Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Tighten up your connection. This hitch receiver immobilizer keeps your tow bar, drop receiver, bike rack and other hitch-mounted accessories from rattling and shifting while you're on the road.
Features:
Note: This will not work with BX88235 or BX88241 high-low adapters.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Randy: Hey guys, Randy here at etrailer.com. Today we're going to be taking a look at the Blue Ox line of hitch immobilizers. Now, these work out great in a lot of situations. Any time you're using an accessory in a receiver tube opening and it doesn't have an anti-rattle device on it, basically you get a lot of movement. Especially with cargo carriers, we get a lot of side to side movement, that weight transferring back and forth.Now before we get to the installation process, let's take a look at some of the test course footage before and after. Essentially, before we get this installed, you're going to see this cargo carrier move side to side quite a bit.
We've got it loaded down with about 120 pounds. That's when we're doing the slalom. As we go over the bumps, you'll see this back end tip up quite a bit. Now, the cargo carrier's going to have a little bit of that anyway, but we're eliminating all of that from the shank, so it keeps everything much more stable.Now you'll see in the after-footage, all that side to side movement is completely eliminated. Once we get into the bumps, you can see there's still a little bit there from the actual cargo carrier tolerance, but we've got nothing coming from the hitch.Now regardless of whether you're using a 2" hitch or 2-1/2" hitch, or what we've got installed here going from a 2-1/2" hitch with an adapter to a 2" accessory, they're all going to work the same way.
This part with the key stock comes in on the backside. Then this U-bolt you can see, as we tighten that down, it pulls down on the accessory. This U-bolt pulls over. That's going to lock it right into the side of our receiver tube opening. Especially when we're using adapters like this, there's so much slop in that system, everything moves side to side.
You can see it's nice, heavy duty steel construction with a black powder coat finish. Blue Ox always makes good products. Then we've got the zinc-coated U-bolts. They use locking Whiz nuts here. As we get everything tightened down, we really don't have to worry about it coming back apart.
Just does a great job in getting that set. The 2" by 2" version looks identical. This is the 2-1/2 by 2-1/2. Basically, it just takes all that discomfort and all that play and that movement out of the equation so you don't have to deal with it anymore.Now another option's the Roadmaster Quiet Hitch. This one, where the Blue Ox doesn't have an 1-1/4" fit, does have an 1-1/4" fit. Has a 2" and a 2-1/2" fit. Basically, this one, this loop goes down around the hitch. This bar is going to come down and press down on the item. Now I like this one quite a bit. On really heavy loads, on your really heavy trailers, or in really heavy flat tow setups, maybe you're hauling a 1500 4x4 Ram, it gets pretty heavy. This one only eliminates the up and down. It eliminates most of the side to side, but as items get really heavy, there is still a little bit of transfer or a little bit of motion side to side. I really like the Quiet Hitch. I think it does a great job. But for total containment, I think the Blue Ox is just a little bit better.Now for all of immobilizers, the installation process is going to be the same. This is the one that fits the 2-1/2" hitch down to a 2" product or 2" accessory. You've got the small lips here. It's going to sit in behind the lip of our hitch. We want to bring it right out to the edge of it. We've got a U-bolt that's going to go in this way. Place our nuts on there. Then we've got our U-bolt that's going to come in from the top. Same thing, throw our nuts on there. Now we want to grab a 9/16" socket and we're going to start tightening these down.It's going to help to pull over on the shank and also pull down on the shank just to help us ensure that we got a great hold on them. Now we're going to grab our torque wrench, want to get all four of those torqued down.As you guys can see, this takes care of a very common problem that we have. I really like this one. I like that it has the total containment on both sides. Really helps to eliminate that movement we experience. I think if you're having that issue or if you've got heavier items that you're loading up and you can feel that transfer, I think it's a great idea to pick one up.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Heather A.
6/3/2026
Thanks for sharing your experience. It sounds like the Immobilizer II did a good job reducing the movement between the receiver and carrier, but that you're still seeing some play from the folding portion of the carrier itself. Folding carriers can have a bit of inherent movement at the hinge that anti-rattle devices aren't always able to eliminate. The slight twist you're noticing may be the result of the immobilizer taking up the normal clearance between the hitch receiver and the carrier shank. While that's typically normal, we certainly understand wanting everything to sit perfectly straight. We appreciate you sharing your observations, as they'll be helpful for other customers considering this setup.
Anthony
10/12/2025
Haven’t used it in over a year. Purchased a bigger truck.
Forzadude
9/29/2020
A year later and these are still working great! They eliminate all of the chatter that comes from components of the hitch moving around. I just check the bolts for tightness every so often. I highly recommend this product if you are towing anything behind your motorhome.
Lou C.
2/9/2018
The Blue Ox Immobilizer is still on my pickup truck and working just as well as it did when it was first installed. This item is worth every penny! Highly recommended!
Bill A.
9/29/2018
Originally, it appeared to be a good product but after a year no so much. Currently, i’m unable to tighten the “U” bolts enough to restrict movement of the hitch. The “L” shaped bracket has bent to the point where it no longer works properly.
Rachael H.
10/2/2018
Ian V.
11/1/2017
Thanks for the very professional follow-up on the Blue Ox products I bought. In the end, I only used the set-up for about 3,000 miles before I changed my rig from a Class C towing a Jeep Wrangler using the Blue Ox parts to a Jeep Grand Cherokee towing an Airstream. Everything worked just fine for those 3,000 miles and all the parts have been sold on, practically as new, [on-line].
Paul
4/1/2020
Still great! Would definitely recommend it.
Clarence
8/2/2019
This product is still after a year of use every bit as effective as it was new. The nuts have worn sime grooves into the main body but this does not bother the products function. At first hands on of the product I was sure the nuts andor the threaded rods would wear out quickly. This will eventually happen as everything wears out with use, but again it has been a year and it appears it will be several more before replacing the nuts. Great ptoduct. I recommend this to anyone with a rattling hitch.
Do you have a question about this Hitch Anti-Rattle?
Condition: Installed
Notes: Item has been previoulsy test fitted and has cosmetic install marks.
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Steven
8/30/2026
Still works great!