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  1. Trailer Jack
  2. Bulldog
  3. A-Frame Jack
  4. 4001 - 5000 lbs
  5. Topwind Jack
  6. No Drop Leg
Bulldog Zinc Top Wind A-Frame Jack - 5,000 lbs

Bulldog Zinc Top Wind A-Frame Jack - 5,000 lbs

Item # BD1750290301
Our Price: $87.53
You Save: 27%
Trailer Jack
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Shipping Weight: 12 lbs
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Bulldog A-Frame Jack - BD1750290301
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Ideal for marine as well as agricultural and commercial applications, this corrosion-resistant A-frame jack features an 10-13/16" retracted height and measures 10-11/16" from the mounting bracket to the top, excluding the handle. Great Prices for the best trailer jack from Bulldog. Bulldog Zinc Top Wind A-Frame Jack - 5,000 lbs part number BD1750290301 can be ordered online at or call 1-833-496-1390 for expert service.
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  • Reviews (442)
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  • Why etrailer?

Bulldog Trailer Jack - BD1750290301

  • A-Frame Jack
  • 4001 - 5000 lbs
  • Topwind Jack
  • No Drop Leg
  • Bolt-On
  • Weld-On
  • Standard A-Frame Jack
  • 15 Inch Lift
  • No Wheel or Foot
  • Bulldog

Ideal for marine as well as agricultural and commercial applications, this corrosion-resistant A-frame jack features an 10-13/16" retracted height and measures 10-11/16" from the mounting bracket to the top, excluding the handle.


  • Utility jack is perfect for agricultural and commercial applications
  • Precision-fit parts provide exceptional stability and reliability
  • Weld-on/bolt-on bracket mounts to any standard A-frame coupler
  • Outer and inner tubes are zinc plated for corrosion resistance
  • Topwind handle has smooth, ergonomic design for easy cranking
  • Jack foot or caster sold separately


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

Easy-grip handle, precision fit parts for stability, weld or bolt-on mounting, caster wheel assembly - BDCP555 (sold separately) is ideal for marine applications.

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.

1750290301 Bulldog Galvanized Zinc Top Wind A-Frame Jack - 15" Travel - 5,000 lbs

Installation Details BD1750290301 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Bulldog Zinc Top Wind A-Frame Jack - 5,000 lbs - BD1750290301

Average Customer Rating:  4.8 out of 5 stars   (442 Customer Reviews)

Ideal for marine as well as agricultural and commercial applications, this corrosion-resistant A-frame jack features an 10-13/16" retracted height and measures 10-11/16" from the mounting bracket to the top, excluding the handle.


just what i needed for my deckover trailer. now i have enough height to crank trailer off the ball without using blocks under the wheel. fit great and works well


Amazing I received the jack 2 days after I ordered it ! That is unheard of in the aftermath of COVID ! The part was exactly what I wanted and the trailer will be good for another 20 years


The trailer jack on my big tex trailer was good until I caught it on an oak tree root. Hummmm, my fault. After looking at many replacements I found the etrailer web site. I took a chance and ordered the bulldog zinc 5000lbs jack. The shipping was on time, the product was exactly what was shown, the quality was excellent. It took me longer to drink my cup of coffee than it did to install my new jack. Would I recommend doing business with YEA!!!


I have a 16 foot galvanized car hauler trailer with the A frame type mounts at the rear on each side for stabilizing jacks. These fit the bill perfectly and at 5k each will handle anything I tow. I could have gone with a couple 2k jacks at half the cost but I tend to over-engineer things to handle worse case scenarios. I don’t haul more than 5k pounds so if one failed the other could handle the load. I wanted zinc for corrosion resistance. I added the square bulldog footplate to each one. The top wind has always been much easier and more durable for me so I favor that over sidewinder types.

Still work great, even after the trailer was stolen and one foot plate retaining pin was ripped off when I recovered it. A couple bucks at tractor supply for a new pin and it still works like new. One tough jack!
Vince - 07/13/2020


Top Wind A- Frame Jack fit perfectly for the replacement. Line up matched without a problem. Right and Left Clearance lights worked great, E-Trailers only place I could find these types of replacements. I am very happy with the Trailer Lock, fits securely and visible.
Excellent turn around time for delivery. I will be using E-Trailers products again and referring to anyone who asks where to find trailer replacement parts.



The Bulldog tongue jack I received was smoother than the OEM jack it replaced and the price was unbeatable. was helpful in selecting the right jack for my application. I’m giving them my highest rating.


This jack was purchased to replace a very old, worn out jack on a horse trailer. Have not installed yet, hence only 4 stars, however it appears to be extremely heavy duty, and Bulldog is a reliable brand name. etrailer is a very nice company to do business with. This is our second order, all products have been very good.


Have had the jack for a year now on the front of a 10,000lbs trailer. Works great, cranks nice and easy. Only thing that could be better is to have a nicer handle. The knob style isn't the greatest on your hand


Very solid feeling jack, seems well made. Easy install (three bolts), although it's worth noting that on a Bigfoot 25b25rq trailer I had to widen the jack sleeve about 1/32" (minor amount of grinding).


All expected..Thanks


Easy to install. Easy on an old man’s shoulder jacking up an 8000 lb boat.


last one lasted 12 years on my ''used a lot"' charter boat trailer tongue. with proper maintenance. I'm sure that calls for 5 stars!!!


Best tongue jack for the money. Bolted right up, much smoother and easier to crank than the Fulton and Pro Series that previously were on trailer.


Prompt delivery and everything worked right out of the box. A-frame trailer jack is super.


This jack worked just as I expected. No issues bolting it to my camper trailer!


Awesome service, Great price and a terrific product. Direct replacement for my bent trailer jack.


The handle on the crank makes it much easier to crank than the stock jack. Service and shipping was extremely fast.


Super easy to order, showed up before promised and a great product.


The trailer jack performed as described


Quality part at a fair price, and really appreciate the prompt shipping.


Product arrived timely and was easy to install.


Works great. Easy to lift trailer now.


This jack is nice and heavy duty. Does a great job.


Excellent service great products


The product fit perfect and did the job as expected. I do think it could be built a little heavier duty but no issues after a year of use.

Show More Reviews

See what our Experts say about this Bulldog Trailer Jack

  • Availability of 5,000 lb Bulldog Jack for A-Frame Trailer
    We have several 5,000 lb Bulldog trailer jacks but I was not able to find your exact part number. If you check out the link I attached you can see all of the 5k Bulldog jacks we carry. The closest matching part number we have is the part # BD1750290301 which is an A-frame jack with a top wind.
    view full answer...
  • Recommended A-Frame Jack
    I do not recommend installing an a-frame jack in a manner that requires you to disassemble it. What I do suggest, since you have fabrication capabilities, is that you make a new a-frame jack mounting point on the trailer at the height you want it and then simply install a jack like the Bulldiog # BD1700100317 from above as usual. Or you may simply want a jack like the Bulldog # BD1750290301 which measures only 10-13/16-inches from the mounting bracket to the top, excluding the handle. All...
    view full answer...
  • Replacement for a Fulton Marine Trailer Jack Model 0926012
    The most comparable replacement for your Fulton model 0926012 3K capacity A-frame trailer jack would be the Bulldog # BD1550101344 which offers the same capacity and amount of lift as your current jack. The jack features a zinc finish that offers good corrosion resistance. You could certainly go with a higher 5000 lb capacity jack like the Bulldog 1700100117, but we don't offer that jack. If you're wanting something with a bit of a higher capacity, I'd recommend something with a tough...
    view full answer...
  • Troubleshooting Bulldog A-Frame Jack Being Difficult to Use
    It looks like you have the Bulldog Zinc Top Wind A-Frame Jack - 5,000 lbs # BD1750290301. If your old jack had a higher capacity and you are exceeding the capacity of 5,000 lbs it could be more difficult to use/should not be used since it is not designed for more weight. Outside of that, the only good explanation is that this is a different design/different jack than your old one so it is more difficult to use by comparison.
    view full answer...
  • Recommended Replacement Bulldog A-Frame Trailer Jack for 1979 Trail-Rite Boat Trailer
    The Bulldog Zinc Top Wind A-Frame Jack # BD1750290301 referenced in your question is a great option for replacing the original jack on your 1979 Trail-Rite tandem boat trailer. This jack's 5,000 pound weight capacity is more than enough to handle the tongue weight of your 3,500 pound trailer and will provide a total lift of 15 inches, up to an extended height of 25-13/16 inches. This jack can be either welded or bolted onto any standard A-Frame trailer. If you need a new caster wheel, the...
    view full answer...
  • A-Frame Trailer Jack Recommendation for a 10,000 lb Trailer
    A trailer that weighs 10,000 lbs would have a tongue weight of anywhere from 1,000 lbs to 1,500 lbs. The Bulldog Jack part # BD1750290301 that you referenced has a 5k capacity and would be more than enough. For a footplate to go with this jack you would want part # BD018564 or for a wheel caster part # BDCP555.
    view full answer...
  • Bulldog Collar Lock Coupler and Tongue Jack for Scamp 13FT Travel Trailer
    I went out to our warehouse and pulled the Bulldog Collar-Lok Coupler w/ High-Profile Latch, # BD028384 to get a measurement for you. The neck of the Bulldog coupler measures 8". I have included pictures which illustrate these measurements. The Bulldog Collar-Lok Coupler, # BD028384, is a heavy-duty coupler that offers a tight fit with visual indication of proper closure around the ball to ensure quick, easy and secure hookup which will hopefully keep you mishap-free. This weld-on, A-frame...
    view full answer...
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  • A-Frame Trailer Jack Options with a Lift Capacity of 5,000 lbs
    The Bulldog Square A-Frame Trailer Jack, # BD195318, has a lift capacity of 3,000 lbs and a static weight capacity of 5,000 lbs. If you want a jack with a 5,000 lb lift capacity, I recommend looking at the Bulldog Round A-Frame Trailer Jack, # BD1750290301. This jack has a lift capacity of 5,000 lbs, a top wind crank and a 15 inch lift like the square jack you referenced. At this time we do not have any square tube or drop leg jacks with a 5,000 lb lift capacity. This jack can be used...
    view full answer...

Do you have a question about this Trailer Jack?

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