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  1. A-Frame Trailer Coupler
  2. Bulldog
  3. 2-5/16 Inch Ball Coupler
  4. Weld-On
  5. 12500 lbs GTW
  6. Standard Coupler
Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 12,500 lbs

Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 12,500 lbs

Item # BD44125W0317
Our Price: $138.44
You Save: $80.55
A-Frame Trailer Coupler
Shipping Weight: 18 lbs
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Durable cast coupler features the easy-to-use Wedge Latch for simple, quick hookup and has a built-in attachment point for round, A-frame utility jacks. 1-800-940-8924 to order Bulldog a-frame trailer coupler part number BD44125W0317 or order online at Free expert support on all Bulldog products. Great prices and Fastest Shipping for Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 12,500 lbs. A-Frame Trailer Coupler reviews from real customers.
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  • Reviews (8)
  • Q & A (0)
  • Videos (1)
  • Photos

Bulldog A-Frame Trailer Coupler - BD44125W0317

  • 2-5/16 Inch Ball Coupler
  • Weld-On
  • 12500 lbs GTW
  • Standard Coupler
  • Bulldog
  • Trigger Latch

Durable cast coupler features the easy-to-use Wedge Latch for simple, quick hookup and has a built-in attachment point for round, A-frame utility jacks.


  • Heavy-duty coupler is ideal for utility, livestock, cargo and construction trailers
  • Wedge-style latch is secure and easy to use
  • Built-in jack-attachment point allows for quick, easy mounting of round utility jack
  • A-frame design mounts to 50-degree trailer tongue


  • Application: 50-degree A-frame
  • Ball size: 2-5/16"
  • Length: 18"
  • Hole diameter for jack: 2-1/4"
  • Capacity: 12,500 lbs
  • Limited 5-year warranty

44125W0317 Bulldog Wedge-Latch Cast Head A-Frame Coupler - 12,500 lbs

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Video of Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 12,500 lbs

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

Video Transcript for Bulldog A-Frame Trailer Coupler - Standard Coupler - BD44125W0317 Review

Today we're going to review part number BD44125W0317. This is the Bulldog heavy-duty cast head coupler for an A-frame coupler. This heavy-duty coupler is ideal for the utility, livestock, cargo, and construction trailers. It is designed to fit on the A-frame design trailers, and it does mount to the 50-degree trailer tongue, which is the normal measurement on your A-frame trailers. Now this is a cast head design that you can see is welded to the high-strength steel part right here that attaches to your trailer. This is a wedge-style latch or a trigger latch, as you can see right here.

As I operate it you can see it underneath there. This is very secure and easy to use. As you'll notice on the top here, on the high-strength steel section, there is a hole with three mounting holes. This is a built-in jack attachment point, which will allow for quick, easy mounting of a round utility jack on your trailer. This uses a ball size of 2-5/16".

What I'm going to show you is I've got an example of a 2-5/16" hitch ball right here. So if we put that in there, you can see as you open the latch, it would fall onto it. You let the latch go, lock it into place. And as you can see, it pretty much stays in place right there. Then to release it, just lift up on the latch, and you can remove it from the 2-5/16" hitch ball.

Capacity on this coupler is 12,500 lbs. It does come with a limited 5-year warranty. And I just want to give you an overall length of this coupler. If we go from the top of the cast head to the edge of the steel, it's going to be 18" long. That should do it for the review on part number BD44125W0317, the Bulldog heavy-duty cast head coupler for the A-frame couplers.


Customer Satisfaction Score:

Customer Reviews

Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 12,500 lbs - BD44125W0317

Average Customer Rating:  5.0 out of 5 stars   (8 Customer Reviews)

Durable cast coupler features the easy-to-use Wedge Latch for simple, quick hookup and has a built-in attachment point for round, A-frame utility jacks.


I purchased a new trailer that has a v nose. Didn't realize that the 50 degree frame rails are much shorter with the V. I have an existing weight distribution hitch that would not fit due to the short length of the frame rails. This coupler added an extra 4" of length for me to use my hitch. I purchased the weld on model because it had no holes. I transferred the existing holes on the frame rails to the new coupler and mounted up beautifully. I have not pulled with it yet but am completely happy with my purchase. Quick shipping, quality product and a good price. What more do you want?

Kim W.




Excellent customer service and prompt shipping! Thank you!!



Love it! Very well built! Every trailer should have this! Thank you!


Well made, came on time, what more can you ask for?




Looks well built, quick delivery




See what our Experts say about this Bulldog A-Frame Trailer Coupler

  • Availability of Heavy-Duty A-Frame 2-5/16-Inch Coupler with Powder-Coat Finish
    We offer a broad range of A-frame couplers in the 2-5/16-inch size. These include both bolt-on and weld-on types across many weight capacities. The link provided will let you view all. None has a powder coated finish. The only bolt-on unit we offer is the Bulldog Heavy-Duty Cast Head Coupler with Wedge Latch, part # BD44150WH301. This unit has a galvanized finish. Weld-on couplers are available in oily, primer-only and painted finishes but not actual powder-coated (baked-on) finishes....
    view full answer...
  • Is a Bulldog Collar Harder to Latch Than a Wedge A-Frame Trailer Coupler
    In regards to the Bulldog Collar-Lok Coupler w/ High-Profile Latch part # BD028463, you will indeed need to be more centered over the hitch ball in order to couple in comparison to the Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch part # BD44125W0317 which will more or less center itself with enough pressure. For that reason, I do prefer the trigger/wedge style.
    view full answer...
  • Difference Between the Bulldog Wedge and the Collar Lock Couplers
    The distance between the center of the ball hole to the center of the circle used for A-frame jacks on the part # BD44125W0317 that you referenced is 12-1/2 inches. I confirmed this with my contact at Bulldog. The advantages between the latching styles of the wedge latch in the # BD44125W0317 and the collar lock like in part # BD028499 is largely personal preference. But the wedge is easier to lock with an anti-theft device. The collar lock style is more rugged and crude design with larger...
    view full answer...
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  • Repair Kit Fulton Wedge-Latch # F670801, Fits Fulton/Bulldog Couplers for 2-5/16 Inch Balls
    The Repair Kit Fulton Wedge-Latch Cast Head Coupler, # F670801, is designed to fit the coupler # BD44125W0317 which does take a 2-5/16 inch ball.
    view full answer...
  • What is Difference Between High and Low Profile Bulldog Couplers
    The difference between the low profile latch Bulldog coupler part # BD028499 and the high profile coupler part # BD028463 is the height of the latch and it's design that pulls the collar back. It's really personal preference between the two. Whichever you would want to use would be the way to go. Only real thing to consider would be clearance. If for some reason you didn't have the clearance for the high profile you would need to go with the low profile. I attached review videos for these...
    view full answer...
  • Wedge Style Latches Vs. Trigger Latches on A-Frame Couplers
    The main difference between the wedge style latches and the trigger latches is in the capacity of the coupler. The lighter capacity couplers will use a trigger latch, whereas the higher capacity couplers will use wedge latches. For example, the Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch # BD44125W0317 that you referenced uses a wedge latch and has a capacity of 12,500 lbs. An A-Frame Coupler # CA5100B uses a trigger latch and has a capacity of 5,000 lbs. Either style will work...
    view full answer...
  • Which Couplers Do Repair Kits # F640801 and # F670801
    No they are not interchangable although they do look similar. The part # F640801 fits coupler part # F44305R0500 and then repair kit part # F670801 fits the part # BD44125W0317. Which coupler does your look like between the two?
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Adele M
Updated by:
Adele M
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

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