Overview
The Eaton Posi Limited Slip Differential, part number 19590-010, is a rear limited slip assembly for GM 14 bolt 9.5 inch axles with 33 splines. Eaton uses carbon fiber clutches and preload springs, and the unit can be rebuilt.
The 33 spline count and 9.5 inch axle type are the main details to match before buying. Compare them against the axle you have now rather than a vehicle name.
Key features
- Posi limited slip design
- 33 splines
- GM 14 bolt 9.5 inch rear axle
- Carbon fiber clutches
- Rebuildable unit
Posi carriers and axle builds
A Posi carrier is a common upgrade for GM 14 bolt rear axles because it keeps both wheels driving on slippery ground. The trade-off is that it adds load to the clutch pack and to the axle bearings, so the rest of the axle should be in good condition. Check the axle shafts, bearings and seals before committing to a full build, since those parts take the same loads.
Spline count and axle width decide what will bolt in, so measure your current carrier and compare before you order. Keep the ring gear and pinion in matched sets, and avoid mixing new and worn gears. When the unit is serviced, look for uneven clutch wear and replace the springs and clutches as a set.
Specifications
| Brand | Eaton |
|---|---|
| Part number | 19590-010 |
| Axle manufacturer | GM |
| Axle type | GM 14 bolt 9.5 inches |
| Axle location | Rear |
| Axle spline | 33 splines |
| Differential type | Limited slip assembly |
| Clutches | Carbon fiber |
| Fitment label | Universal fit |
Vehicle fitment
No vehicle years or models are given for this Posi unit. The GM 14 bolt 9.5 inch axle type is the match point, so confirm it against your current carrier and spline count.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Fitting a Posi carrier involves bearing preload and ring and pinion setup, so have an axle professional install it.
What’s included
The unit is named on its own, and ring gear, pinion and axle shafts aren’t itemized.
