Eaton Posi limited-slip | GM 9.5″ Rear Chevy 1981-2013 | 33 Spline Axles | All Gear Ratios

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: 19590-010

Traction Type: Eaton Posi limited-slip

Carrier Break: All Gear Ratios

Differential: GM 9.5 Inch

Vehicle Fitment

• 1988 – 1999        Chevrolet             C1500
• 1979 – 1986        Chevrolet             C20
• 1988 – 2000        Chevrolet             C2500
• 1996 – 1997        Chevrolet             C2500 Suburban
• 1996 – 2014        Chevrolet             Express 1500
• 1996 – 2013        Chevrolet             Express 2500
• 1979 – 1995        Chevrolet             G20
• 1979 – 1996        Chevrolet             G30
• 1988 – 1999        Chevrolet             K1500
• 1996     Chevrolet             K1500 Suburban
• 1979 – 1986        Chevrolet             K20
• 1979 – 1986        Chevrolet             K20 Suburban
• 1988 – 2000        Chevrolet             K2500
• 1997 – 2013        Chevrolet             Tahoe
• 1997 – 1999        Chevrolet             C1500 Suburban
• 1999 – 2013        Chevrolet             Silverado 1500
• 2000 – 2014        Chevrolet             Suburban 1500
• 2007 – 2013        Chevrolet             Avalanche
• 2000 – 2013        Chevrolet             Suburban 2500
• 2010 – 2014        Chevrolet             Express 3500
• 1999 – 2004        Chevrolet             Silverado 2500
• 2002 – 2006        Chevrolet             Avalanche 1500
• 2003 – 2006        Chevrolet             SSR
• 2002 – 2006        Chevrolet             Avalanche 2500
• 1988 – 1999        GMC      C1500
• 1979 – 2000        GMC      C2500
• 1996 – 2013        GMC      Savana 2500
• 1992 – 1996        GMC      G3500
• 1988 – 1999        GMC      K1500
• 1979 – 1996        GMC      K2500 Suburban
• 1988 – 2000        GMC      K2500
• 1987     GMC      R2500
• 1987 – 1991        GMC      R2500 Suburban
• 1992 – 2013        GMC      Yukon
• 1987     GMC      V2500
• 1997     GMC      K1500 Suburban
• 1999 – 2013        GMC      Sierra 1500
• 2000 – 2014        GMC      Yukon XL 1500
• 2000 – 2013        GMC      Yukon XL 2500
• 2010 – 2014        GMC      Savana 3500
• 1999 – 2004        GMC      Sierra 2500
• 2003 – 2009        Hummer              H2

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)