Eaton Detroit Truetrac Differential 28 Spline 1.20in Axle Shaft Diameter 2.73 & Up Ratio Rear 8.5in

The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. It remains the leading helical gear-type limited slip differential in the industry. Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintenance free traction recognized not only for its toughness, but its smooth and quiet operation as well.Proven design, low cost and effective performance all make the Detroit Truetrac limited slip differential the ideal choice for a wide variety of vehicle applications. No maintenance - Just Traction.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 B