Eaton Dana 44 30 Spline 3.73 Down 4 Pinion E-Locker - 19977-010 |

Eaton Dana 44 30 Spline 3.73 Down 4 Pinion E-Locker - 19977-010

universal fit logo


  • Eaton | Part Number: EAT19977-010
  • Popular Axle Manufacture:Dana
  • Axle Location:Front|Rear
  • Axle Type:Dana 44
  • Fitment:Universal Fit
  • Axle Spline:30 Splines
  • Differential Type:Selectable Locker


The Eaton ELocker4 is an electronic, selectable differential designed for drivers that need traction on-demand. At the flip of a switch, drivers can go from open to 100-percent locked and back again. The 4 pinion gear design provides added strength and capability for more extreme vehicles, and features the fastest engagement (.14 seconds).

Customer Reviews

0.0 0.0
0 Customer ratings

Question & Answers

10 Answered questions

Q: Have a 2020 JT with a Dana 44 /M220 Rear Axle 3.73 will a EATON Electric Locker, 30-Spline, Dana 44, 3.73 and Lower Ratios fit? Not sure of the spline on my stock Dana 44 Answer this question

A: No this will not work. All 2020 JT’s have 32 spline axles, Rubicon or not. ARB is the only locker available RD245 plus a compressor kit like CKMA12

Answered by Kelly from Ohio on 10/05/2020

Q: I have a 2008 Jeep JK Rubicon with a 30 spline Dana 44 front axle. Will this fit my front axle, or is it only for non-Rubi 30 spline rear axles? Answer this question

A: Hello Your Rubicon takes metric bearings which won't fit this E-Locker. You would have to buy a Dana locker which we carry or switch over to a different unit. Ox locker, Auburn Ected, ARB Air Locker Thanks

Answered by Rody on 09/12/2015

Q: My previous question was not answered properly. I have a 1978 vintage ford Dana 44 high pinion. I am going to be installing it into my 2000 TJ. Going to use 5.13 gears. Want to use Eaton e-locker. According to Eaton's web page, the part number I need is; 19969-010..... Why is this part number NOT listed anywhereon your website, but is listed in your catalog?????? Answer this question

A: Hello It looks like it got TURNED OFF it should be back on shortly.

Answered by Rody on 05/06/2015

Q: Why can I not find an Eaton part number on your web site? Eaton part number; 19969-010 e-locker 3.92 and up. Figment; Dana 44, reverse. Application; 78-79 ford f150 high pinion front. Answer this question

A: Thanks for the inquiry Rob, the Eaton Dana 44 30 Spline 3.73 Down 4 Pinion E-Locker part # EAT19977-010 if you're looking for part # EAT19977-010 I'm not sure why it's not online but we do have them $894.99 in stock, Carl ext-5122.

Answered by RK on 05/06/2015

Q: Can I use with 4.56 gear ratio on a dana44 30spline onjk2013? Answer this question

A: Hello Yes all of the JK rear gears are thick gears so they go on the 373 down carrier. So this is the correct unit for your JK. Thanks

Answered by Rody on 04/20/2015


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