The Eaton Posi is a clutch-type limited-slip differential built with race-bred carbon friction discs in a fully rebuildable housing. Net-forged internal gears add strength, and clutch preload can be tuned by swapping spring packs to dial in bias for the application. It operates automatically and smoothly and is backed by service kits for discs, shims, and preload springs.
- Type: Clutch-type limited-slip differential (carbon discs)
- Axle: Ford 8.8in (C-clip)
- Ring gear: 8.8in
- Axle shaft diameter: 1.32in
- Spline count: 31
- Gear ratio: fits all ratios
- Rebuildable: Yes, tunable clutch preload
- Part number: 19588-010
Axle Fitment
Fits the Ford 8.8in axle, 31-spline, with all ratios. This axle appears across 1986-2014 Ford 8.8in car and truck applications. Confirm your axle and spline count.
FAQ
What axle does the Posi 19588-010 fit?
It fits the Ford 8.8in axle with a 31-spline count and 8.8in ring gear, across 1986-2014 Ford 8.8 car and truck applications.
Is the Eaton Posi rebuildable?
Yes. It uses carbon friction discs in a fully rebuildable housing, and clutch preload can be tuned by swapping spring packs.
Does it need special maintenance?
It operates automatically and smoothly. Use the correct limited-slip friction additive with your gear oil.

