USA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 3.42 Ratio

USA Standard Gear ring and pinion sets are designed to exceed OEM specification. All sets receive rigorous in-house quality evaluation to ensure products pass dimensional, material, and fitment testing.This Part Fits: Year Make Model Submodel 1969-1974 Chevrolet Blazer Base 1987 Chevrolet Blazer Custom Deluxe 1987 Chevrolet Blazer Silverado 1978-1980 Chevrolet C10 Big Ten 1975-1981 Chevrolet C10 Cheyenne 1981-1986 Chevrolet C10 Custom 1975-1980 Chevrolet C10 Custom Deluxe 1981 Chevrolet C10 Deluxe 1975-1986 Chevrolet C10 Scottsdale 1975-1986 Chevrolet C10 Silverado 1963-1974 Chevrolet C10 Pickup Base 1975-1981 Chevrolet G10 Beauville 1981 Chevrolet G10 Bonaventure 1975-1981 Chevrolet G10 Chevy Van 1975-1981 Chevrolet G10 Sportvan 1967,1969-1974 Chevrolet G10 Van Base 1968-1974 Chevrolet G10 Van Sportvan 1975-1981 Chevrolet K10 Cheyenne 1981-1986 Chevrolet K10 Custom 1975-1980 Chevrolet K10 Custom Deluxe 1981 Chevrolet K10 Deluxe 1975-1986 Ch