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  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 # DM15791-52
Our Price: $95.18
Adjustable Trailer Coupler
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Cast ball coupler is made of sturdy steel and has a durable silver powder coat finish. Metal 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 DM15791-52 or order online at etrailer.com. 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.
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  • Reviews (522)
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Demco Adjustable Trailer Coupler - DM15791-52

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

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


Features:

  • 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
  • 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


Specs:

  • 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 through body: 3"
    • Minimum span needed for pin lock through latch: 1-1/8"
  • 1-Year warranty


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


eZ-Latch Coupler

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

Unlike most couplers, which only have a pin hole on the handle latch, the eZ-Latch coupler features a hole on the latch and 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.



15791-52 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 Demco Adjustable Trailer Coupler - Coupler Only - DM15791-52 Review

Today we're going to be taking a look at the Demco trailer coupler. This is a cast ball coupler that lets you hook up your trailer to your tow vehicle. It's going to provide a connection point for a 2 5/16" hitch ball. It's going to feature your easy latch mechanism that's going to ensure simple, secure, hookup and disconnect. Simply lets you hook up when the latch is in the closed position. All you got to do is drop the coupler over the hitch ball, and then the latch will automatically snap into place, and it'll engage the hitch ball.

If you want to do it the traditional way with the latch in the open position, this coupler offers that feature as well. Again, the easy latch design lets you hook to your hitch ball with the latch in the closed position, and it engages automatically. When it comes to mounting, this is designed for an adjustable channel mount. It's got that design to it that's going to let you change the coupler's height depending on your application. Your channel bracket and mounting hardware are sold separately. When it comes to the hardware, we want to recommend using part #DM6166.

It's available, right here, at etrailer.com. This is made from a sturdy steel construction. It's going to feature a really nice silver powder coated finish. It's going to do a great job at resisting rust and corrosion, looking nice, and lasting for a long time. It's going to feature a 500-hour salt spray radium which is going to make this ideal for marine applications. It's SAE J684 certified.

This is designed for a 3" wide channel bracket. We can tell that by taking a measurement, here, at the backside. You can see that's going to measure right around 2 7/8, so it's going to fit perfectly inside the 3" wide channel bracket. Again, it is designed for a 2 5/16" hitch ball. It's going to offer a weight capacity of 21,000 lbs.

The overall length of our coupler measuring from back to front is going to give us measurement of about 8 1/8" long. You can see the wedge mechanism right there. Open and close the latch, and you can see how that controls the wedge. Another neat thing I want to point out is this unit's going to feature two lockable, or pinhole, locations for a coupler lock. You're going to have your traditional one, right here, on the latch, that would prevent the latch from opening up. If you're interested in a coupler pin and clip, or pin and lock, those are going to be sold separately. They are available, here, at etrailer.com. You're going to have this location, right here, and you're going to have a location, down here, that actually locks the wedge into place. That way nobody could connect it to their hitch ball, and it can't become disconnected when it's connected to your trailer, to your hitch ball. If you want to use this location, right there, these holes are going to have a diameter of 5/16". You're going to need a usable pin length, or span, of 1 1/8" for this location. For this location, you're going to need a usable pin length, or span, of 3". That's going to do it for today's look the Demco trailer coupler for a 2 5/16" hitch ball.


Customer Reviews

Demco Trailer Coupler - Cast - Adjustable Channel - eZ-Latch - Silver - 2-5/16" Ball - 21K - DM15791-52

Average Customer Rating:  4.8 out of 5 stars   (522 Customer Reviews)

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

by:

Exactly what was advertised.



by:

Great coupler, although it doesn't fit on the trailer I bought it for as my trailer only has a 2 3/8" tubing instead of 3".

Etrailer Expert

Jenny N.

6/19/2023

Hey I am sorry that the coupler is not a fit for you. I checked and none of the couplers that we have to offer would fit, they all have a span of 2.86 inches to fit into a 3-inch channel.



by:

switching our trailers from pintle to ball. This made for a nice transition and with great quality



by:

Product itself is GREAT! It came with no manual or instructions or details, or even a factory box. Just cam in plain box with nothing? The second item came in a box that looked like it went through a dozen yard sales and returns. Box was held together with tape. Product inside was very nice shape.



by:

We have ordered two couplers and the the qualiy and price cannot be beat.



by:

Quality product and price. The followup e-mails always kept us informed of back orders, and when products should arrive.



by:

It was exactly how it was described and showed up fast.



by:

Fast shipping and easy to order will buy again



by:

Excellent product and Helen was very helpful in getting right product . Excellent company



by:

Fitment is better than stamped steel version. Great quality for the price!



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Very nice works great.



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Awesome coupler!!! Lookin for a robust coupler…. Look no further!



by:

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.



by:

It is the best used yo have a the older style i was always worried if it had latched correctly but with this latch system I dont have to do anything i dont even have to see it i can just hear it click when its latching on its own and i know its right dont forget to buy the pin for it i have actually bought two one for each of my trailers



by:

Great upgrade to my heavy trailers. Would be 5 stars if the locking pin hole would accept a larger diameter lock or a padlock.



by:

The ease of latching and not having to lift the latch handle is very nice and unlachine it's a breeze, works very well very happy with the coupler



by:

The hitch is excellent for our 14,000lb equipment trailer.
Only issue is the hole for the padlock was too small for any locks and we drilled it out to accommodate one.
Con- Shipping was not very good. It was returned to the dealer twice because it was sent via United Postal Service and our shop has not Post office box. Only a location address. The USPS does not take packages to our location. We could not seem to get the package sent via UPS or FedEx to us.
Only time this has happened when ordering from etrailer.


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See what our Experts say about this Demco Adjustable Trailer Coupler

  • Locks and Channel Recommendation for Demco Trailer Coupler # DM15791-52
    The Demco Trailer Coupler # DM15791-52 does not come with the locking pins or the mounting pins. The mounting pins will need to be supplied by you. Grade 5 mounting bolts must be used to achieve the 21,000-lb weight capacity and we do not carry them. For the body of the coupler the lock you'd need is # e98888 and for the pin you'd want # e98883. If you select keyed alike on the drop down menu you'll be able to order them both with the same key number. For a channel to use with this you'd...
    view full answer...
  • Difference Between Demco 15791-81 and 15791-52
    What you noticed is correct. The only difference between these two couplers is the color. The # DM15791-52 is silver and the # DM15791-81 is black. Even with a different color finish they both offer the same 500-hour salt spray rating.
    view full answer...

Do you have a question about this Adjustable Trailer Coupler?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Amanda M
Written by:
Amanda M

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