Eaton Posi Limited Slip Differential (MPN: Q19557-010)

Enhance traction control for muscle cars and race vehicles.

The Eaton Posi limited-slip differential is engineered to improve traction control in various vehicles, including muscle cars, street rods, and light-duty pickups. This differential features a robust design with race-bred carbon disc clutch packs that engage automatically, ensuring smooth power transfer between wheels without requiring driver intervention. The preloaded central spring assembly enhances the clamping load on the clutch packs, effectively preventing wheel slip during torque changes.

Constructed from durable steel, the Eaton Posi is designed for performance and longevity. Its rebuildable design allows for customization, enabling users to tune the differential to their specific performance needs through various spring packs. With a spline count of 28 and compatibility with GM 10 Bolt 8.5 Inch ring gear axles, this limited-slip differential is suitable for gear ratios of 2.73 and higher, making it a versatile choice for high-performance applications.

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)

Specifications

• Manufacturer: Eaton TCPD
• Manufacturer Part Number: Q19557-010
• Axle Model: GM 10 Bolt 8-1/2 Inch Ring Gear
• Type: Limited Slip
• Spline Count: 28
• Gear Ratio: 2.73
• Material: Steel

Compatibility / Fit

• 1978-1981 Buick Century
• 1978-1989 Buick Electra
• 1978-1983 Buick Estate Wagon
• 1978-1989 Buick LeSabre
• 1978-1987 Buick Regal
• 1978-1978 Buick Riviera
• 1978-1980 Buick Skyhawk
• 1978-1979 Buick Skylark
• 1987-1989 Cadillac Brougham
• 1982-1984 Cadillac DeVille
• 1982-1986 Cadillac Fleetwood
• 1975-1986 Chevrolet C10
• 1972-1974 Chevrolet C10 Pickup
• 1988-1989 Chevrolet C1500
• 1978-1989 Chevrolet Camaro
• 1978-1989 Chevrolet Caprice
• 1978-1987 Chevrolet El Camino
• 1978-1979 Chevrolet G20
• 1978-1985 Chevrolet Impala
• 1975-1986 Chevrolet K10
• 1972-1974 Chevrolet K10 Pickup
• 1977-1979 Chevrolet K10 Suburban
• 1988-1989 Chevrolet K1500
• 1977-1986 Chevrolet K20
• 1988-1988 Chevrolet K2500
• 1977-1986 Chevrolet K30
• 1988-1988 Chevrolet K3500
• 1978-1983 Chevrolet Malibu
• 1978-1988 Chevrolet Monte Carlo
• 1978-1980 Chevrolet Monza
• 1978-1979 Chevrolet Nova
• 1987-1987 Chevrolet R10
• 1987-1987 Chevrolet V10
• 1987-1987 Chevrolet V20
• 1987-1988 Chevrolet V30
• 1975-1978 GMC C15
• 1972-1974 GMC C15/C1500 Pickup
• 1979-1986 GMC C1500
• 1988-1989 GMC C1500
• 1978-1978 GMC G25
• 1979-1979 GMC G2500
• 1975-1978 GMC K15
• 1972-1974 GMC K15/K1500 Pickup
• 1979-1986 GMC K1500
• 1988-1989 GMC K1500
• 1977-1978 GMC K25
• 1979-1986 GMC K2500
• 1988-1988 GMC K2500
• 1977-1978 GMC K35
• 1979-1986 GMC K3500
• 1988-1988 GMC K3500
• 1987-1987 GMC R1500
• 1987-1987 GMC V1500
• 1987-1987 GMC V2500
• 1988-1988 GMC V3500
• 1978-1989 Oldsmobile Custom Cruiser
• 1978-1981 Oldsmobile Cutlass
• 1978-1984 Oldsmobile Cutlass Calais
• 1980-1983 Oldsmobile Cutlass Cruiser
• 1978-1980 Oldsmobile Cutlass Salon
• 1985-1987 Oldsmobile Cutlass Salon
• 1978-1987 Oldsmobile Cutlass Supreme
• 1978-1985 Oldsmobile Delta 88
• 1978-1979 Oldsmobile Omega
• 1978-1986 Pontiac Bonneville
• 1978-1981 Pontiac Catalina
• 1978-1989 Pontiac Firebird
• 1978-1980 Pontiac Grand Am
• 1978-1981 Pontiac Grand LeMans
• 1978-1987 Pontiac Grand Prix
• 1978-1978 Pontiac Grand Safari
• 1978-1981 Pontiac LeMans
• 1983-1986 Pontiac Parisienne
• 1978-1979 Pontiac Phoenix

Technical Documents

• eaton-differential-warranty-en.pdf