ARB Dana 44 30 Spline 3.92 Ratio Up Air Locking Differential - RD116

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  • ARB 4x4 Accessories | Part Number: ARBRD116
  • Popular Axle Manufacture:Dana
  • Axle Location:Front|Rear
  • Fitment:Universal Fit
  • Axle Type:Dana 44
  • Availability:In Stock
  • Axle Spline:30 Splines
  • Differential Type:Selectable Locker



The ARB Air Locker is a pneumatic locking differential that uses air to facilitate the locking of both axles. This action converts your differential from a conventional open to a full spool type axle supplying 100% power to both wheels to keep you going through the worst terrain. ARB onboard air compressor required to activate Air Lockers. Sold Separately.

Customer Reviews

4.7 4.7
3 Customer ratings
5.0 Arb locker

Fast and just what i ordered. also ordered e locker. No one seems to know what shims fit them at 4wparts tho.

from yakima washington |
5.0 The Gold Standard

The ARB is the best of the best selectable locker out there. You really do get what you pay for. The only draw backs are the cost and the installation, I would not recommend a beginner even try and intsall one. You also need to have and maintain an air source on your vehicle, but that can be a pro as you will now have on board air for other things. But the ARB is really in a class by itself based on quality and reliability.

from Newberg, OR |
4.0 arb air locker

had an issue when in deep snow and ice, first time out, the ice was crushing against the skid plate up against the line, causing a tear in the air line, then loosing both and getting hung real good....but other than that they have worked flawlessly so far.

from indanapolis,in |


Question & Answers

10 Answered questions

Q: Will this fit a 2020 JLU Sport Eco Diesel? It has factory Dana 44's and no factory lockers. I will be converting to 4.56 sears. Answer this question

A: The Jeep JL models that have the Dana AdvanTEK M210 front and M220 rear will use ARBRD245 in both of those 32 spline axles.

Answered by Kelly from 4WP Corporate Headquarters on 09/01/2021

Q: will this fit a 2004 jeep rubicon front diff dana 44 30 spline 4:10 Answer this question

A: No this one is not recommended for Rubicon models.

Answered by Kelly from 4WP Corporate Headquarters on 06/04/2021

Q: I have a high pinion 44 with 5.13 gears and a spool. Will I need anything extra to make this work in the axle? Or is everything that's currently in the axle bolt up to what comes with the arb? Answer this question

A: We need to know the following in order to answer: What year is the h/p 44? Or what is the vehicle? Please call our sales team for further assistance Toll Free: 1-877-474-4821

Answered by Kelly from 4WP Corporate Headquarters on 05/19/2021

Q: Which version of this locker will work with a 3.21 gear ratio?  Answer this question

A: I believe this is the one you are looking for? If not, you can filter the lockers down here:

Answered by Kelly from 4WP Corporate Headquarters on 03/29/2021

Q: Will this work in my 2004 ram 1500 5.7L front axle? Currently I have 3.55 gears, and am converting to 4.10 gears and would like to have a selectable locker in the front end to go with a Detroit locker for the 9.25" rear. Answer this question

A: Thanks for the inquiry Jesse, the ARB 4x4 Accessories Dana 44 30 Spline 3.92 Up Air Locking Differential part # ARBRD116 this is correct for the front axle.

Answered by RK on 07/28/2015


ARB has been manufacturing 4x4 parts for over 40 years. ARB Air Lockers will amplify the traction of your 4x4 on challenging trails. They give the off-road driver what you need in traction, control and performance. ARB believes in its products so it offers a five year, unlimited mile warranty across the air locker range. ARB 4x4 Accessories includes the suspension system brand Old Man Emu, maker of premium off-road shock absorbers. Old Man Emu premium shocks are developed and tuned specifically for each vehicle application. They come complete with vehicle specific mounting kits for fuss free installation. ARB parts are all developed, engineered and fabricated in-house in Australia. Shop ARB 4x4 Accessories Now


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