span on your lock of three inches to clear that so that it will connect on either side of the coupler there. So just an idea for some extra security. Again, that is sold separately as well. And so you would have to purchase that here at etrailer if you're wanting to add in that extra security feature. But if you are looking for a very simple way to get your trailer connected to your 2 5/16 inch ball, then this is gonna be a great way to go. And that completes our look for today. Again, I'm Michael with Thanks for watching.

Customer Satisfaction Score:

Customer Reviews

Demco Trailer Coupler - Cast - Adjustable Channel - eZ-Latch - Silver - 2-5/16" Ball - 21K - DM14040-52

Average Customer Rating:  4.8 out of 5 stars   (497 Customer Reviews)

Cast ball coupler is made of sturdy steel and has a durable silver powder coat finish. Composite eZ-Latch ensures fast, easy, secure hookup and disconnect. Adjustable channel bracket and mounting hardware sold separately.


I have been using this on my 15,400# trailer since purchased no issues.Easily locks and unlocks .


Best trailer hitch for the price, Very solid and easy to use and makes hook up a breeze. Highly recommended


The coupler came quickly and fit perfectly. So much better than the original.
I will make sure all my trailer business will go to etrailer.

Joe D.


It continues to perform like it was new. I will never have a trailer without one!


Replacing a sloppy 21K pintle with this hitch, pintle came with a trailer I bought used so this will be a quiet replacement to pair with my B&W Tri-ball I bought a couple years ago with etrailer.


Size, fabrication is great. Easy installation and function is very good. Should last and last.


This hitch bolted right up and works gr eat


Trailer coupler was easy to install,
over tow ball and locks with ease.
I’ve ordered other trailer parts from E Trailer and they always have shipped quickly and parts have always been what’s specified on their website.
And their videos are very helpful when ordering parts.
I highly recommend ordering parts from this company.


Great quality coupler, easy hookup and release.


I bought this coupler to replace my old rusty one. Coupler fit perfectly. Very happy with how this works!




Quick shipping and quality product











The coupler that came with our teardrop did the job, but getting hooked up and secure on the ball was a real pain that would take multiple attempts to reposition it before it dropped fully in place. I like the Demco eZ-latch. So much better. I uploaded 3 photos: 1) original coupler, 2) trailer frame with new holes drilled and old holes filled with Bondo, 3) Demco coupler in place. The changeover was very easy.


I’m a 75 year old disabled woman who was about to give up traveling due to the efforts to hitch and unhitch my trailer. I got this new hitch installed and it changed my life; it is effortless. I’m on the beach now while a winter storm is raging around the U.S. thank you so much for a hitch that changed my life.


Very good quality, construction, and finish. This was used to replace a 5000# rated coupler on my RV trailer that was just not strong enough. It has an extra 2-3" of length than the old coupler so make sure your safety chains have enough length to accommodate the extra length. One bonus for me was that the extra length was just enough to allow me to open the back door of my SUV with the trailer hitched (which I couldn't do before). The DEMCO coupler does take a 2 1/2" wide hitch pin /lock which is different than most couplers.


Heavy duty for sure. Drilling 1/2” holes in 1/4” thick angle iron on the trailer required more than a hand drill, but other than that installation was simple. Removing the original coupler was a chore because it was welded on both top and bottom. I had to use a hacksaw (3 blades), 2 lb mallet, large crowbar, steel chisel, grinder. Fortunately I had all that, and I’m very pleased with the result.

Show More Reviews

See what our Experts say about this Demco Adjustable Trailer Coupler

  • Recommended Lock for Demco Trailer Coupler - Cast - Adjustable Channel - eZ-Latch - 2-5/16"
    The best locking option we have for the Demco Trailer Coupler part # DM14040-52 is a pin lock. For this, I recommend the etrailer Coupler Lock part # e98888 which installs into the small pin hole on the side of the coupler. The pin lock will stop either a hitch ball from being coupled to the trailer or stop a hitch ball from being removed from the coupler, it can also be used as a failsafe while towing. Unfortunately, due to the design of the lock I don't think there's a surround style...
    view full answer...
  • Bolt Hole Size Spacing, and Channel Metal Thickness for Demco 21K Trailer Coupler
    First, the thickness of the metal channel that the Demco trailer coupler # DM14040-52 is going to bolt onto will be 1/4 inch to 3/8 of an inch thick. Or you could split the difference and say 5/16 inches. As far as the size channel, it is designed for a 3 inch wide channel such as # DM59602 which would be welded to the trailer. The holes are spaced 2 inches apart on center. The bolt holes are slightly larger than 5/8 inch diameter for use with 5/8 inch bolts, # PS024202.
    view full answer...
  • Replacement Inner Slide and Coupler for a Demco DA91 Surge Actuator
    The Replacement Inner Slide for Demco DA91 Actuators # DM12808-97 replaces the inner slide for your Demco DA91 brake actuator and would allow you to use the Demco Trailer Coupler # DM14976-52 for a 2" coupler or the Demco Trailer Coupler # DM14040-52 for a 2-5/16" coupler. The Slide Repair Kit for Demco Hydraulic Brake Actuators # DM5942 is the correct slide for your DA-91 if you are needing that.
    view full answer...
  • Mounting Bolt Pattern Dimensions for Adjustable Demco Trailer Coupler
    The mounting bolt pattern for the Demco Trailer Coupler # DM14040-52 measures 2" apart on center (see attached). This installs with 5/8" bolts which you can acquire with the Kit # MBT58500-LN58 which comes with 1 bolt, washers, and a nut.
    view full answer...
    Image 1 for

Do you have a question about this Adjustable Trailer Coupler?

Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Amanda M
Updated by:
Amanda M
Employee Cole B
Installed by:
Cole B
Employee Michael B
Installed by:
Michael B

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