Eaton Detroit TrueTrac Dana 35 27 Spline 3.54 Up Rear Differential - 912A569

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  • Eaton | Part Number: EAT912A569
  • Popular Axle Manufacture:Dana
  • Axle Location:Rear
  • Fitment:Universal Fit
  • Axle Type:Dana 35
  • Availability:In Stock
  • Axle Spline:27 Splines
  • Differential Type:Limited Slip Assembly


The Detroit TrueTrac Limited Slip is an all gear driven clutchless differential. The TrueTrac will automatically provide smooth transfer of power from the slipping wheel to the non slipping wheel to help you out of a jam. With no clutches to wear out, you will have a dependable long lasting Limited Slip differential.

Customer Reviews

4.9 4.9
7 Customer ratings
5.0 Truetrac dana 35

great intermediate option for the weekend warrior who doesn't want a true locker or the price. Works great goes almost unnoticeable until you need it

from mass |
5.0 I thinking of buying for the front now

rock crawling grrrrrreat havent found one yet

from chaparral , NM. |
5.0 Works great!

Once you get in the rough! You'll see why this item was a great purchase.

from Woodland hills, CA. |
5.0 Unreal

Had a lot of lockers. This one is the best.

from Temecula Ca. |
4.0 works great

I've been running these in both ends of my jeep for about two months now, the increase in traction is amazing. they are not full lockers but they do a very good job at what they are supposed to do I have not had any problems on or off road with them. they have taken me through deep snow and over icy roads in 2wd when even the 4x4s where havin a hard the rocks i have next to no wheel spin trying to climb obsticals that used to not be able to climb. if you are not building a dedicated trail machine and you want to avoid the cost of selectable lockers and the handleing quirks of auto lockers this is what you want

from Ft. Riley, KS Cheyenne, WY |



Question & Answers

10 Answered questions

Q: I have a 93 Jeep Wrangler, stock axles and diffs, 30 and 35. Will fit either the front or back on my Jeep. Is there one made for the 30 front Answer this question

A: We need a little more info about your setup to get you the correct parts. Please call our sales line toll free at 1-877-474-4821

Answered by Brent from 4WP HQ on 07/12/2021

Q: Wanting to add to my 2000 TJ, while I'm adding Dana 35 Chromalloy rear axels. I have 3.73 gears. Will this fit? Do I need other parts other than 2 new axel kits and this new differential? Would this fix be an intermediate level fix? Answer this question

A: Yes , it will as long as you know it is a 27 spline.

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

Q: D you have Dana 35 Eaton Lockers with 31 spline Answer this question

A: The only Dana 35 lockers they have is for 27 spline.

Answered by Kelly from Ohio on 10/05/2020

Q: Will the true tracker reduce my speed in my jeep in any way. Will I still be able operate at hi way speed? Answer this question

A: Sir, A locker will never affect the speed or your speedometer unless you change tire size then you will need to change your gears to accommodate the larger radius of a tire. Hope this helps thanks for your question.

Answered by RK on 03/31/2015

Q: I have a 2006 Tacoma (access cab), 4 cyl, AT, 2WD. Will this fit my vehicle or is there anything available for it? Answer this question

A: Hello Yes there is a few different units you can get. Here are a few links to the units for your truck.

Answered by Rody on 03/16/2015


The Eaton Corporation has enjoyed over a century of innovation and is in the business of powering Jeeps with a top-rate lineup of lockers, open differentials and limited slips. Traction performance is critical while jeeping and we carry Eaton components for upgrading vehicle traction. Compatible with different axle splines and various gears, these parts are often rebuildable and are top performers on and off-road. Eaton's rich tradition of engineering innovative, dependable products extends to off-road parts and accessories for 4x4s and they have evolved to become the industry standard in differentials, lockers and limited slips. Shop Eaton Now


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