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Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 11" Travel - 1,200 lbs

Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 11" Travel - 1,200 lbs

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Corrosion-resistant, clear zinc swivel jack with 5-3/4" wheel is perfect for marine use as well as other recreational applications. Jack has an extended height of 23-1/2", a retracted height of 12-1/2", and a capacity of 1,200 lbs. Lowest Prices for the best trailer jack from etrailer. Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 11" Travel - 1,200 lbs part number MJ-1200B can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (447)
  • Q & A (28)
  • Photos
  • Why etrailer?

etrailer Trailer Jack

  • Boat Trailer Jack
  • Side Frame Mount Jack
  • 1001 - 2000 lbs
  • Sidewind Jack
  • No Drop Leg
  • Bolt-On
  • Swivel Jack - Pull Pin
  • 11 Inch Lift
  • With Wheel
  • etrailer

Corrosion-resistant, clear zinc swivel jack with 5-3/4" wheel is perfect for marine use as well as other recreational applications. Jack has an extended height of 23-1/2", a retracted height of 12-1/2", and a capacity of 1,200 lbs.


Features:

  • Marine jack lets you raise and lower your boat or recreational trailer
  • Swivel design lets you swing jack up for storage, down for use
    • 4-Bolt mounting plate provides extra side load support
    • Convenient 1/2", spring-loaded pull pin secures and releases jack
  • Plastic wheel lets you easily move your trailer
    • Inner tube rotates with wheel allowing you to move in any direction
  • Sidewind handle has comfortable, grooved grip
  • Corrosion-resistant clear zinc finish for durability
  • Bolt-on installation to the side of your trailer
    • Mounting bracket and hardware included


Specs:

  • Application: trailers with a frame height from 2" to 4"
  • Bracket height (from bottom of wheel to center of bracket):
    • 12-1/2" Retracted
    • 23-1/2" Extended
  • Travel: 11"
  • Outer tube diameter: 2"
  • Inner tube diameter: 1-3/4"
  • Wheel dimensions: 5-3/4" diameter x 2" wide
  • Mounting bracket dimensions: 6-7/8" long x 5-3/4" wide
  • Bolt dimensions: 3-15/16" long from bottom of the bolt head to the end of the threads
    • 2" From bottom of the bolt head to the first thread
  • Handle radius: 6-5/8"
  • Lift capacity: 1,200 lbs
  • 1-Year warranty


DimsBracket

MJ-1200B Ram Round Swivel Marine Jack - Bolt On - Zinc - Side Wind - 11" Travel - 1,200 lbs

Item # MJ-1200B






Customer Reviews

Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 11" Travel - 1,200 lbs - MJ-1200B

Average Customer Rating:  4.8 out of 5 stars   (446 Customer Reviews)

Corrosion-resistant, clear zinc swivel jack with 5-3/4" wheel is perfect for marine use as well as other recreational applications. Jack has an extended height of 23-1/2", a retracted height of 12-1/2", and a capacity of 1,200 lbs.

- MJ-1200B
by:

Very nice! Very easy to install. I never thought it would be so easy to reposition my boat in the garage. Moves so smoothly raising/lowering my trailer on/off my hitch. My only wish is that I would have replaced my old jack sooner! I highly recommend this wheel jack...



- MJ-1200B
by:

I purchased my Mj-1200B trailer jack last year for my DJ equipment trailer. The quality is great and more heavy duty than I probably need for a small 4x6' trailer but I couldn't be without it. No issues what so ever and so I'm very happy with the purchase!



- MJ-1200B
by:

Not the first swivel jack and wheel from eTrailer. Easy to install, high quality product for the money.



- MJ-1200B
by:

Got it installed. Could have used a 2nd pair of hands however it appears like it will solve the issue of having to lift the trailer up. Very happy with it



- MJ-1200B
by:

This Jack is the perfect fit for any trailer and makes it so much easier to move around on smooth surfaces.



- MJ-1200B
by:

This jack works great. It is so much easier to use than my old one. I can recommend it.



- MJ-1200B
by:

Works as expected, no issues


Comments
No problems with it. Works as expected.
Henry - 07/11/2021


- MJ-1200B
by:

Good value, simple design, works as it should and was easy to install.



- MJ-1200B
by:

Easy to install. Makes hitching up so much easier, especially on the back. Works great.



- MJ-1200B
by:

Very easy to install.



- MJ-1200B
by:

Had a hard time finding a trailer jack for my boat. It was unique and did not what to place jack in a different place on the trailer frame. I sent in photos of what I had. Within in a day I had a response with the correct jack and they shipped it that day. Got it 2 days later installed at the lake today, it works perfect. These guys and gals know there stuff. Excellent customer service!!!


Comments
Jack is working great. Make about 30 trips to the lake this year. Great product!!
Craig B - 10/11/2018



- MJ-1200B
by:

Very good construction. I bought the wrong size, but gerry rigged it with some wood blocks and bolted it on. This company was prompt and sent the right part. They were also courteous enough to ask me for a review a year later! The part does work. Its received a LOT of miles. I have put approx 1,000 miles on my trailer. Hauls Sea Doos all over the place for long river trips. Awesome!



- MJ-1200B
by:

I wanted the ability to detach from my utility trailer while it was loaded. My KIA Soul's receiver was close to the road so required a swivel jack with a very low retracted position. Was looking for something in the 10.5" range. This Jack had the lowest advertised height of 12.5" to the center line of the tounge tube. It occurred to me that the 12.5" was derived from the pivot point assuming a 4" tounge and mine was a 3". This gained me .5" towards my goal. I also discovered that if I mounted the bracket upside down from the instructions I would gain an inch more. This, combined with a higher rise ball mount worked out great. I'm very satisfied with this product.



- MJ-1200B
by:

I've ordered several items from etrailer. They were what I expected and were very quickly delivered.



- MJ-1200B
by:

The trailer seems perfect for my 12 foot Jackson Mayfly sit on top kayak. The trailer was shipped promptly in 5 boxes, all the parts were there. Instructions on how to assemble the trailer were excellent. Very happy with my purchase. I did add 2 wooden upright guides to keep the kayak centered on the trailer going down the road.



- MJ-1200B
by:

Just installed this trailer jack. Very simple installation, and the unit itself is very sturdy. I’m happy with this purchase.



- MJ-1200B
by:

I could not believe how fast your company dispatched my order. Thank you.



- MJ-1200B
by:

These are working so much better than the support legs that came with my pop-up. I mounted two on the back bumper and have one on the tongue, I can level my trailor upon set-up in minutes, or can jack the trailor and change a tire in minutes..... Great Product Wonderful Price....



- MJ-1200B
by:

Excellent product, works perfect



- MJ-1200B
by:

Got here when it should have, installed easily, and works extremely well. I recommend this to anyone who is tired of lifting the trailer (especially when loaded) in order to move it.



- MJ-1200B
by:

Bought and installed on my 4’x8’ trailer. Basically bought do I didn’t have to pick up my trailer and pull it around to move it because of my bad back. Trailer jack is larger than I thought it would be but it was ok, worked out great. I like the large wheel, now I can push it around and unhook if the trailer is still loaded. Great purchase. Recommended product



- MJ-1200B
by:

Took a bit of wrangling to get the jack on the trailer tongue, but only b/c I didn't have another set of hands to help. It took me ~20 min to put it on. I realize now that my trailer is back heavy, I need to attach a scissors jack to help it remain stable. Even so the wheel allows me to maneuver it around and already a great addition.



- MJ-1200B
by:

Several positive items come to mind. First, I was impressed with the extensive alternative items available - it almost made the choice difficult - too much variety in what was available. But a lot of information and reviews helped with selection. In the end price and ratings were most helpful.There was a wide range of prices and I choose the least expensive but it seems to be well constructed and plenty adequate for the job. Second, I wasn't expecting but enjoyed that after ordering my shipping was upgraded. I had ordered Sunday and the item was delivered Wednesday. And in a box that had handles so it was easy to move around. And packed in recyclable materials. Attaching the swivel trailer jack was simple and easy and required no instructions. Only took 15 minutes and most of that time was finding my tools. I haven't used it yet but it should work fine. And now I'll be able to move my trailer and kayaks much more easily.



- MJ-1200B
by:

I asked my wife to find a replacement jack for our enclosed trailer. I had bought one a few months ago from Walmart and honestly very disappointed in the product. When I unpacked this one from etrailer I was greatly surprised. This jack is of excellent quality and workmanship. I went to their website and was amazed at how many items they handle. I would recommend this company for any of your needs.



- MJ-1200B
by:

I bought this swivel jack for a utility trailer. It appears very well made and works well. Excellent value.


Comments
Have used it for a year. Still like new!
Dave L - 04/21/2018


25
459
Show More Reviews

Ask the Experts about this etrailer Trailer Jack

  • Replacement Jack Handle for Ram Jack with 1,200 lb Capacity
    Sounds like the jack that you have is the Round Swivel Marine Jack w/ Wheel # MJ-1200B which is a sidewind Ram Jack with a 1,200 lb capacity. So then the correct handle you'd need is the # MJ-1000B-HD.
    view full answer...
  • Replacement Parts for etrailer or RAM 1,200 lbs Round Swivel Marine Jack w/ Wheel
    For your RAM Jack # MJ-1200B, you can replace the crank handle with part # MJ-1000B-HD and the top cap with part # MJ-1000B-CP. The handle side bushing is not currently available as a replacement part.
    view full answer...
  • Overall Height of the Round Swivel Marine Jack w/ Wheel # MJ-1200B
    The overall height of the Round Swivel Marine Jack w/ Wheel # MJ-1200B is 22-3/8 inches when fully retracted. It can swivel forward or back too.
    view full answer...
    Image 1 for
  • Replacement for Shelby 5764A Trailer Jack on 2000 Four Winns Horizon 180
    Swapping the mounting hardware on a jack can be done, but it will depend on the specific mounting hardware of the jacks. Shelby jacks and parts are becoming more difficult to locate, so I would recommend replacing your Shelby hardware with something more easily replaceable in the future like the etrailer Marine Jack # MJ-1200B, which has a 1200 lb capacity and 11" lift. If you want to try to match the existing Shelby mounting plate, we do have one jack that may work. The Fulton Bolt-Thru...
    view full answer...
    Image 1 for
  • Grease Port Location For Ram Jack MJ-1200B
    Actually the hole that you see under the handle on the Ram Jack part # MJ-1200B is the port for lubricating the jack. Sometimes there is a zerk fitting there but for your jack it's just an opening. You would want to spray a lithium grease into that hole to keep the parts lubricated. Or you can remove the cap and spray down into the main tube of the jack that way as well.
    view full answer...
  • Trailer Jack to Replace 1200-lb-Rated Shelby 5791
    The linked page displays all of our 1200-lb-rated trailer jacks. All of these are side-wind types and they range in their amount of lift, most providing 10-inches of lift. We also have both weld-on and bolt-on types. You can click on the filters on the page to narrow the items shown to those with the characteristics you prefer. For instance, for a great-value zinc-plated jack with wheel that mounts to the side of the trailer frame the etrailer jack # MJ-1200B is a perfect option. This...
    view full answer...
  • 1,200 lb Swivel Jack Recommendation with Wheel Caster
    I believe the jack you are looking for a replacement for is a frame mounted, swivel jack, sidewind, that has a 1,200 lb capacity and a wheel caster. The part # MJ-1200B would be a great option that fits all of that criteria.
    view full answer...
  • Recommended Trailer Jack Compatible with Welding to Trailer Frame
    The Round Swivel Marine Jack w/ Wheel - Bolt On # MJ-1200B can be welded to your trailer if you so desire. You will compromise the corrosion resistant zinc finish by doing so instead of using the included mounting brackets and hardware. I recommend painting the weld to protect the metal if you choose to install in that manner. For a better alternative, I recommend the Fulton Round Snap-Ring Swivel Marine Jack - Weld On # FTJ120W0301. It will give you the mount intended for that weld-on...
    view full answer...
  • Replacement Side-Frame-Mount Swivel Jack for 1992 StarCraft A-Frame Pop-Up Camper Trailer
    We can help you with a new jack for your 1992 StarCraft pop-up camper. Usually an A-frame trailer like this will use a jack that mounts in the standard receptacle behind the coupler. Jacks for this kind of A-frame installation are linked for you. We have manual and electric types, top-wind and side-wind types, bolt-on and weld-on models and you can choose either a wheel or footplate. But sometimes a jack in this location can pose clearance issues with other trailer-mounted items or...
    view full answer...
  • Weight of etrailer.com Round Swivel Marine Jack # MJ-1200B
    The etrailer.com Round Swivel Marine Jack w/ Wheel # MJ-1200B referenced in your question weighs just around 15 pounds. This is a nice, corrosion-resistant swivel jack that features 11 inches of travel and a 1,200 pound lift capacity. The mounting bracket and hardware are included, along with the 5-3/4 inch wheel. I have attached a couple short video demonstrations on this swivel jack that you can also take a look at.
    view full answer...
  • Recommended Replacement for 1998 Coleman Fleetwood Westlake
    I am not aware of any such trailer jack that we offer which will reuse your existing mounting bracket as they are typically brand specific, not universal. Therefore, this bracket will need to be removed, usually by cutting, and then replaced with a bolt-on option such as the Round Swivel Marine Jack w/ Wheel part # MJ-1200B which is a great cost effective replacement option for this.
    view full answer...
  • Replacement Jack for Boat Trailer with Snap-Ring Mounting Bracket
    The best option to install a new trailer jack on a boat trailer with existing snap-ring mounting bracket would be to go with a bolt-on option, the Round Swivel Marine Jack part # MJ-1200B. I know you want to try and reuse the existing mounting bracket but the fact of the matter is that these snap-ring mounting brackets are not universal (different sizes) and most of the older options are not available anymore.
    view full answer...
  • Bolt-On Side Mount Caster Wheel Tongue Jack to Replace Fulton 1000-lb Jack
    We do sell replacement jack parts including the main screw like the one shown in your photo. Examples of these replacement jack screws are # TJD-12000-RODNUT, # BD500250 and # BD500217 which are shown on the linked page. Unless you can positively identify the model of Fulton jack you have I strongly recommend replacing the whole jack instead of trying to rebuild the old one. You may even save money by getting a new jack; you'll also get a new warranty and have the confidence of knowing...
    view full answer...
    Image 1 for
  • Is There a Replacement for a Shelby Jack 5856A That Uses Existing Bracket
    I do have an option for you but the Shelby trailer jack mounting bracket that you have welded to your frame won't be able to be reused with any newer jack. The Shelby trailer jacks did use similar designs in regards to mounting like the bolt-through and snap ring that some current jacks have but they are simply not cross-compatible. The bolt-through option for example from Shelby has a flat plate whereas the current models have a recessed portion. Therefore, the best option for you would...
    view full answer...
  • Are Replacement Parts Available for the Shelby 1200 lb Jack
    I have a solution but we do not have any replacement parts available for the Shelby jacks. Instead a replacement would be what I had to offer. If it is a bolt on jack use the Round Swivel Marine Jack w/ Wheel part # MJ-1200B. If it is held in place by a snap ring use the Fulton Round, Snap-Ring Swivel Marine Jack part # FTJ12000101 it will come with the bracket and a new snap ring but in most cases you will not use the bracket. These are both rated at the same capacity of your Shelby...
    view full answer...
  • How To Add Tongue Weight To a Small Motorcycle Trailer
    The issue you are having with excess sway is pretty common on light trailers. The sway issue might then be minimized when you have your motorcycle attached but odds are you are still going to have sway issues. The overall weight of the trailer is a concern but more importantly is the tongue weight. The best option you have to decrease trailer sway with your trailer would be to add as much weight as you can to the tongue. The best way to add the most amount of weight would be to make...
    view full answer...
    Image 1 for
  • Recommendation For a Weld-On Replacement Jack For Boat Trailer
    I did some research and it looks like your current Shelby jack had a 1,000-lbs to 1,500-lbs weight capacity with a 10 inch lift. For a similar jack that is weld-on, I recommend the Fulton XLT Bolt-Thru Swivel Trailer Jack, Item # F141132. This Fulton jack swivels and is great for marine use. It mounts to 3 inch x 3 inch, 3 inch x 4 inch, and 3 inch x 5 inch trailer frames. It has a 12 inch lift and a weight capacity of 1,500-lbs. If you need the weld-on mounting bracket and hardware...
    view full answer...
  • Is 1,500 lb Trailer Jack Enough for 21 ft Boat Trailer
    Trailer jacks are rated for the amount of tongue weight that the trailer has. Typically trailer tongue weight is around 10 percent of total trailer weight. So for a 1,500 lb jack to be at capacity the trailer would most likely weigh near 15,000 lbs. So a 21 ft boat trailer would have no problem with a 1,500 lb jack capacity. Our most popular swivel jack for a boat trailer is the part # MJ-1200B which has a 1,200 lb capacity and would work well.
    view full answer...
  • How To Replace Welded-On Trailer Tongue Jack for Boat Trailer
    In order to remove a welded-on trailer tongue jack you will need to cut off the old welds to release the mounting bracket. This can be done using an angle grinder. The jack can then be replaced with another welded-on option such as the Fulton Marine Jack part # FXP100W0301. If you don't have an angle grinder or the skills to use one you can always leave the mounting bracket attached and just install a bolt-on jack in front or behind it, I recommend the Round Swivel Marine Jack part #...
    view full answer...
  • Replacement Swivel Jack with Lowest Possible Retracted Height for Use on Small Utility Trailer
    I was able to find a swivel jack option for you that has a retracted height of 11 inches from the bottom of the wheel to the center of the mounting bracket, but none of the trailer jacks with a caster that we offer have a retracted height of 10 inches or less. The jack that may work best for you is the Fulton F2 Trailer Jack, like # F1413040134. This jack has an adjustable mounting bracket with the lowest retracted height being 11 inches. The lift height of the jack is 10 inches, and...
    view full answer...
  • Bolt Through Swing Away Trailer Jack For Limited Space Trailer Tongue
    The Fulton Bolt-Thru Swivel Marine Jack - Weld On - Sidewind - 10" Lift - 1,500 lbs # FXP15W. This jack is 12-3/4 inches retracted and has a clearance of 12-1/2 inches from mounting bracket to top of jack. This will be the closest jack to fitting your needs. If you don't need the bolt thru style, I recommend the Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 11" Travel - 1,200 lbs # MJ-1200B which is bolt on and has the 12-1/2 inch retracted length. Unfortunately...
    view full answer...
  • Recommended Trailer Jack with Lower Retracted Height for Landscaping Trailer
    I looked through our selection trying to find a similar jack to the MaxxTow, part # MT70149, with a retracted height less than 14-3/4 inches and found a couple of good options for you. You didn't say exactly what height you need, however part # MJ-1200B has a retracted height of 12-1/2 inches. The weight capacity is slightly less, at 1,200 pounds but that's probably still plenty for your trailer. It also offers 11 inches of travel which is a 1/2 inch less than the MaxxTow. A second...
    view full answer...
  • Replacement Jack for 2009 Ranger Boat Trailer
    Trailer makers don't maintain detailed specs on items like the jacks they supply on their new trailers but we do offer many types and capacities so we'll have one that will work for you. It is best to select a jack with more capacity than you actually need; the same is true for hitches and winches. Such items, when operated below their maximum capacity, typically last longer than ones used near their limits. I linked our main page for side-frame-mount jacks. You can click on your required...
    view full answer...
  • Recommended Light Duty Trailer Jack for 2-1/2 Inch Tongue
    For your light duty jack I recommend the Round Swivel Marine Jack w/ Wheel - Bolt On - Zinc - Sidewind - 11" Travel - 1,200 lbs # MJ-1200B. For your 2-1/2 inch tongue, you will need to drill additional holes in the mounting brackets to center the swivel portion of the jack, but it will work very well for your application and give you a precise fit.
    view full answer...
  • Similar Version of etrailer Side Mount Jack with at Swivel and Wheel Caster
    The etrailer.com jack part # MJSQ-2500B is made by RAM jacks like the jack you have now. The most similar swivel jack with a wheel caster would be the etrailer.com part # MJ-1200B which has a 1,200 lb capacity, a wheel like you want, and swivels like you want it to as well.
    view full answer...
  • Comparison of Two Round Swivel Marine Trailer Jacks
    The two swivel trailer jacks are very similar. The differences are the # MJ-1206B is rated for 1,000 pounds and has 10 inches of travel where the # MJ-1200B is a slight upgrade rated at 1,200 pounds and 11 inches of travel. I've linked videos to each of the jacks for you.
    view full answer...
  • Weight of Dexter Trailer Hub and Drum Assemblies and Other Trailer Accessories
    The Dexter Trailer Hub and Drum Assembly # 84557UC3-EZ weighs 24 pounds. The Dexter Nev-R-Adjust Electric Trailer Brake Kit # 23-468-469 has a total weight of around 20 pounds. The Timbren Axle-Less Trailer Suspension System # ASR2000S02 weighs around 72 pounds total. The TruRyde EZ Lube Spindle # TRU74FR weighs 6 pounds. The etrailer.com Round Swivel Marine Jack # MJ-1200B has a weight of 15 pounds. The Tekonsha Prodigy P3 Trailer Brake Controller # 90195 weighs in...
    view full answer...
  • What Replacement Parts Are Available for an etrailer MJ-1200B or Fulton Swivel Marine Jack
    You can replace the mounting bracket and hardware on an # FXP10W0301 or # MJ-1200B, but the tube and swivel bracket are not available as replacement parts for these jacks. You can use the Replacement Mounting Kit for etrailer and Ram Swivel Marine Jacks - 1,200 lbs and 1,500 lbs # MJ-1000B-MK for the mounting bracket and Replacement Mounting Hardware for etrailer and Ram Swivel Marine Jacks - 1,200 lbs and 1,500 lbs # MJ-1000B-MBB for the hardware. You can also replace the inner bearing...
    view full answer...

Do you have a question about this Trailer Jack?




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