Eaton ELocker Differential Jeep JL/JT Dana 44 M210 / M220 32 Spline 1.41 Axle Shaft Dia.
Plenty of Jeep Wrangler JL and Gladiator JT owners have the stout Dana 44 class M210 front or M220 rear axle but no locker in it, so the truck still gets stuck with one tire spinning. The Eaton ELocker 14234-1 is the electric selectable locker for the M210 and M220, with 32-spline axle shafts and all gear ratios. One part number covers either end of the vehicle, which makes it the go-to choice for a non-Rubicon JL or JT with the heavier axles, and Eaton dealers also list it for the 2021-up sixth generation Ford Bronco with the same Dana axles.
The 14234-1 replaces the factory carrier, and your ring gear moves over to it. With the switch off it is an open differential, so steering, tire wear and highway manners stay stock. When you press the included rocker switch, an electromagnet engages the locking mechanism and ties both side gears to the case, so both wheels on that axle turn together and get equal torque. Engagement is listed at roughly 0.14 seconds, and a second press releases it. Installed in the front M210, it lets you climb with all four tires pulling while still steering easily when unlocked. Installed in the rear M220, it is the single biggest traction upgrade for a stock-axle JT or JL.
Find the axle tag or the housing cast numbers. M210 and M220 refer to 210 mm and 220 mm ring gears; the smaller 186 mm front and 200 mm rear used on many non-Rubicon JLs take different lockers, such as the Eaton ELocker 14244-1 for the JL Dana 35 M200 rear. Next, count the axle shaft splines. Factory M210/M220 shafts are 32 spline with a 1.41 inch diameter; if you have upgraded to 35-spline aftermarket shafts in the M220, use the 35-spline M220 ELocker 14313-2 instead. Rubicon trims already have factory lockers in these axles.
Listed for the Dana 44 M210 front or M220 rear with 32-spline axle shafts, all gear ratios, no carrier break, on the 2018-up Jeep Wrangler JL, the 2020-up Gladiator JT and the 2021-up Ford Bronco. Axle combinations differ by trim, package and model year, so check the ring gear size and spline count on your vehicle, or send us the year and VIN and we will confirm it. Browse more axle parts on our hard parts page.
| Brand | Eaton |
| Part number | 14234-1 |
| Fits | Eaton ELocker Differential Jeep JL/JT Dana 44 M210 / M220 32 Spline 1.41 Axle Shaft Dia. |
| Type | Differentials |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. The same unit is listed for the M210 front and the M220 rear as long as the shafts are 32 spline. Many owners buy two.
It is listed for 2020-up Gladiator JT axles with the M210/M220 and 32-spline shafts. Confirm the axle tag before ordering, or send us your VIN.
Yes. There is no carrier break, so it accepts all ratios, including the 4.56 to 5.13 ratios common with 35 to 37 inch tires.
No. This unit is 32 spline. A 35-spline M220 rear takes the Eaton ELocker 14313-2.
The ELocker carrier with an Eaton locking rocker switch and wiring harness. Carrier bearings, shims and gear oil are not included.
A shop with setup tools typically needs a few hours per axle. Because preload, backlash and pattern must be set, it is a job for someone with gear setup experience.
