1. Hitch Anti-Rattle
  2. Blue Ox
  3. Fits 2 Inch Hitch
  4. Fits 2-1/2 Inch Hitch
  5. Standard Anti-Rattle
  6. Accessory Anti-Rattle
  7. Towing Anti-Rattle
Blue Ox Hitch Receiver Immobilizer III for 2-1/2" Hitch with 2" Adapter

Blue Ox Hitch Receiver Immobilizer III for 2-1/2" Hitch with 2" Adapter

Item # BX88312
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Hitch Anti-Rattle BX88312 - Sleeve Style - Blue Ox
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Tighten up your connection. This hitch receiver immobilizer keeps your 2" hitch adapter or reducer from rattling and shifting while you're on the road. Call 800-298-8924 to order Blue Ox hitch anti-rattle part number BX88312 or order online at etrailer.com. Free expert support on all Blue Ox products. Guaranteed Lowest Price and Fastest Shipping for Blue Ox Hitch Receiver Immobilizer III for 2-1/2" Hitch with 2" Adapter. Hitch Anti-Rattle reviews from real customers.
  • All Info
  • Reviews (18)
  • Q & A (18)
  • Videos (2)
  • Photos
  • Why etrailer?

Blue Ox Hitch Anti-Rattle - BX88312

  • Fits 2 Inch Hitch
  • Fits 2-1/2 Inch Hitch
  • Standard Anti-Rattle
  • Accessory Anti-Rattle
  • Towing Anti-Rattle
  • Blue Ox
  • Sleeve Style
  • Universal

Tighten up your connection. This hitch receiver immobilizer keeps your 2" hitch adapter or reducer from rattling and shifting while you're on the road.


  • Keeps your 2" hitch adapter stable and secure inside your 2-1/2" hitch receiver
    • Helps to eliminate rattle and sway within the receiver
    • Stiffens and reinforces receiver
  • Mounts quickly and easily
  • Installs around collar of 2-1/2" hitch and shank of 2" hitch adapter
  • Includes bracket, U-bolts, and nuts
  • Made in the USA


  • Inner dimensions: 2" long x 2" wide
  • Overall inside bracket dimensions: 4" tall x 4" wide
  • 1-Year warranty

Dimension of Anti-Rattle

BX88312 Blue Ox Hitch Receiver Immobilizer for 2-1/2" Hitch with 2" Adapter Shank

Installation Details BX88312 Installation instructions

Video of Blue Ox Hitch Receiver Immobilizer III for 2-1/2" Hitch with 2" Adapter

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

Video Transcript for Blue Ox Hitch Anti-Rattle - Standard Anti-Rattle - BX88312 Review

Speaker 1: So today we're taking a look at the Blue Ox Hitch Receiver Immobilizer III for 2-1/2 inch hitches, with a 2 inch adapter. Now, this unit's designed to keep your hitch adapters stable and secure inside of your 2-1/2 inch trailer hitch. With this installed, it helps eliminate rattle and sway within the receiver. It stiffens and reinforces the receiver. Now, it's a really simple set up, it's easy to use, it comes with detailed installation instructions. Basically, what you would do is place this up against your hitch, and what you what to do is make sure that the collar that goes around the exterior of your hitch sits on this side of the bracket.So, you place that on there, and then you can actually go ahead and place in your extender and your 2-1/2 inch by 2-1/2 hitch.

And then it comes with these U-bolts. One of the U-bolts goes down, the other one goes to the side, and it comes with the appropriate nuts. It just requires a 9/16 inch socket wrench to get it installed, and because these U-bolts cross, it helps eliminate up and down movement and side to side movement from within the hitch.It mounts quickly and easily, it installs around the collar of the 2-1/2 inch hitch, and then around the shank of the 2 inch hitch adapter. It comes with the bracket, U-bolts, and nuts. The unit is made from a very durable steel construction, features nice powder coated finishing on it to resist rust and corrosion, and the product's made in the U.S.A.That's gonna do it for a look at the Blue Ox Hitch Receiver Immobilizer III..

Customer Reviews

Blue Ox Hitch Receiver Immobilizer III for 2-1/2" Hitch with 2" Adapter - BX88312

Average Customer Rating:  4.7 out of 5 stars   (18 Customer Reviews)

Tighten up your connection. This hitch receiver immobilizer keeps your 2" hitch adapter or reducer from rattling and shifting while you're on the road.

- BX88312

I have always had nothing but the best service with e-trailer. They bar far have always exceeded many other retailers hands down. 641087

- BX88312

Great product, keeps my bike rack from jumping around on my truck and on the back of my travel trailer and also keeps my travel trailer hitch from moving too much due to the 2" hitch in a 2 1/2" receiver with reducer. 646941

- BX88312

Great product. Keeps my hitch from rattling. Love it 467888

Use it often & works as well now as new
Doyle - 01/17/2019


- BX88312

It stabilized the hitch. Wish it was made out of a little stronger materials, not sure how it will handle a heavy load. Haven't use it yet in towing. 334593

- BX88312

Great product! If I would have known earlier about this item I would have purchased it earlier. Stiffens my tow bar. I have two of these on my Blue Ox Aventia tow bar, one at the received on the hitch and one on the tow bar itself where it attaches to the riser. Highly recommend this item 480132

Well on one of the hitch tightners the welds broke on the little tabs. So my review seems to have been somewhat premature. Not very good quality control, good idea if it worked properly.
David - 03/01/2019


- BX88312

Product is easy to use and definitely h eavy-duty! 276916

Still works great after a full year of use. I have had no issues with the U bolt threads stripping. Still nice and tight!
Mark K - 07/27/2017


- BX88312

Works perfectly, no play in connection. 277754

- BX88312

Ordered this product to stop hitch rattle while towing a Ford F350srw behind a motor home. Product arrived on time and in good condition. Easy to install but did not work. On the first use, the anti-rattle steel bracket bent. This product could not handle the weight of the F350srw. Wasted my money. 521657

- BX88312

I realize that they cannot make this item custom for every application, so I had to made a couple of mods to work on my 2015 Chevy 2500HD. Having said this, this Immobilizer does the job well. Would recommend it over other products like it. 256843

- BX88312

Haven't used it yet. Came in yesterday. We will see how it works, the Blue Ox probably needs to be re-designed. On the 2016 Ram 2500 with the 2 1/2" receiver and 2" adapter it comes with, you can only use one of the u-bolts on it, there is no clearance or room to install the u-bolt that is closes to the receiver hitch. It seemed to tighten everything down and no play in the tow bar, but not sure if the single u-bolt will hold up towing a trailer when I take it out. The locking device needs about another inch or so in width to use both u-bolts. 295098

- BX88312

I gave the product 5 stars because it appears to be a solid, well built product. However, I will be returning it because it WILL NOT fit a Ram 2500 class V hitch with 2" adapter. First of all the plate is too short to clamp over the lip of the receiver and allow enough room for both of the U bolts to slide over a 2" accessory. And second, the safety chain mounts get in the way of the plate being able to slide all the way over the hitch. It just needs to be redesigned to fit all models of vehicles with class V hitches. Until then, I will keep looking for the right solution. 353361

- BX88312

Great and prompt customer service. Part fits well. No issues 739057

- BX88312

Nice product, came quickly which is usually the case for etrailer. Well run company 730421

- BX88312

Fit great can’t wait to test it out .All play in receiver gone. 711628

- BX88312

Works for my GMC 2500. No more side to side movement of my toy hauler! 662325

- BX88312

Quick to ship and a great product. Works really well to stop the slop and rattle. 661339

- BX88312

Works perfectly 595997

- BX88312

The immobilized 111 I purchase is working find. I do recommend the u -bolt be a tab longer. Thanks 275303


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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Video Edited:
Dustin K
Installed by:
Cole B
Installed by:
Randy B
Written by:
Shelly K
Video by:
Jonathan Y
Updated by:
Hannah L

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