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  1. A-Frame Trailer Coupler
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  3. 2-5/16 Inch Ball Coupler
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Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 15,000 lbs

Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 15,000 lbs

Part Number: BD44150WH301
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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 BD44150WH301 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 - 15,000 lbs. A-Frame Trailer Coupler reviews from real customers.
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  • Reviews (42)
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  • Videos (2)
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Bulldog A-Frame Trailer Coupler - BD44150WH301

  • 2-5/16 Inch Ball Coupler
  • Bolt-On
  • 15000 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 bolt-on 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"
  • Hole diameter for jack: 2-1/4"
  • Length: 18"
  • Capacity: 15,000 lbs
  • Limited 5-year warranty

44150WH301 Bulldog Wedge-Latch Cast Head A-Frame Bolt On Coupler - 15,000 lbs

California residents: click here

Video of Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 15,000 lbs

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

Video Transcript for Bulldog Heavy-Duty Cast Head Coupler Review

Ryan: How's it going Ryan here at Today we're going to be taking a look at the line of bulldog heavy-duty cast head couplers with a wedge latch. This is going to be a great heavy-duty replacement option for you especially if your old one like we have here is rusty, bent, or even broken. Now, what I really like about this one is the fact that it has pre-drilled holes in it and that's going to allow us to bolt it on which can make life a lot easier because most of us don't either have the equipment or the know-how to actually weld a new coupler on your trailer. Now, one of the things I really like is the latch mechanism. It's really easy to use and sweet to operate.

You simply just pull your pin out and it's going to stay locked in the closed position.We're going to have a trigger down here and when we lift that up, we're able to raise a latch into the open position. There's going to be a hole here too so to keep it open, you can just take our pin and reinsert it. So to give you an example, whenever we pull back our wedge, that's going to open up, allow us to get our ball in so when we close it, that wedge is going to hold that ball in place. Now, the only thing I would really change about this is the fact that it does not come included with any hardware. But other than that, it's very simple to install.Speaking of which let's go ahead and put it all together now.

To begin your install, you're going to want to properly support the front of your trailer using some suitable jack stands because we're actually going to have to remove our jack. Our jack is going to be held in place with three bolts and so what I'm going to do is take a nine 16 inch wrench, put on the bottom side to prevent the nut from spinning and remove each bolt. Once we have all the bolts removed and simply slide it out and set it off to the side. Now, at this point, we can go ahead and remove the coupler itself. Now this is going to be held in place by five bolts on each side.

So again, I'll use my wrench to hold the nut on the backside and we can take all the bolts out.Once all these are out on one side, we'll just repeat that same process on the other side. With all the hardware removed now we can just lift our coupler off and set it to the side. I went ahead and used a wire brush just to kind of clean up our surface here and in our case, since our trailer frame is made from aluminum and the coupler made from cast and I'm going to do is just put a little layer of anti-seize on our surface, just to help prevent any corrosion. We can take our new coupler, set it in place and put our bolts back through. Now I'm using some new hardware, which I would recommend, however, it is sold separately.Now I'm only going to put the back four in on each side for now because this hole is where I'm going to attach our safety chains.

Now with the back four bolts in place on each side, we can go ahead and snug all of our hardware down. Now to attach our safety chains, what I'm going to do is take the end of our chain, a bolt with a flat washer on it, push it through and on the other side, let's take another flat washer, run that through. Then we can simply just put it through that last hole and secure it on the backside. Once we have a hand tight, you can then go ahead and snug it down. Let me go ahead and repeat that process on the other side. Now we can go ahead and torque all of our hardware down.Once everything is torqued, you can go ahead and drop your jack back through. Rinse all the hardware and tighten everything back down and that'll finish up our look at of the line of bulldog heavy-duty cast head couplers with the wedge latch..

Customer Satisfaction Score:

Customer Reviews

Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 15,000 lbs - BD44150WH301

Average Customer Rating:  4.8 out of 5 stars   (42 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.


Easy installation, wish it included the grade 8 bolts but otherwise great product fast delivery an extremely satisfied. Installed in minutes.


Working good so far


Helpful people at etrailer. They told me the info they needed to set me up with the correct coupler. I did my homework, got back with them and Angie had my trailer coupler delivered to me the next day. I will definitely call them first always for trailer needs.



Wonderful! Thank you for asking.


Non-product specific stuff first... has to have some of the best customer service out there, got a delay on this being a backordered part, got an updated email that it was going to be almost a 2 month delivery delay but I needed this specific hitch so I was in a bind. You guys came in good with an under promise, over delivery since I got it well before the estimated delivery date. That doesn't seem to exist in retail anymore and you've earned my future business for that! The hitch in particular worked about as well as I hoped to replace my old Fulton hitch that the clamp had rusted away on. I still have some work to do to replace the load levelers and put a new tongue jack on but I know where I'll be ordering that jack from for certain! Thanks etrailer!


Great quality product! Huge improvement over the Bulldog Collar-Lok style coupler it replaced on our horse trailer. Completely eliminated the damage to the hitch ball caused by the original coupler.


This a heavy-duty connector that I am using to replace a broken one on my flatbed trailer. This unit is designed well and fit as it should onto the A-frame of the trailer.( Once I got the old hitch cut off with a grinder!)
The ball receiver is very solid and the latch hitch, I think, will be better than what I had, which was a wrap-around type that broke.

I plan on adding a couple of spot welds just as insurance, although using 12 Grade 8 bolts will certainly hold the thing just fine.


excellent customer service and speedy d elivery


The product choices allowed me to choose exactly what I needed to replace my trailer coupler with a new and better one plus a new and better jack. Once I cut off the old coupler, fitting the new one was easy. I really liked the bolt-on concept which allowed me to do the repair at home without having to weld one on where I don’t have access to a welder. I am a very experienced welder but don’t have a welding machine at home.


I am now in the process of removing the old (El Cheapo) coupler that came with my (El Cheapo) tow-behind travel trailer and installing this serious-serious "Bulldog" coupler because I never again hope to be out with a crowbar trying to disconnect my tow vehicle from my trailer! A bit of dignity afforded by replacing a $33 item with a $142 item is, as is said, priceless. I read the earlier reviews and, as an engineer, will be surprised if I ever again need that crowbar with this fine piece of machinery!!!


I received the coupler in a few days as promised. I removed the old Fulton unit and replaced it with the Bulldog from I was expecting some modification to make it fit. This head coupler lined up perfect with the rails and the 10 bolts on the side. Install went smooth with the addition of the bulldog trailer jack.

This fit the Featherlite Livestock trailer


The original one I had on my Featherlite enclosed car trailer cracked and I wanted one that had the holes predrilled to align with the existing holes in the A frame. Etrailer had the exact match and it was a Bulldog! Needed it next day due to heading out to race and it was on my door step by 10:30 and fit like a glove. Real nice piece and great customer support...Thank You!!!


Transaction with etrailer was flawless and they shipped it very quickly. Thanks!



Not a problem on the review. Im glad to help. I recall I was mainly writing the review because of e-trailers service, which is outstanding. The coupler, on the other hand, I dont really like. We have purchased about two dozen of these couplers from our main vendor over the past year and a half for a special line of trailers we are doing. *I purchased that one from e-trailer since we were in a pinch with our main vendor. These couplers, while appearing to be very heavy duty, they have a flaw that is pretty frustrating. If the customer happens to forget to unlock the coupler before letting their jack down, or vice-versa when hooking up, this puts a bit of stress on the bolt inside the locking mechanism. This bolt comes pre-bent from the factory and the design, in my opinion, is not good. The bolt is bent on the threads of the bolt and this weakens the bolt. The bolt needs a very tight tolerance angle in order for the locking mechanism to function properly. Ifwhen the customers hitch ball jams up in there in any way, after repeated times, the bolts bent angle changes which greatly affects the travel of the locking mechanism. Often it results in a complete failure of the coupler itself since the locking mechanism is now junk. All that said...I would not recommend this coupler. We are only continuing to use them since it is what our marketing folks specd and we have a signed contract and were only building a few more and then were completely done with that. Sorry for the long story. I hope its helpful info for you.


Item ok. Buyers need to determine where they plan to attach there safety chains. The Fulton Unit I was replacing had a better location for safety chain connection. The two 1/2 holes dont allow for easy chain connection die to very limited space.


Nice strong trailer coupler. We replaced our original equipment coupler on a Hallmark trailer. The new one is approximately 1/4" galvanized steel.


Excellent coupler! We welded up the jack hole and welded each of the bolt holes and the coupler is rock solid. The latch is very positive and the construction and fit exceeded my expectations! Thanks and I will be a repeat customer.


As advertised! Holding up well, but I'm in Florida so I spray WD40 on it every few weeks. It's a challenge to install if your not a little mechanically savvy. Tight spaces and hard to get to. I'll pay the trailer guy next time and save my knuckles.


Works great, very heavy duty unit. Easier to install on an existing trailer than weld on type. I highly recommend this item


Yes delivered and installed. Thank you


Lisa is awesome! Great customer service, shipping was fast. Reputable company!!! Will be doing business with from now on. Thank you!


Easy to install heavy duty

service fast and free shipping best prices


Excellent product more than heavy duty . Thank you


Nice and beefy works everytime


The people at made it very easy to return a part and get the correct one out the very next day. I just handed the package to the UPS driver for return and that was it.
Great products, great price, great service!




Customer service was excellent. Very much appreciated and on time.

Show More Reviews

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

  • Coupler Lock Recommendation for a Bulldog A-Frame Coupler 44150WH301
    The best lock recommendation we'd have for your Bulldog Coupler part # BD44150WH301 would be the Fastway Lock part # FA86-0015-316. Although this is a universal style coupler lock it's design allows it to fit basically all coupler styles well enough to be a very effective coupler lock and it can be ordered "keyed alike." I attached a review video for this lock for you to check out as well.
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  • What Hardware is Needed for the Bulldog Heavy-Duty Cast Head Coupler With Wedge Latch
    The Bulldog Heavy-Duty A-Frame Coupler, # BD44150WH301, does not come with the attachment bolts. I have attached two images showing the bolt pattern measurements and the bolt hole sizes. I would recommend using grade 8 bolts, but grade 5 is acceptable and the amount of bolts you will need will depend on how you plan on mounting the coupler. I would recommend using the bolt holes on the side of the coupler to mount to your trailer. I spoke with my contact for Bulldog and he said you will...
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  • What Grade Bolts for Bulldog Heavy-Duty Cast Head Coupler and Can it be Welded to Trailer Frame
    I took a look at the instructions of the Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch # BD44150WH301 and it specifies using grade 5 bolts with lock nuts. However, there is not a specified length for the bolts, and that will simply depend on the length you need to properly secure the bolts to your trailer. This is a bolt-on coupler but there is the same coupler which can be welded on if you prefer to go that route, the Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch # BD44150WQ317....
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  • Installation of Bulldog Heavy-Duty Cast Head A-Frame 2-5/16-Inch Coupler # BD44150WH301
    Bulldog Heavy-Duty Cast Head A-Frame 2-5/16-Inch Coupler # BD44150WH301 is intended for standard 50-degree a-frame trailer frames. This unit is a bolt-on item and its rated 15,000-lb capacity is based on it being installed using all mounting holes to evenly distribute forces. If you were to use only 8 of the 10 mounting holes there would be some undetermined loss of capacity. It is not possible to exactly predict this drop in weight capacity. I recommend drilling the additional holes, or...
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  • Bulldog Heavy Duty Coupler to Replace Fulton Heavy Duty Coupler
    I attached a picture of the mounting holes for the Bulldog Heavy-Duty A-Frame Coupler, # BD44150WH301 that you referenced for you to check out so that you can compare them to the ones on your current coupler. Based on the picture you submitted this coupler should work as a replacement since Fulton and Bulldog are sister companies. Typically safety chains will attach to the trailers frame instead of the coupler. The idea is that if the coupler where to break off the safety chains would...
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  • Bolt-On A-Frame Trailer Coupler Rated for At Least 14K and with a Center Hole for a 2-1/4 Inch Jack
    We have a bolt-on A-frame trailer coupler rated for 15,000 pounds, # BD44150WH301. It is the only bolt-on A-frame coupler we currently offer. It takes a 2-5/16 inch ball. The hole will accept an industry standard A-frame jack mounting pattern (holes 3 inches apart on center) and round tube with 2-1/4 inch outer diameter.
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  • Replacement Coupler for Featherlite 1998 Horse Trailer
    Thank you for the picture of your coupler, because I can see what you have now we know that the Bulldog Coupler part # BD44150WH301 does fit and will work great.
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  • Adding Different Bolt-On A-Frame Trailer Coupler to Rusted Trailer in the Woods
    Well, that is a coupler, though it is in bad shape. It is a bottom mount or underslung coupler like # CA-5335-B. You can check the ball cavity to see if it is in working order but all that corrosion makes me think that using its coupler is not going to work. In order to use a regular coupler you will likely have to cut off that bottom mount coupler so a new coupler will be able to be lowered on the ball. The jack will also have to come out to be able to install a new coupler. As long...
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  • Mounting Hole Spacing of Bulldog A-Frame Coupler
    The Bulldog Heavy-Duty Cast Head Coupler # BD44150WH301 has the same standard mounting hole dimensions as the Demco DM13205-52 that are 1-1/4 inches from the top. You said you believe yours are 1-1/2 inches so if you are going to replace the coupler I recommend taking it off and double-checking; you may find that the holes are 1-1/4 inches. Otherwise there are weld-on options available that you may want to consider; I've added a link to our selection of A-Frame couplers that use a 2-5/16"...
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  • Fulton Coupler to Replace Bulldog Coupler BD44150WH301
    That specific coupler is no longer available, the closest thing we have is the Bulldog part # BD44150WH301 which is actually made by the same company as Fulton.
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  • Bolt-on Trailer Coupler to Replace Bulldog # BD028463
    You could drill into the Bulldog # BD028463 and make it a bolt-on but that's not really ideal. We don't have the exact match in a bolt-on model. We do have part # BD44150WH301 for a bolt-on Bulldog coupler. It has a higher rating but the price tag is quite a bit more. Another option is a Demco coupler. Part # DM16680-52 has even more weight capacity and a nice latch. It fits the same ball size and bolt pattern as well.
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  • What is the Highest Capacity 2-5/16-Inch A-Frame Trailer Coupler
    We offer three cast head 2-5/16-Inch A-Frame Couplers that carry a higher weight rating than the 14,000-lb-rated Fulton # F44314R0303 coupler that you referenced. The link provided will show you each of these 15,000-lb-rated wedge latch couplers from Bulldog. Two of these are weld-on couplers but a bolt-on unit is also available, part # BD44150WH301, which includes an attachment point for a round utility jack. The two weld-on units are both 18-inches in length and share common features...
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  • Trailer Coupler Solution for a 30 Degree Trailer Frame
    All of the A-frame couplers we sell are designed to fit 50 degree frames. As long as you, or the person doing the welding, is a qualified welder who knows what they are doing you could use the # BD44150WH301 on your trailer and then have wedges used so that the angle of the trailer and coupler match up.
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  • Yoke Style Coupler Replacement for 2-5/16 Inch Hitch Ball Compatibilty
    Unfortunately we don't have a repair kit at this time. If you choose to replace the entire coupler, I recommend the Bulldog Collar-Lok Coupler w/ Low-Profile Latch - 2-5/16" Ball - A-Frame - 12,500 lbs # BD028499. For a bolt on option, you may be interested in the Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 15,000 lbs, # BD44150WH301, that has the wedge latch.
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  • Trailer Jack and Coupler Recommendation for Featherlite Bumper Pull Trailer
    The Bulldog coupler part # BD44150WH301 is a really great choice for your Featherlite trailer. It'll be very reliable and easy to use so you'll really like it. Then for an a-frame jack we have the zinc coated etrailer A-Frame Round Jack # TJA-5000S-B which has a 5,000 lb capacity. Like I mentioned this has the zinc coating you are wanting which will fight corrosion and has more capacity than you'll need which means it will raise and lower easily. Trailer jacks are rated for their lifting...
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  • Can Bulldog BD44150WH301 Cast Head Install to A-Frame Constructed of Square Tubing
    As long as the frame of the trailer is a 50º A-frame, the Bulldog Heavy-Duty Cast Head Coupler, part # BD44150WH301 will work regardless of if the trailer frame is constructed of rectangular or square tubing. A weld-on version is also available as part # BD44150W0317. I've linked to product videos for both couplers mentioned above.
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  • Recommended Coupler For Aluminum NEO 24 NACX A-Frame Trailer
    The Sleeve-Lock A-Frame Trailer Coupler - Flip Latch - Black - 2-5/16" Ball - 12,500 lbs # CA-5296-B you were looking at is designed to be welded on and as you noticed, does not have the bolt holes available. Instead I recommend going with the Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 15,000 lbs # BD44150WH301 which will fit your NEO 24' NACX trailer perfectly and will not require you to weld the coupler on, making it a much easier install. Since your...
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  • Coupler Repair Kit for 1987 Airstream with 2-5/16-Inch Trailer Coupler
    Trailer makers like the good folks at Airstream generally don't keep track of the brand and model of coupler they install so you'll want to try to find branding and part number information stamped into the coupler on your trailer. We do have repair/rebuild kits and replacement parts for many brands and models of A-frame coupler that are displayed on the linked page. I also linked our page for 2-5/16-inch A-frame couplers, both bolt-on like # BD44150WH301 and weld-on like # CA-5400-B, in...
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  • Finish Used on Bulldog Cast Head Coupler # BD44150WH301
    I checked with my contact at Bulldog regarding the finish used on the # BD44150WH301 Cast Head Coupler, and was told that the coupler has a corrosion resistant zinc finish.
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  • Is Bulldog Heavy-Duty Cast Head Coupler Made of Cast Iron?
    The Bulldog Heavy-Duty Cast Head Coupler # BD44150WH301 is actually made out of cast steel. It also has a zinc finish in order to protect it from corrosion. This coupler has an A-frame design and mounts to a 50-degree trailer tongue. I've added a link to a video review of this product for you to take a look at.
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  • Trailer Hitch Extension For Truck Towing A Trailer and Truck Bed Camper
    I have a few suggestions for you, but we do not carry a trailer coupler that is longer than the Fulton 44150C that you already have. The simplest solution would be to replace the Convert-A-Ball cushioned ball mount that you currently have with an extended ball mount like the Curt Multi-Ball Adjustable Ball Mount, # D900. This ball mount is about 6 inches longer than most Convert-A-Ball ball mounts. Since I'm not sure what amount of rise or drop you need, I've attached a link to all of...
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  • Is There A Bolt-On Collar Lock Style Coupler For 5,000-7,000 lb Application?
    The only bolt on couplers we have meeting or exceeding the 5,000- 7,000 lb weight capacity are the Demco A-Frame Trailer Coupler w/ Jack Hole - eZ-Latch - Black - 2" Ball - Bolt On - 10K # DM14793-81 or similiar in different ball size or color. We also have the Bulldog Heavy-Duty Cast Head Coupler w/ Wedge Latch - 2-5/16" Ball - A-Frame - 15,000 lbs # BD44150WH301. Unfortunately we don't have any collar lock style couplers that aren't weld on
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  • Recommending Best Bolt-On A-Frame Coupler For 1974 Airstream Sovereign
    It sounds like you have a very unique vintage trailer! Every bolt-on coupler we carry is a 50 degree A-frame coupler. The standard dimension for trailer tongues is 50 degrees. As for a recommendation, Bulldog's Heavy-Duty Head Cast Coupler # BD44150WH301 will meet your needs and help you to achieve even more happy miles out of your rig. In case you ever need to use the same coupler and weight distribution hitch to pull something heavier, this coupler will accommodate up to 15,000 lbs GTW...
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  • A-Frame Trailer Coupler that Can be Bolted Onto a Trailer
    Bulldog A-frame trailer coupler # BD43805W0317 does not have holes on the side because it is a weld-on coupler. Coupler # BD44150WH301 can be bolted on but it is for a 2-5/16 inch ball, not a 2 inch ball like # BD43805W0317. All of the other A-frame couplers we have are weld-on applications. If you go with a weld-on coupler the welding will need to be performed by a qualified professional welder.
    view full answer...

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