Eaton Detroit TrueTrac Dana 44 3.73 Down Front Differential - 913A591

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  • Eaton | Part Number: EAT913A591
  • Popular Axle Manufacture:Dana
  • Axle Location:Front
  • Axle Type:Dana 44
  • Fitment:Universal Fit
  • Axle Spline:30 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.

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Question & Answers

1 Answered question

Q: I have a 913A590. Can I put it in the front and buy a selectable for the rear? I have axles from an 89 wagoneer that I am regearing and rebuilding. I plan to use 4.56 gears,stock axel shafts and 35in. Tires. My 90 wrangler has a 258 straight 6 that I will keep I have not bout any parts for the build except the trutrack I got cheep from a friend. Any help with part list would be a big help. Thank you. Mike Answer this question

A: Hello The True Trac is directional that is why they make a front and rear for the Dana 44's. You can flip the gears in the true trac side to side to make it a front unit.

Answered by Rody on 02/04/2015


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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