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  1. Straight Tongue Trailer Coupler
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  3. 2-5/16 Inch Ball Coupler
  4. 3 Inch Channel
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Demco Channel Tongue Trailer Coupler - Silver - 2-5/16" Ball - 3" Channel - Bolt On - 21K
Demco

Demco Channel Tongue Trailer Coupler - Silver - 2-5/16" Ball - 3" Channel - Bolt On - 21K

Part Number: DM15931-52
In Stock
$142.39
Straight Tongue Trailer Coupler
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Straight-tongue coupler is made of sturdy steel with a silver powder coat finish, ideal for marine applications. eZ-Latch ensures fast, easy, secure hookup and disconnect. Designed to bolt onto your 3" wide trailer tongue. 4-Hole bolt-on case. Great Prices for the best straight tongue trailer coupler from Demco. Demco Channel Tongue Trailer Coupler - Silver - 2-5/16" Ball - 3" Channel - Bolt On - 21K part number DM15931-52 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (298)
  • Q & A (0)
  • Videos (2)
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Demco Straight Tongue Trailer Coupler - DM15931-52

  • 2-5/16 Inch Ball Coupler
  • 3 Inch Channel
  • Standard Coupler
  • Bolt-On
  • 21000 lbs GTW
  • Auto Latch
  • Marine Grade
  • Demco
  • 4-Bolt

Straight-tongue coupler is made of sturdy steel with a silver powder coat finish, ideal for marine applications. eZ-Latch ensures fast, easy, secure hookup and disconnect. Designed to bolt onto your 3" wide trailer tongue. 4-Hole bolt-on case.


Features:

  • Channel tongue coupler lets you hook up your trailer to your tow vehicle
    • Provides connection point for hitch ball
  • Silver powder coat finish offers excellent corrosion resistance
    • 500-Hour salt spray rating - great for marine applications
  • eZ-Latch coupler 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
  • Heavy-duty steel construction
  • Bolt-on installation - hardware not included
  • Made in the USA


Specs:

  • Ball size: 2-5/16"
  • Weight capacity: 21,000 lbs
  • Mounting: 3" wide channel tongue
  • Diameter of lock pin hole: 5/16"
    • Minimum span needed for pin lock: 3"
  • 1-Year warranty


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

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.


Demco Coupler Cutaway

Unlike most couplers, which have a pin hole through the handle latch, the eZ-Latch coupler features a hole through 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 straight-tongue coupler features a durable silver powder coat finish that is designed to limit rust and corrosion. This coat 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 a durable composite material that's corrosion-proof, allowing it to withstand whatever the road and the elements dish out.



15931-52 Demco Channel Tongue Trailer Coupler - Easy Latch - Silver - 2-5/16" Ball - 3" Channel - Bolt On - 21K





Video of Demco Channel Tongue Trailer Coupler - Silver - 2-5/16" Ball - 3" Channel - Bolt On - 21K
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for A Closer Look at the Demco Channel Tongue Trailer Coupler

Today we're going to take a look at the Dem co EZ Latch Channel Tongue Trailer Coupler, for a two and five-sixteenths diameter hitch ball, and has a 21,000 pound weight capacity.Now this straight tongue coupler is made of sturdy steel construction, has a nice silver powder coat finish over it to offer excellent corrosion resistance. It does meet 500 hour salt spray rating so it's great for marine applications.The channel tongue coupler will let you hook up to your trailer to tow your vehicle. And again, it provides the connection point right up here for your two and five-sixteenths diameter hitch ball.Now the nice feature on this is is it uses the easy latch coupler mechanism to ensure a nice, fast, simple, secure hookup and disconnect. This will basically let you hook up when the latch is in the closed position. All you have to do is just drop the coupler over the hitch ball and the latch will snap into place.Just to demonstrate that I happen to pull a two and five-sixteenths diameter hitch ball. So you can see when you put it over there and then you push down, it'll automatically latch onto it, snap into place and hook to your hitch ball, just like that.To release it, all you do is pull up on this easy latch handle all the way and remove it right from the hitch ball.

So simple as that. So with this latch closed, all you have to do is put it on there, push down, and it locks into place.Our handle on this is a corrosion proof polymer, nylon resin latch handle. It's durable, impact resistant. And if you want to lock this to your hitch ball, this hole right over here is a five-sixteenths diameter hole. It'll allow a five-sixteenths diameter coupler lock pin to slide through there, come through the other side, put the lock on it.

Keep anybody from removing your coupler from your hitch ball. Now the minimum span that's needed on the coupler lock is going to be that width, which is about three inches.This is a bolt-on installation. You can see right back here as the four bolt holes right here on the case. Now the installation hardware to install this are not included. These parts are made in the USA.

Again, the mounting on this, it's designed to fit onto a three inch wide straight channel coupler. So you can see if we put a ruler on that, measure the inside, it's right at three inches. The hitch ball size this fits on is a two and five sixteenths diameter. And the weight capacity is 21,000 pounds.But that should do it for the review on the Dem co EZ Latch Channel Tongue Trailer Coupler, for two and five-sixteenths diameter hitch ball.

Customer Satisfaction Score:

Ratings & Reviews

4.8

298 reviews
Review sort icon
Straight-tongue coupler is made of sturdy steel with a silver powder coat finish, ideal for marine applications. eZ-Latch ensures fast, easy, secure hookup and disconnect. Designed to bolt onto your 3" wide trailer tongue. 4-Hole bolt-on case.

by:

Always great service and fast delivery! Tongue coupler and wheels and tires made a big difference!



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Looks great and should work well



by:

It has been a perfect upgrade and replacement for my 27ft enclosed snowmobile trailer! The EZ-latch function is a great feature! Highly recommend this hitch!



by:

Purchased to replace the “surge setup” on my 24 ft boat trailer= replace the neck, go with electric brakes....much better setup, and NO u will not have issues (being electric) when backing into the water. Much cheaper than fixing the worn out surge brake system. Great product / A+ customer service / much cheaper than any competitors price!



by:

Since I haven't put on the trailer I have very little to say. That said it's very heavy and nice looking.



by:

This replacement fit right on and bolted in place within 5 minutes. Probably would have been faster had I used power tools. I like the new ball latch much better. I have provided 2 photos for your viewing pleasure. First one without the product on and the second with the replacement attached and the old one setting on top. I want to say that George J provided excellent communications from the moment my order was processed all the way to delivery. etrailer by far has the best price & service. I would do business with them again in a heartbeat!!



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Exactly what I neede on my boat trailer.The hitch is easy to use and it was a great price



by:

Best and easiest trailer coupler I have ever used and I have been trailering boats for 63 years!



by:

Natalie done a excellent job answering my questions and helping with my order.



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Appears to be a high quality product. It's painted which was a pleasant surprise. Latch operates smoothly. Super easy install. Shipping took maybe 5 days to SE Florida. I would purchase this again.



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Demco make great strong product



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Well made. Very strong. Functions well.



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Demco Channel hitch is great, it I the only one for me, easy latch, easy unlatch.



by:

Fits perfect no slop or play. Only issue is shipping but that was our favorite most expensive shipping organization around USPS.



by:

This trailer coupler is exactly what I was looking for. Heavy duty coupler, easy to lock and unlock. I highly recommend this product if you are looking for a great coupler

William profile picture

William

5/27/2025

This coupler works excellent to this day. I am currently buying another one for my other boat trailer. This is a great solid trailer coupler and very heavy duty.


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Written by:
Kristina F

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