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Bulldog Round, A-Frame Jack - Topwind - 15" Lift - 5,000 lbs

Bulldog Round, A-Frame Jack - Topwind - 15" Lift - 5,000 lbs

Item # BD1750290317
Our Price: $63.34
You Save: 25%
Trailer Jack
Shipping Weight: 12 lbs
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Ideal for multiple agricultural and commercial applications, this standard A-frame jack features a 10-13/16" retracted height and measures 10-11/16" from the mounting bracket to the top, excluding the handle. Base sold separately. Great Prices for the best trailer jack from Bulldog. Bulldog Round, A-Frame Jack - Topwind - 15" Lift - 5,000 lbs part number BD1750290317 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (100)
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Bulldog Trailer Jack - BD1750290317

  • Car Hauler
  • Enclosed Trailer
  • Utility Trailer
  • 4001 - 5000 lbs
  • Topwind Jack
  • Bolt-On
  • Weld-On
  • Leveling Jacks
  • Tongue Jacks
  • 15 Inch Lift
  • No Wheel or Foot
  • Steel
  • Bulldog

Ideal for multiple agricultural and commercial applications, this standard A-frame jack features a 10-13/16" retracted height and measures 10-11/16" from the mounting bracket to the top, excluding the handle. Base sold separately.


  • Dependable jack is recognized as industry standard for agricultural and commercial applications
    • ASABE compliant
  • Precision-fitted parts provide exceptional stability and reliability
  • Weld-on/bolt-on bracket mounts to any standard A-frame coupler
  • Topwind handle has smooth, ergonomic design for easy cranking
    • Requires 8 handle rotations for every 1" of lift
  • Outer and inner tubes are gray-paint finished
  • Footplate or caster assembly sold separately


  • Bracket height:
    • 10-13/16" Retracted
    • 25-13/16" Extended
  • Lift: 15"
  • Clearance: 10-11/16" from mounting bracket to top of jack
  • Inner tubing diameter: 2"
  • Outer tubing diameter: 2-1/4"
  • Handle radius: 6-5/8"
  • Lift capacity: 5,000 lbs
  • 5-Year limited warranty

How to Determine the Lift Capacity You Need in a Jack

A trailer jack is designed to lift the tongue of your trailer so you can connect the trailer coupler to your hitch ball. To do this, you'll need a jack with a lift capacity high enough to handle your trailer's tongue weight.

Tongue weight is the amount of weight that your trailer applies to the back of your tow vehicle. Typically, your tongue weight should be 10-15% of your total trailer weight (trailer + cargo). In other words, a 10,000-lb trailer would have a tongue weight between 1,000 lbs and 1,500 lbs. For a trailer this size, you would need a jack with a lift capacity of at least 1,500 lbs.

It's okay to have a jack with a weight rating that is higher than your trailer's tongue weight. In fact, a jack with a higher lift capacity should operate more efficiently, allowing you to spend less time cranking and more time camping.

Trailer and Camper Jack Lift

Every jack offers a certain amount of lift or travel. Screw travel is the distance the jack extends when you crank it (or toggle it to "extend" on an electric model). Some jacks include a drop leg for extra adjustability. On these jacks, you'll see the maximum extension of the drop leg listed in the specs as well. Adding the screw travel and drop leg travel together will give you the total lift. The total lift listed above can help you determine how high this jack will be able to raise your trailer.

1750290317 Bulldog Round A-Frame Jack, Topwind, 15" Travel, 5,000 lbs - TWL 175

Replaces Bulldog BD175013

Installation Details BD1750290317 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Bulldog Round, A-Frame Jack - Topwind - 15" Lift - 5,000 lbs - BD1750290317

Average Customer Rating:  4.8 out of 5 stars   (100 Customer Reviews)

Ideal for multiple agricultural and commercial applications, this standard A-frame jack features a 10-13/16" retracted height and measures 10-11/16" from the mounting bracket to the top, excluding the handle. Base sold separately.


Solid product, smooth function, feels sturdy. BUT PLEASE NOTE: DOES NOT WORK WITH BullDog DROP LEG that is linked in related products. The diameter of tube listed for inner tube is 2”, and the BullDog BD 500377 drop leg lists outer diameter is as 1.75”…. However the two do NOT fit together. The inner tube measurement listed for the Jack is the OUTER diameter of the inner tube. Ignore the drop leg description that says it works with most manual trailer jacks. It doesnt work with this one, and I could find no bulldog manual trailer jack on the site that it will work with. Items individually seem fine, but are not compatible and are being returned.


I want to thank you guys for getting my trailer jack out to me before it was do,I sent before/after pictures to you,iam happy my trailer is happy.again thank you.

Greg A.


My jack is working great,i love it.


I over loaded my work trailer broke the stock 2000lb trailer Jack. I needed a quick replacement and found your 5000lb Bulldog A-frame. The price was great and I got it in 4 days. It took less than 5 minutes to install and its such a better quality. It spins smooth and easy with just my finger. It's everything you say it is, I'm very pleased, thank you


Arrived on time me and as described


This is a nice heavy trailer jack. I can't see anything going wrong with it.



Still working great. A little rust is building up but appears to be surface only


Although most trailers come with an A-Frame Jack, if I damage the jack or want to replace the bottom-of-the-line included jack, I prefer the Bulldog 5,000 lb jack. The jack is very stout, works effortlessly for as long as I've owned any trailer and never needs to be greased. In addition, it is designed to accept a flat foot attachment at the bottom or one of Bulldog's outstanding wheels.



Thanks for the follow-up. All the products I purchased are performing wonderfully!


Product works as intended. I especially like the folding crank handle when not in use.


Good quality jack


Jack works smoothly on my car trailer lifts trailer off the truck with a full size car on it no problem. I would buy it again. I like the folding handle feature as well



This jack still works as good as the day I installed it on my car trailer. I haul full size trucks Chevy suburbans and tahoes and the jack lifts the trailer up off my truck with the full load on it time after time. I will defenetly buy another one of these jacks if and when this one wears out and needs to be replaced.


In addition to this support plate, I ordered a Bulldog Jack and a foot plate. During my prepurchase research, completely frustrated at the lack of detailed product information available on most sites, I finely landed on I found all the information I was looking for, and the pricing was the best I had found, and e trailer offered free shipping. I placed the order and recived a follow up thank you email. The following day I received an update of the shipping status along with a tracking number. I recived my package within a week via 3-day shipping. The care given to packaging was amazing they could have sent fine China in the packaging.

I love this place and will order from here again.



Excellent heavier duty A-frame jack. Easy to install, (used the existing holes). Replaced the oem unit that came on my 2007 open car trailer that was way past its duty cycle. This is a hefty unit at a reasonable price.


Product was delivered on the third day from the order. Fit perfectly and was installed the same day as delivery. Works perfectly and much easier than the original equipment. Thank you ETrailer!



Many flawless operations. Very happy with my purchase.


Definitely a more robust construction than the original unit which came from the trailer mfg. Perfect fit installation. Easier to wind up or down than the original also. Quite satisfied.


Put heavy duty jack on car hauler. Handles trailer with 3/4 ton 4-wheel pickup as a load. Good enough for me.


Great product...quick shipping and excellent service! I will continue to use for future purchases and will recommend you to all our trailer buddies!



The Bulldog Trailer Jack is working great as the day I purchased it one year ago!


Great trailer jack. Easy to install and easy to use. Makes lifting and lowering my trailer very easy. Still works as good as when I got it!


I bought the A-frame Jack-Top-wind-15" Lift-5000 lbs with the detachable footplate. Received in a week and it was very easy to installed and the video from e-trailer really HELP.
Will buy from the vendor again.. Highly recommend!!


Jack seems solid, was a breeze to install, fit perfectly, seems to work fine. Installed on a large, enclosed Scout trailer that hauls a LOT of gear. We'll try it out next weekend. Only gave if 4 stars because we haven't really used it yet.


Purchased this along with the detachable foot plate to replace the existing jack on our trailer. Received items quickly and in excellent condition. Very easy to install and great quality products. Customer service was exceptional. Works great!


Everything works great. Bulldog jack is strong and easy to turn.
The videos are nicely done and helpful.
All excellent products


Works great, smooth action, you can weld or bolt this unit on. Using this on a car hauler. The original one failed after 12 years of use, so I found this one online. It looked just like the one I replaced....hopefully I will get the same years of use from my new one.


Everything worked perfectly like it was made to fit took me 5 min to install the shackles 3 min to install the bulldog foot this is where I will get all my parts from


Delivery was on time, exactly what I ordered, and fit perfectly. Works like a champ. Very good service and a very happy customer. Will order from etrailer again and will recommend this company to my friends!


This Jack has held up to everything I've thrown at it and still looks brand new. I'd recommend it to anyone.


Direct replacement for the one I broke 15.00 dollars cheaper than local store

Show More Reviews

See what our Experts say about this Bulldog Trailer Jack

  • Bulldog # BD1750290317 A-Frame Trailer Jack Bolt Pattern
    The Bulldog # BD1750290317 will work great for you. The front hole of the Bulldog # BD1750290317 is 3 inches away from the rears, measured center to center, the rear holes are 3-1/4 inches, also measured center to center.
    view full answer...
  • Mounting Plate Dimensions of the Bulldog Round, A-Frame Jack Part # BD1750290317
    I went out to our warehouse and measured the Bulldog Round, A-Frame Jack part # BD1750290317 for you. The two short sides measure to be 4-3/4" long and the long side measures to be 5" long. The dimensions have been included in a photo which I have attached for you as well. Please let me know if you have any other questions.
    view full answer...
    Image 1 for
  • Crank-to-Lift Ratio for Bulldog Round A-Frame Jack BD1750290317
    For the Bulldog Round A-Frame Jack # BD1750290317 the handle will need to make 8 full rotations for each inch of lift.
    view full answer...
  • Replacement Part for Trailer Jack
    We do offer a wide range of jack types as well as replacement parts that can be seen on the two linked pages. Most replacement parts are going to be brand- or item-specific so selecting an item will be easier if you can identify the maker of your jack and/or its part number. Most of our a-frame jacks use a 2- or 2-1/4-inch outer tube diameter, such as Bulldog # BD1750290317. Please feel free to submit a photo of your jack along with the brand and part number and we will be glad to assist...
    view full answer...
  • Compatibility of A-Frame Trailers and Bulldog A-Frame Jacks
    The good news is basically every A-frame jack and mount use the same 3 bolt pattern. We have yet to see an instance where someone tried to fit one of our jacks on an A-frame trailer and the bolt patterns didn't match up. What's also nice is that the mounting bracket of the jacks like the Bulldog part # BD1750290317 that you referenced are slotted to allow some variance in bolt pattern size. The pattern is 3 holes 3 inches apart.
    view full answer...
  • Lubricating Bulldog Topwind Trailer Jack BD1750290317
    According to the linked instructions, you can lubricate the Bulldog Round, A-Frame Jack - Topwind # BD1750290317. What you'll need to do is simply "apply a lightweight oil to the screw stem" which is shown in the bottom right photo of the cutout I made of the instructions.
    view full answer...
    Image 1 for
  • Replacement Bearing for Bulldog Round, A-Frame Jack
    The correct replacement thrust bearing for the Bulldog Round, A-Frame Jack # BD1750290317 is the # BD500223. This includes the bearing as well as the washer.
    view full answer...
  • A-Frame Trailer Jack that Can Have Wheel Caster Installed
    Hey Brian, so a-frame jacks aren't designed to have just the inner portion replaced like you asked about. You would need to replace the entire jack which would require cutting off the old jack and welding on a new one like the part # BD155028 that has a wheel caster with part # BD500245. Now if your jack has a removable foot plate and an outer diameter of 2 inch you could just use the wheel # BD500245.
    view full answer...
  • Comparing Differences for Bulldog A-Frame Trailer Jacks
    All three are very similar but there are differences between the three. Measure your stock trailer jack and buy the according jack that works for your application. Bulldog # BD1750290317 has clearance of 10-11/16 inches from mounting bracket to top of jack and is 10-13/16 inches retracted or 25-13/16 inches extended. Bulldog # BD155032 has clearance of 10-3/16 inches from mounting bracket to top of jack, excluding the handle and is 10-5/16 inches retracted or 25-5/16 inches extended. Bulldog...
    view full answer...
  • A-Frame Trailer Jack for 6 by 8 Trailer
    We don't offer any 6 by 8 trailers at this time and I checked your order notes and do not see any trailers that we may have offered back in the day so I don't know specifically what trailer you have but for a jack you could use with your trailer we have the Bulldog part # BD1750290317 for an a-frame style jack.
    view full answer...
  • Recommended Wheel for Bulldog Round, A-Frame Jack # BD155032
    The wheel that is designed to work with the Bulldog Round, A-Frame Jack # BD155032 that you referenced can be found on our site as part # BD500245. You will simply need to remove the pin, install the wheel, and then reinsert the pin to use the wheel. It does have a weight rating of 1,500 lbs so you will want to make sure that your Tongue Weight (TW) is compatible before using the wheel. If you would like to have the option of using a footplate for certain applications, you can use part...
    view full answer...
  • Options For Replacing Bulldog Square, A-Frame Jack # BD195318 With Heavier Capacity Jack
    The Bulldog Square, A-Frame Jack # BD195318 is a unique jack with its mounting pattern and we currently do not have any other a-frame jack with the same mounting pattern. To switch back to a jack like the Bulldog Round, A-Frame Jack # BD1750290317 you are going to want to replace your Coupler # CA5400 or weld in a new section to bolt the jack onto. The other option is installing a jack like the Fulton # HD50000101 which will mount to the frame tube.
    view full answer...
  • A-Frame Trailer Jack with 4 Inches Bracket to Bottom of Jack Clearance when Retracted
    The mounting bracket on etrailer jack # TJA-5000S-B is welded to the outer jack tube so it cannot be moved. It measures 8-3/8 inches when retracted. If 2,000 pounds capacity is enough, then Pro Series jack # PS1401000303 measures just 5-1/2 inches retracted.
    view full answer...

Do you have a question about this Trailer Jack?

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
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
Employee Hannah L
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Hannah L
Employee Mike S
Updated by:
Mike S
Employee Isabelle B
Updated by:
Isabelle B

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