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3-Ball Storage Case for Convert-A-Ball Interchangeable Hitch Balls

3-Ball Storage Case for Convert-A-Ball Interchangeable Hitch Balls

Part Number: 004B
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Convert-A-Ball Accessories and Parts - 004B
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Store and protect any size Convert-A-Ball hitch ball, when not in use, with this 3 ball case. 1-800-940-8924 to order Convert-A-Ball accessories and parts part number 004B or order online at Free expert support on all Convert-A-Ball products. Great prices and Fastest Shipping for 3-Ball Storage Case for Convert-A-Ball Interchangeable Hitch Balls. Accessories and Parts reviews from real customers.
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  • Reviews (92)
  • Q & A (0)
  • Videos (1)
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Convert-A-Ball Accessories and Parts - 004B

  • Trailer Hitch Ball
  • Ball Storage
  • Convert-A-Ball

Store and protect any size Convert-A-Ball hitch ball, when not in use, with this 3 ball case.


  • Holds 3 Convert-A-Ball hitch balls of any size
    • Hitch balls sold separately
  • Protects your hitch balls when not in use
    • Lid fits over storage compartment
  • Constructed of sturdy gray plastic
  • Case bottom can be mounted
  • Made in USA
  • 2-Year limited warranty

004B Convert-A-Ball 3 Position Ball Storage Case for Interchangeable Hitch Balls

Video of 3-Ball Storage Case for Convert-A-Ball Interchangeable Hitch Balls

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

Video Transcript for Convert-A-Ball Hitch Ball 004B Review

Today were going to review part number 004B. This is the Convert-A-Ball three ball storage case for storing the Convert-A-Ball interchangeable hitch balls. What this does is to store and protect any size Convert-A-Ball hitch ball when not in use; has a lid and a spot for the three Convert-A-Balls of any size. The hitch balls are sold separately or if youre happen to have the set which is the shank with the three hitch balls, this is a nice case to help you to be able to store them and keep them in good condition. This is constructed of a sturdy gray plastic, it is made in the USA it does come with a two year limited warranty. Basically what you would do is the balls youre not using, you just open them up put them in there and then if you push the pin in it locks it on to the storage case; same here with this one.

And then if you want to take the one off the shank and then right there you would have three balls actually held on because the pins are inserted through and this actually has two holes to screw it down to some surface if you want to attach to your vehicle of your trailer. Then once its installed just push the lid down over it and that will protect the balls from any type of damage. And then to get them with this attached on, you just lift up on this. There it is. That should do it for part number 004B.


Customer Reviews

3-Ball Storage Case for Convert-A-Ball Interchangeable Hitch Balls - 004B

Average Customer Rating:  4.7 out of 5 stars   (92 Customer Reviews)

Store and protect any size Convert-A-Ball hitch ball, when not in use, with this 3 ball case.


Simple solution works great. Will put in bag with the ball mount so all together. Light and heavy items all arrived unscathed.


This product stores my greasy trailer balls, keeps them from rolling around and grease off my carpeted storage compartment. All in a convenient small storage box. GREAT PRODUCT!


This is a very convienent way of carrying the extra sizes of the hitch balls.


Keeps it all together.



No problems. Good way to store different size hitch balls.


The #004B Box was purchased to house the 1 7/8", 2" & 2 5/16" interchangeable balls from my Reese 74309 Towpower Interchangeable Hitch Ball Kit. Although the box was designed for the Reese Convert-A-Ball system, it worked fine with my system which has a tapered shaft as opposed to the straight shaft on the Convert-A-Ball. Top half and base of the box snap together securely and with authority.


I am very happy with my purchase. I bought the 10K lb hitch, convert-a-ball set and cases for both. The ball mount with the "cushion" pulls nice and smooth, no harsh jerking. I really like the hitch/balls set. Stainless steel so no peeling of chrome or rusting. Case for balls and bag for hitch are also nice, keep everything organized and clean.


Really nice product works good with my Reese tow power balls.

Tim M.


Working great


Should you get it?... You should!The only reason I didn't give it the highest rating is I think the case should come with the kit. Especially if you buy the stainless balls. At first I thought why? I can put them under my seat or in the door, or in an extra bag I have... Then I envisioned seeing them falling out on the ground. Lost. Clanking around in transit. Somewhere I don't remember... The Where's my 2" ball honey? Questions and so I just bought the darn case and I'm happy I did. It's a quality case made for these balls. Don't go uncovered! And to convert-a-ball... Include the case with kit!!! Thank you etrailer! My experience was fantastic and I will be calling on you for my future trailering needs.


This case does exactly what it says - it stores the convert-a-ball balls very securely. However, the top of my case doesn't fit extremely well, so just about anything bumping in to it will knock it off.

Good though is that it's got mounting holes in the case so the bottom plate of the case can be screwed into a surface very easily. If you watch the informational video, you'll see them - I didn't notice them right off.

If I had the option, I'd probably make my own, smaller, case with dowel rods and a drill.


This product is ok to store your trailer balls in. However, the lid wont stay on. If the lid would have stayed shut I would have given it a lot better rating.


this product is decent, it works as designed for the most part. only complaint I have is that the balls can rattle slightly on their mounts inside the box, and the lid on the one I have tends to pop off on it's own when stored or even when you go to pick it up, so you have to be careful how you grab it, but a piece if tape around it would fix that. if the lid fit better, it would be 4/5 stars.


Keeps my convert-a-ball hitch balls in one place and also keeps the interior storage area of my truck clean, great idea.


Awesome carry one drop hitch just change ball very convenient


Its a great box to carry n store the convert a ball. The only thing that needs an upgrade is the lid. It always comes off, does not lock in place.


The convert-a-balls fit tight on pins in the plastic box. It keeps them from rolling around , losing or damage them. Great Item. Ordering and delivery was quick and easy and was on time. I would shop at e-trailers again .


Nice case for the cargo portion of my truck. Keeps all of the hitch balls in one place and clean.


Strong, well made case provides protection for all 3 tow balls in one neat place & ready to use at anytime. Can also be mounted vertically or horizontally. A must have!


I ask him how he liked his convert a ball and he said “ I love it!”.
Take THAT to the bank. I rarely hear anything near that response.


This case looks good, and does what it's supposed to do. Keeps the balls stowed and locked in place. Only time will tell on quality of the material, since it's made of plastic. Needless to say I'm very pleased with this purchase.


Very nice product. Takes up little space and protect your interior from grease and all the hitch balls are in one place.


Great case, locks extra trailer balls in container that can be permanantly mounted to your service body with a couple of sheet metal screws (not included).


I think the items look fine exactly what i was looking for However I ordered
and paid for 2 storage cases and only received 1 When should i expect the
second storage case ?

Etrailer Expert

Jenny N.


I checked and I show that second case was shipped separately. Please visit the order tracking page to see the exact delivery date.


Heavier built than expected. Looks to be made to screw to truck which I won't do so wish had a place to grab bottom better to open but screwed to a piece of plastic I had for a handle so works great.


Convert a ball storage boxVery good product to neatly organize your many size options of towing balls. It is a little tricky getting the case open especially with cold hands.


Ordered 3 Convert-A Ball items late on Fridayafternoon and they arrived the next Tuesday!!! This is great service!! "" has become my goto site for my towing gear.

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See what our Experts say about this Convert-A-Ball Accessories and Parts

  • Stainless Steal Standard Convert-A-Ball 3 Hitch Ball Kit, Storage Case, and Cover Part Numbers
    Thanks for reaching out, Bruce! The Convert-A-Ball Interchangeable Ball Set # 902B comes with the 2-1/4" standard shank length so it's the kit you're looking for. The XL kit, part # 105TB, comes with a 3" shank length just or reference. Then to wrap up the rest of the parts you asked about you'll need the Storage Case # 004B and the Cover # 005B.
    view full answer...
  • Can the Convert-a-Ball System be Left on the Draw Bar when not Towing
    The ball pin uses rubber o-rings to hold it in place, the friction holds the pin from moving. I would suggest using a ball cover for a couple reasons. First since it wraps around the ball, the pin would not be able to come out so the ball will stay on. Second, I have ruined a couple pairs of pants by brushing up against greasy hitch balls. And third, a hitch cover will keep water off the ball, which is not as big of deal with stainless, but it is a good practice. I have added a link to...
    view full answer...
  • Will Convert-A-Ball Storage Case # 004B Store Pintle Sleeve As Well
    The 3-Ball Storage Case # 004B that you referenced is a great way to store the hitch balls from your Convert-A-Ball Pintle Hook Combo like part # PH4 but there is not enough room in the box for the pintle sleeve as well. For something that will protect the entire assembly I recommend taking a look at a small storage bag like the # ETBMB. This is a really nice, durable bag with a nylon construction and easy to use zipper closure. I have attached a short video review that you...
    view full answer...
  • Thread Pitch For Convert-A-Ball 1" Shank For Interchangeable Ball Set
    The Convert-A-Ball Shank # 106B used in the Convert-A-Ball Interchangeable Ball Set # 906b uses a 1"-14 thread pitch. Be sure to get the Convert-a-Ball Cover # 005B and Storage Case # 004B to protect your parts.
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Leah B
Edited By:
Leah B

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