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The Eaton Posi limited-slip differential prevents wheel slip before it can get started. To do that, carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. When torque input increases the clamping load on the clutch packs increases. That causes the chatter-free clutch packs to grab and transfer power to the other wheel. Muscle cars, hot rods and mild off-road vehicles should look to Eatonss limited-slip differential for their traction answers. And the fact is, Eatons Posi units are virtually bullet proof.
Installation Instructions
This Part Fits:
Eaton Posi Differential 28 Spline 1.20in Axle Shaft Diameter 2.73 & Up Ratio Front/Rear 8.5in
SKU: EAT19557-010
$750.99 USD
Shipping calculated at checkout.
Special Order Item Delivery times depend on manufacturer fulfillment and carrier performance. Expedited shipping reflects how the order is placed with the manufacturer and does not guarantee delivery dates. However, due to FI Performance’s industry relationships, we may be able to assist with expedited processing when possible. If timing is critical, please call us before ordering at (203) 644-0712.
Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1973-1975 | Buick | Apollo | Base |
| 1975 | Buick | Apollo | SR |
| 1971-1973 | Buick | Centurion | Base |
| 1973-1977,1980-1981 | Buick | Century | Base |
| 1975-1979,1982-1989 | Buick | Century | Custom |
| 1980-1981,1984 | Buick | Century | Estate |
| 1985-1989 | Buick | Century | Estate Wagon |
| 1976 | Buick | Century | Indianapolis 500 Pace Car |
| 1978-1989 | Buick | Century | Limited |
| 1973-1975 | Buick | Century | Luxus |
| 1984 | Buick | Century | Olympia Limited |
| 1975-1979 | Buick | Century | Special |
| 1978-1981 | Buick | Century | Sport |
| 1983-1986 | Buick | Century | T-Type |
| 1971-1974,1976-1979 | Buick | Electra | 225 |
| 1971-1974 | Buick | Electra | 225 Custom |
| 1974 | Buick | Electra | 225 Limited |
| 1973 | Buick | Electra | Base |
| 1975 | Buick | Electra | Custom |
| 1980-1989 | Buick | Electra | Estate Wagon |
| 1975-1989 | Buick | Electra | Limited |
| 1978-1989 | Buick | Electra | Park Avenue |
| 1989 | Buick | Electra | Park Avenue Ultra |
| 1985-1989 | Buick | Electra | T-Type |
| 1971-1983 | Buick | Estate Wagon | Base |
| 1971-1972 | Buick | GS | Base |
| 1971-1972 | Buick | GS 455 | Base |
| 1971-1981,1987-1989 | Buick | LeSabre | Base |
| 1985 | Buick | LeSabre | Collector's Edition |
| 1971-1973,1975-1978,1982-1989 | Buick | LeSabre | Custom |
| 1977 | Buick | LeSabre | Custom Sport |
| 1985-1989 | Buick | LeSabre | Estate Wagon |
| 1979-1989 | Buick | LeSabre | Limited |
| 1982 | Buick | LeSabre | Limited Edition F/E |
| 1974 | Buick | LeSabre | Luxus |
| 1978-1981 | Buick | LeSabre | Sport |
| 1987 | Buick | LeSabre | T-Type |
| 1976-1979 | Buick | Opel | Base |
| 1977-1979 | Buick | Opel | Deluxe |
| 1978-1979 | Buick | Opel | Sport |
| 1988-1989 | Buick | Reatta | Base |
| 1973-1987 | Buick | Regal | Base |
| 1988-1989 | Buick | Regal | Custom |
| 1982-1983 | Buick | Regal | Estate Wagon |
| 1987 | Buick | Regal | GNX |
| 1989 | Buick | Regal | Gran Sport |
| 1984-1987 | Buick | Regal | Grand National |
| 1978-1989 | Buick | Regal | Limited |
| 1982 | Buick | Regal | Limited Turbo |
| 1978-1982 | Buick | Regal | Sport |
| 1976-1977 | Buick | Regal | SR |
| 1983-1986 | Buick | Regal | T-Type |
| 1971-1985 | Buick | Riviera | Base |
| 1971 | Buick | Riviera | Gran Sport |
| 1975 | Buick | Riviera | GS |
| 1982 | Buick | Riviera | Limited Edition |
| 1983-1989 | Buick | Riviera | Luxury |
| 1978 | Buick | Riviera | LXXV Anniversary Edition |
| 1979-1980 | Buick | Riviera | S |
| 1976 | Buick | Riviera | Sport |
| 1976 | Buick | Riviera | SR |
| 1981-1989 | Buick | Riviera | T-Type |
| 1983 | Buick | Riviera | XX Anniversary Edition |
| 1975-1980 | Buick | Skyhawk | Base |
| 1982-1989 | Buick | Skyhawk | Custom |
| 1980 | Buick | Skyhawk | Designers' Accent Edition |
| 1982-1987 | Buick | Skyhawk | Limited |
| 1979-1980 | Buick | Skyhawk | Road Hawk |
| 1975-1980 | Buick | Skyhawk | S |
| 1988-1989 | Buick | Skyhawk | SE |
| 1986-1987 | Buick | Skyhawk | Sport |
| 1983-1987 | Buick | Skyhawk | T-Type |
| 1972 | Buick | Skylark | 350 |
| 1971-1972,1975-1982 | Buick | Skylark | Base |
| 1971-1972,1978-1979,1983-1989 | Buick | Skylark | Custom |
| 1980-1989 | Buick | Skylark | Limited |
| 1976-1979 | Buick | Skylark | S |
| 1978,1980-1983 | Buick | Skylark | Sport |
| 1975-1977 | Buick | Skylark | SR |
| 1983-1984 | Buick | Skylark | T-Type |
| 1986-1987 | Buick | Somerset | Custom |
| 1986-1987 | Buick | Somerset | Limited |
| 1986 | Buick | Somerset | T-Type |
| 1985 | Buick | Somerset Regal | Base |
| 1985 | Buick | Somerset Regal | Limited |
| 1971-1972 | Buick | Sportwagon | Base |
| 1971-1975 | Chevrolet | Bel Air | Base |
| 1987-1989 | Chevrolet | Beretta | Base |
| 1989 | Chevrolet | Beretta | GT |
| 1971-1972 | Chevrolet | Biscayne | Base |
| 1971-1972 | Chevrolet | Brookwood | Base |
| 1971-1980,1988 | Chevrolet | Camaro | Base |
| 1979-1986 | Chevrolet | Camaro | Berlinetta |
| 1985-1989 | Chevrolet | Camaro | Iroc-Z |
| 1973-1978,1987 | Chevrolet | Camaro | LT |
| 1976-1978 | Chevrolet | Camaro | LT Rally Sport |
| 1976-1980 | Chevrolet | Camaro | Rally Sport |
| 1971-1973,1975,1989 | Chevrolet | Camaro | RS |
| 1981-1987 | Chevrolet | Camaro | Sport |
| 1971-1972 | Chevrolet | Camaro | SS |
| 1971-1974,1977-1987 | Chevrolet | Camaro | Z28 |
| 1982 | Chevrolet | Camaro | Z28 Indianapolis 500 Pace Car |
| 1971-1972,1986-1989 | Chevrolet | Caprice | Base |
| 1973-1989 | Chevrolet | Caprice | Classic |
| 1986-1989 | Chevrolet | Caprice | Classic Brougham |
| 1976-1978,1981-1982 | Chevrolet | Caprice | Classic Estate |
| 1976-1981 | Chevrolet | Caprice | Classic Landau |
| 1987-1989 | Chevrolet | Caprice | Classic LS Brougham |
| 1975-1976,1979-1980 | Chevrolet | Caprice | Classic Sport |
| 1973-1974 | Chevrolet | Caprice | Estate |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1982-1989 | Chevrolet | Cavalier | Base |
| 1982 | Chevrolet | Cavalier | Cadet |
| 1982-1986 | Chevrolet | Cavalier | CL |
| 1983-1987 | Chevrolet | Cavalier | CS |
| 1984 | Chevrolet | Cavalier | Olympic |
| 1986-1989 | Chevrolet | Cavalier | RS |
| 1984-1985 | Chevrolet | Cavalier | Type-10 |
| 1988-1989 | Chevrolet | Cavalier | VL |
| 1986-1989 | Chevrolet | Cavalier | Z24 |
| 1982-1989 | Chevrolet | Celebrity | Base |
| 1982-1983,1989 | Chevrolet | Celebrity | CL |
| 1985 | Chevrolet | Celebrity | Classic |
| 1982 | Chevrolet | Celebrity | CS |
| 1985-1987 | Chevrolet | Celebrity | Estate |
| 1984-1989 | Chevrolet | Celebrity | Eurosport |
| 1971-1972 | Chevrolet | Chevelle | Base |
| 1971-1972 | Chevrolet | Chevelle | Concours |
| 1971-1972 | Chevrolet | Chevelle | Concours Estate |
| 1973 | Chevrolet | Chevelle | Deluxe |
| 1971-1972 | Chevrolet | Chevelle | Greenbrier |
| 1971-1972 | Chevrolet | Chevelle | Malibu |
| 1971-1972 | Chevrolet | Chevelle | Nomad |
| 1971-1972 | Chevrolet | Chevelle | SS |
| 1976-1985 | Chevrolet | Chevette | Base |
| 1984-1987 | Chevrolet | Chevette | CS |
| 1982 | Chevrolet | Chevette | Diesel |
| 1977 | Chevrolet | Chevette | Rally Sport |
| 1976 | Chevrolet | Chevette | Rallye |
| 1983 | Chevrolet | Chevette | S |
| 1977 | Chevrolet | Chevette | Sandpiper |
| 1976-1983 | Chevrolet | Chevette | Scooter |
| 1976 | Chevrolet | Chevette | Sport |
| 1976 | Chevrolet | Chevette | Woody |
| 1980-1983 | Chevrolet | Citation | Base |
| 1980 | Chevrolet | Citation | Club |
| 1980 | Chevrolet | Citation | Custom |
| 1980-1983 | Chevrolet | Citation | X-11 |
| 1984-1985 | Chevrolet | Citation II | Base |
| 1984-1985 | Chevrolet | Citation II | X-11 |
| 1987-1989 | Chevrolet | Corsica | Base |
| 1987-1988 | Chevrolet | Corsica | LT |
| 1989 | Chevrolet | Corsica | LTZ |
| 1988 | Chevrolet | Corvette | 35th Anniversary Edition |
| 1971-1974,1977-1982,1984-1989 | Chevrolet | Corvette | Base |
| 1982 | Chevrolet | Corvette | Collector's Edition |
| 1978,1986 | Chevrolet | Corvette | Indianapolis 500 Pace Car |
| 1978 | Chevrolet | Corvette | Silver Anniversary Edition |
| 1975-1976 | Chevrolet | Corvette | Stingray |
| 1971-1985 | Chevrolet | Impala | Base |
| 1975-1977 | Chevrolet | Impala | Custom |
| 1976 | Chevrolet | Impala | Custom Landau |
| 1981-1982 | Chevrolet | Impala | Estate |
| 1977-1979 | Chevrolet | Impala | Landau |
| 1976 | Chevrolet | Impala | S |
| 1975-1976,1979-1980 | Chevrolet | Impala | Sport |
| 1971-1972 | Chevrolet | Kingswood | Base |
| 1971-1972 | Chevrolet | Kingswood | Estate |
| 1973-1975 | Chevrolet | Laguna | Base |
| 1973 | Chevrolet | Laguna | Estate |
| 1975-1976 | Chevrolet | Laguna | S3 |
| 1974 | Chevrolet | Laguna | Type S-3 |
| 1973-1981 | Chevrolet | Malibu | Base |
| 1974-1983 | Chevrolet | Malibu | Classic |
| 1975-1976,1978-1980 | Chevrolet | Malibu | Classic Estate |
| 1976-1981 | Chevrolet | Malibu | Classic Landau |
| 1977,1979-1980 | Chevrolet | Malibu | Classic Sport |
| 1973-1974,1979-1980 | Chevrolet | Malibu | Estate |
| 1976,1979 | Chevrolet | Malibu | Landau |
| 1979 | Chevrolet | Malibu | Police |
| 1977,1979-1980 | Chevrolet | Malibu | Sport |
| 1971-1974,1979,1981-1988 | Chevrolet | Monte Carlo | Base |
| 1983 | Chevrolet | Monte Carlo | CL |
| 1973-1974,1976,1978-1981 | Chevrolet | Monte Carlo | Landau |
| 1986-1988 | Chevrolet | Monte Carlo | LS |
| 1973,1975-1977 | Chevrolet | Monte Carlo | S |
| 1978,1980 | Chevrolet | Monte Carlo | Sport |
| 1983-1988 | Chevrolet | Monte Carlo | SS |
| 1975-1980 | Chevrolet | Monza | 2+2 |
| 1978-1980 | Chevrolet | Monza | 2+2 Sport |
| 1976-1980 | Chevrolet | Monza | 2+2 Spyder |
| 1976,1978-1980 | Chevrolet | Monza | Base |
| 1977 | Chevrolet | Monza | Mirage |
| 1975,1978-1979 | Chevrolet | Monza | S |
| 1978 | Chevrolet | Monza | Sport |
| 1980 | Chevrolet | Monza | Spyder |
| 1976-1977 | Chevrolet | Monza | Towne Coupe |
| 1976-1977 | Chevrolet | Monza | Towne Coupe Cabriolet |
| 1976-1977 | Chevrolet | Monza | Towne Coupe Sport |
| 1976 | Chevrolet | Monza | Towne Coupe Spyder |
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