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Replacement Sidewind Handle Knob for etrailer and Ram Swivel Marine Jacks

Replacement Sidewind Handle Knob for etrailer and Ram Swivel Marine Jacks

Item # MJ-1000B-KB
Our Price: $12.26
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Shipping Weight: 0.35 lbs
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Replaces the sidewind handle from your etrailer or Ram swivel marine jack. Grooved handle grip allows for comfortable, easy cranking. Designed for MJ-1000BBX Series jacks. 1-800-940-8924 to order etrailer accessories and parts part number MJ-1000B-KB or order online at Free expert support on all etrailer products. Great prices and Fastest Shipping for Replacement Sidewind Handle Knob for etrailer and Ram Swivel Marine Jacks. Accessories and Parts reviews from real customers.
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  • Reviews (115)
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  • Videos (1)
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etrailer Accessories and Parts - MJ-1000B-KB

  • Camper Jacks
  • Trailer Jack
  • Handles and Cranks
  • Sidewind
  • etrailer

Replaces the sidewind handle from your etrailer or Ram swivel marine jack. Grooved handle grip allows for comfortable, easy cranking. Designed for MJ-1000BBX Series jacks.


  • Replaces the sidewind handle from your etrailer or Ram swivel marine jack
    • Designed for use with MJ-1000BBX Series jacks
  • Grooved, black handle grip allows for comfortable, easy cranking
  • Includes bolt and nut for installation

MJ-1000B-KB Replacement Black Handle for Ram Retail Boxed Marine Swivel Jacks

Video of Replacement Sidewind Handle Knob for etrailer and Ram Swivel Marine Jacks

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

Video Transcript for etrailer Swivel Marine Jacks Replacement Sidewind Handle Knob Review

Hey everybody, Ryan here at etrailer. Today we're gonna be checking out and showing you how to install the replacement handle knob for trailer jacks. When it comes to trailer jacks, you know, a lot of times they take a beating, they sit outside, we're all hard on 'em, and everything else. And so what I've seen in the past, a lot of times these handles, you know, they'll actually spin making it easier to crank the jack. A lot of times they also get froze up and make it a little more difficult to turn, kind of chews your hand up when you're doing that. Or in our case today, I'm assuming the plastic on this original one broke, they probably busted the rest of it off just so they don't cut their hands on the plastic.

But kind of a pain, you know, just turning this with bare metal here. If your jack is still functioning, make more sense just to put a new handle on it as opposed to having to buy and replace a whole new jack. In terms of what this is gonna work with, what type of jacks, you know, I feel like it's gonna fit a ton of 'em. So this one's designed for etrailer jacks and Ram-brand jacks as long as the handle's removable. This is a good example today, this looks like it's a SeaSense Jack, and I'm sure this will fit a lot of other brands as long as that handle is removable, and this piece will fit inside there.

So on two of the sides it's flat, and the flat part what that's gonna do is get in there and prevent this from spinning when you tighten the bolt down. And so as long as it'll fit in there, I feel like you should be in pretty good shape. Just out of curiosity, I took a crescent wrench here and put it on those flat spots and cranked it down. And what I have on my wrench is 3/8 of an inch. So that's something you can do at home to make sure that this is gonna work.

And if that pans out to be the same size, chances are really good you'll be able to replace your existing one. Other than that, though, at the end of the day, this is a really convenient part. It seems like a lot of people have a hard time finding something like this and end up having to just buy a whole new jack. But like we talked about, if this is in good shape and you're able to just replace a handle, kind of a no-brainer, right In terms of getting this installed. Super easy.

Shouldn't take you hardly anytime at all. And speaking of that, why don't go ahead and just change this one out now We'll remove our existing one, so just get this nut removed, get that out of the way. And essentially just a direct replacement here. So we wanna make sure when we put this in that those flat spots are gonna, you know, go inside of the other portion of our handle here. You got the washer that comes with it and the new nut. Tighten that down. And now we are back in action. We'll go ahead give it a test here. So, feels solid, you know, not a lot of slop or play in it or anything. The handle spins freely, and everything's working like it should. And that'll finish up our look at and our installation of the replacement handle knob for trailer jacks.

Customer Reviews

Replacement Sidewind Handle Knob for etrailer and Ram Swivel Marine Jacks - MJ-1000B-KB

Average Customer Rating:  4.8 out of 5 stars   (115 Customer Reviews)

Replaces the sidewind handle from your etrailer or Ram swivel marine jack. Grooved handle grip allows for comfortable, easy cranking. Designed for MJ-1000BBX Series jacks.


I looked everywhere and finally found the exact model of handle I needed and this one is actually much better quality than the original.



It has been a year and the handle works great. The grip is a lot better than the old handle that was lost. I would definitely recommend etrailer to keep your equipment running better than new.


It took over a month for me to receive this shipment . At least erailer kept in touch with me and let me know why . The handle fits great on my Jack which is a 1000 lb . Jack with a red b on it . I think that I bought it at Lowe’s .


This particular handle was exactly what I was looking for, and I had unsuccessfully checked many other places for them. This style of bolt-on handle is evidently not used much anymore, so I was very happy to find it here. It is of very good quality and comes with the handle, bolt, locking nut, and flat washer. I am using it on a boat trailer jack. I thought the price was excellent.

Let me add that I was very impressed with the communications I received from Erika W. at etrailer. She emailed me right away with the apology that the handle was on backorder, and kept me up to date along the way. These communications were not the result of my inquiring about the handle - they were proactive updates from her about the delay and the progress they were making.

I have purchased from etrailer before and I certainly will again!

Tom J.


After a year the handle is still working great!


Replaced the froze up handle on my cargopro atv trailer,works great.
I just had to use a different lock nut for proper thread engagement for my application.


This handle replacement is not easy to find. I ordered it thinking it will be a direct replacement for my jack but im 95% sure this is designed for a larger hole than the bolt itself. It has two nibs that look like they are supposed to bind when tightening the nut which didn't work on mine so i ended up using an impact to snug it up. I also had to add two large washers as spacers because the plastic had way too much play side to side. Overall it is working just fine.


This handle was just what I needed to replace the rubber-grip rotating handle that went missing off the SeaSense jack on my boat trailer. It has a lock nut so maybe it won't fall off on the highway like the last one did! These don't seem easy to find, maybe it's an old style of jack, so I was grateful eTrailer had one to sell. I down-rated one star only because it seemed overpriced, but because I couldn't find it anywhere else, that's ok too.


I needed a new handle for my tongue jack. the jack was under warranty, but when I called for a replacement they said it was backordered until the end of october, and I should call back then just to see if is available yet. what kind of customer service is that?? I'm glad e-trailer had this handle available. It was worth the few dollars I paid for it to not have to deal with the poor service from the manufacturer!! fast shipping, and good quality part!!


Great quality! Arrived quickly


What i needed. Thanks


Bolt inside the handle knob doesn't quite fit my trailer.. the round part goes through the hole, but the hole has a rectangular shape (as does the bolt), like a carriage bolt, and that part of the bolt is too large to fit through the hole. I am using it temporarily until I find something that fits.

Etrailer Expert

Brooke M.


I am sorry to hear that these arent working well for you. What type of jack are you hoping to use this with? It looks like this handle is made specifically for MJ-1000BBX Series jacks.


The order is incomplete the picture clearly shows end cap nut and bolt.I received two end caps with the knob.Otherwise the service was excellent .

Etrailer Expert

Jenny N.


I will have our customer service team reach out to you.


It took over a month to get, with no communication from e-trailer, very odd


Fit fine and should stay put with the locking nut. Seems to be a quality handle.



So far so good!


My old handle crumbled from rust build up. This new handle arrived on time and with a simple placement of a nut my trailer jack is once again functioning. Thx etrailer.


Perfect fit and easy to install. Will buy from trailer again.


Simple to install and very good quality. Replaced both the winch and jack handles. Very happy with the purchased.


Been looking everywhere for this type of jack handle. This is exactly what I needed and works great!


Replacement handle fit perfectly on my Fulton trailer jack.


Direct replacement works so smooth and easy. Easy inexpensive way to fix jack so I didn't have to buy a new one.


Perfect replacement at a great price.


Great quality. My trailer crank needed minor modification for this handle kit to fit BUT this replacement handle is far superior in quality than the handle it is replacing. Shipping fast and intact. will be my "go to" for trailer repair in the future.

Jay T.


Grrrreat! Very stalwart part and has been worked hard and put away wet a lot lately. No signs of wear. I am very pleased with this part. Thanks for checking with me.


I had broken off the handle on my boat trailer jack and this replacement worked great. The bolt was a little big for the crank and I had to drill the hole out a bit but it tightened down firmly and works great!

Mike L.


Still working wonderfully!


Worked perfectly, easy to order. Easy on even if I had to cut off the other one


Hopefully this will work for what I need? I think it will! Very fast shipping! Thank you !


This was a perfect handle replacement for my Fullton sidewind trailer tongue jack. I went online to find a Fullton brand replacement handle but was unable to find one. Nice chunky ribbed black handle with a 3/8" dia thread and nylock nut. Shipping was fast.
Very happy!

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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video by:
Joshua S
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Updated by:
Mike S
Employee Amanda M
Written by:
Amanda M
Employee Ryan G
Installed by:
Ryan G

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