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Bulldog Round, A-Frame Jack Drop Leg and Pull Pin Assembly

Bulldog Round, A-Frame Jack Drop Leg and Pull Pin Assembly

Item # BD500377
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Shipping Weight: 3 lbs
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Drop leg and pull pin fits most manual A-frame trailer jacks with round outer tubes. Zinc plating resists corrosion. Call 800-298-8924 to order Bulldog accessories and parts part number BD500377 or order online at etrailer.com. Free expert support on all Bulldog products. Guaranteed Lowest Price and Fastest Shipping for Bulldog Round, A-Frame Jack Drop Leg and Pull Pin Assembly. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (16)
  • Q & A (7)
  • Photos
  • Why etrailer?

Bulldog Accessories and Parts - BD500377

  • Trailer Jack
  • Camper Jacks
  • Legs
  • Bulldog
  • Drop Leg
  • 1-3/4 Inch Diameter Tubing

Drop leg and pull pin fits most manual A-frame trailer jacks with round outer tubes. Zinc plating resists corrosion.


  • Drop leg and pull pin fits most manual A-frame trailer jacks with round outer tubes
  • Clear zinc-plated finish resists corrosion


  • Overall height: 13-1/4"
  • Diameter of footplate: 5-1/4"
  • Distance between pin holes center to center: 2"
  • Distance between center of top pin hole and top of leg: 3-3/4"
  • Distance between footplate and center of top pin hole: 9-1/2"
  • Diameter of pin hole: 1/2"
  • Pin dimensions:
    • Overall length: 3"
    • Usable length: 2-3/4"
    • Diameter: 3/8"
  • Outer diameter of tube: 1-3/4"
  • Weight capacity: 2,000 lbs


500377 Bulldog Drop Leg Pull Pin Assembly for Round A-Frame Jacks

California residents: click here

Customer Reviews

Bulldog Round, A-Frame Jack Drop Leg and Pull Pin Assembly - BD500377

Average Customer Rating:  4.6 out of 5 stars   (16 Customer Reviews)

Drop leg and pull pin fits most manual A-frame trailer jacks with round outer tubes. Zinc plating resists corrosion.

- BD500377

Product seems like it's great build quality. Unfortunately, it does not fit my receiver. I took the time up front to measure my trailer tongue dimensions with calipers to verify the exact dimensions I needed. the reviews and description said this part might not be a match if you didn't have the same tongue and they were spot on. Wish it had fit but it's just a little too wide for the inside of the jack stand I have. 662661

- BD500377

I bought this product to go along with the Bulldog Round, A-Frame Jack - Topwind - 15" Lift - 5,000 lbs - BD155032 which I also purchased from etrailer at the same time. this was the third jack for an tandem enclosed cargo trailer that weighs about 7000 pounds loaded. The trailer belongs to a Non-profit living history group of which I am the "Seneschal" which essentially means the guy with the truck big enough to pull the trailer. My responsibilities also include repair and maintenance of all of the gear and the trailer. The original jack was damaged and I had purchased a "speed jack" from another company and installed it last October and did not use the trailer until April of this year. One use and that jack failed. Upon dissection I discovered that the Chinese manufacturer failed to lubricate it and the bearings were rusted and in various stages of disintegration. After a bit of cursing and a bit more internet research I found etrailer. Once I abandoned the idea of a "speed jack" and went with the drop jack, I found that etrailer had what I needed at a competitive price. Calling etrailer lead to a delightful experience rich with excellent customer service with likes of which I have never experienced in my 58 years. They were quick to confirm that this part was compatible with a Bulldog jack that etrailer also had in stock. I ordered it and was pleasantly surprised when etrailer upgraded my shipping for free. The parts even arrived a day earlier than the upgraded date. I have installed the jack and everything fit as promised. I have attached a picture. I must emphasize that this company has the best customer service that I have ever encountered. 375634

Very happy with the product and with your service. Thanks!
RenScots D - 05/07/2018


- BD500377

I assumed that since I bought the recommended part from Bulldog that matched my Bulldog jack the coupling would be smooth. Not the case, I was finally able to get the pin through and secure the drop hitch but only by using a hammer. It works but significant effort will be involved if I want to adjust the height to a different adjustment hole. 403670

- BD500377

Well built, solid jack and extension. Prompt shipping, good follow-up. Thanks for having the review page, the videos to explain everything! Mike 451466

A year later, still happy with the purchase! Might look to upgrade as I get older, but not too sure about the electric options. This jack has been bulletproof.
Mike H - 11/15/2018


- BD500377

I received my order in a timely manner. No problems what so ever . Like the product alot , definitely recommended . 745684

- BD500377

Perfect fit replacement for my Bulldog powered jack 500199 A few burrs on the landing pad, but nothing a file won't debur 729474

- BD500377

Really nice change to a broken jack. I would recomend this to everyone. 706091

- BD500377

Product does exactly what I wanted! 705460

- BD500377

Love this option to greatly increase lift while also maintaning low clearance. I combined this with a ProSeries A-frame 15" top-wind jack and they slide together effortlessly and provide a large range of lift. I tried the Bulldog version of the same jack and the parts did not slide together as good as the ProSeries version, although I only tried one Bulldog jack. I tested 3 different ProSeries jacks of the same model and all slid great. I choose this combination for our fleet of production trailers and I highly recommend it. 674341

- BD500377

Very happy with the items I purchased from etrailer. Shipped very fast and arrived in excellent condition. Will be buying from etrailer in the near future. 614569

- BD500377

Drop leg arrived a day earlier than expected---exactly as described and easily fit into Bulldog trailer jack. Glad I found this as now I don't need to carry blocks of wood to get the boat trailer high enough to hitch/unhitch off of a 3/4 ton truck. Great product!! 553840

- BD500377

I received my order quickly and installed the equipment today. Fit and finish seem to be perfect. And my order qualified for free shipping ! Bonus! Thanks etrailer! 426030

- BD500377

I purchased a trailer jack and dropleg from etrailer. The order was placed on a Monday, and I got the package on Wednesday. They upgraded my order for free. Now that is great service! 421772

- BD500377

The new jack works very well, the one that came with the trailer was very rusty and you had to work at it to get it to lift the front of my 8,000 lb trailer. I'm very happy with my purchase and etrailer shipped it within 24 hours of ordering on a weekend! 401132

- BD500377

I recommend these drop leg units to anyone who has a jack of this type. The ability to drop the leg to the appropriate height and then use the jack to finish lifting the trailer up off of the ball has saved untold cranking on 2 of my 7x18 enclosed trailers. 351416

- BD500377

Great item works perfect with bulldog ajack 293723


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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Written by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C

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