The Eaton ELocker is an electronic, driver-selectable locking differential. A dash-mounted switch toggles between fully open operation for the street and 100% lock for maximum traction on demand. Net-forged internal gears make it strong and dependable, and installation uses a wiring kit (dash switch, relay, solenoid, harness) plus the axle-specific stator and armature hardware. It is built for the Dana 44 axle in a 30-spline, 3.73 and down fitment.
Specifications
- Type: Electronic selectable locking differential
- Axle: Dana 44
- Ring gear diameter: 8.5in
- Axle shaft diameter: 1.31in
- Spline count: 30
- Gear ratio: 3.73 and down
- Actuation: 12V electric, dash-switch selectable
- Part number: 19977-010
Axle Fitment
- Fits the Dana 44 axle (8.5in ring gear, 30-spline, 3.73 and down) found in Jeep including JK and Chrysler/Dodge trucks. Confirm your axle and spline count.
FAQ
Which axle does the 19977-010 ELocker fit?
It fits the Dana 44 axle with an 8.5in ring gear in a 30-spline, 3.73 and down configuration.
Which platforms use this Dana 44?
It appears in Jeep including the JK and in Chrysler/Dodge trucks. Confirm your axle and spline count.
How is the ELocker actuated?
A 12V dash switch electrically locks and unlocks the differential on demand.
What gear ratios does it cover?
This version is built for 3.73 and numerically lower ratios.

