Eaton Posi limited-slip | GM 8.5/8.6″ Front/Rear Chevy 1989-2018 | 30 Spline Axles | 2.73 & Up

The Eaton Posi limited-slip differential is the perfect way to control traction in street rods, light duty pickups and all types of tarmac running race cars.

Specs

Part Number: 19559-010

Traction Type: Eaton Posi limited-slip

Carrier Break: 2.73 & Up

Differential: GM 8.5/8.6″

Vehicle Fitment

• 1999 – 2013        Cadillac Escalade
• 2003 – 2013        Cadillac Escalade ESV
• 2002 – 2009        Cadillac Escalade EXT
• 1988 – 1998        Chevrolet             C1500
• 1991 – 1996        Chevrolet             Caprice
• 1996 – 2013        Chevrolet             Express 1500
• 1988 – 1995        Chevrolet             G10
• 1988 – 1995        Chevrolet             G20
• 1994 – 1996        Chevrolet             Impala
• 1988 – 1998        Chevrolet             K1500
• 1996 – 1996         Chevrolet             K1500 Suburban
• 1988 – 1991         Chevrolet             K2500
• 1995 – 2000        Chevrolet             Blazer
• 1995 – 2013        Chevrolet             Tahoe
• 1996 – 1996        Chevrolet             C1500 Suburban
• 1994 – 1994         Chevrolet             S10
• 1999 – 2019        Chevrolet             Silverado 1500
• 2002 – 2008       Chevrolet             Trailblazer
• 2000 – 2013        Chevrolet             Suburban 1500
• 2007 – 2013        Chevrolet             Avalanche
• 2004 – 2012        Chevrolet             Colorado
• 2000 – 2013        Chevrolet             Suburban 2500
• 2002 – 2006        Chevrolet             Avalanche 1500
• 2003 – 2006        Chevrolet             SSR
• 1988 – 1998            GMC      C1500
• 1988 – 1995            GMC      G1500
• 1996 – 2013            GMC      Savana 1500
• 1988 – 1995            GMC      G2500
• 1988 – 1998            GMC      K1500
• 1996 – 1997            GMC      K1500 Suburban
• 1988 – 1991            GMC      K2500
• 1988 – 1991            GMC      R1500 Suburban
• 1994 – 2004           GMC      Sonoma
• 1992 – 2013            GMC      Yukon
• 1994 – 2005           GMC      Jimmy
• 1999 – 2019            GMC      Sierra 1500
• 2000 – 2013           GMC      Yukon XL 1500
• 2002 – 2008         GMC      Envoy
• 2004 – 2012          GMC      Canyon
• 2003 – 2008         Isuzu     Ascender
• 2006 – 2010         Hummer              H3
• 2009 – 2010         Hummer              H3T

Download EATON Application Guide PDF

Operation

The Posi prevents wheel slip before it can get started. Racebred carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. When torque input changes (one wheel slips), the clamping load on the clutch packs increases, causing them to smoothly transfer power to the other wheel as needed.

Performance

The Eaton Posi is smooth and automatic, requiring no driver input. Featuring pyrolytic carbon clutches and a rebuildable design, the Posi can be custom tuned for your desired performance.

Lubrication

A quality, petroleum-mineral based, GL5 rated 80w-90 gear oil should be used. It is necessary to add a four-ounce bottle of friction modifier for optimum performance (if friction modifier has not already been added to the petroleum-mineral based gear oil).

Features

• Superior rebuildable design
• Race-bred carbon friction discs
• Limited-slip operation
• Smooth and automatic engagement – no driver action needed
• Tunable via various spring packs (a.k.a. pre-loads)