← Back to search

Differential Ring and Pinion (12, 12)

12BT456T Application Notes

Warranty

1 Year or 50,000 Miles

12BT456T Specifications

App Model GM 8.875 Truck

Cover Bolt Quantity 12, 12

Differential Carrier Break 2.76 to 3.42 Ratio, 2.76 to 3.42 Ratio

Differential Case Design Type GM 8.875 Truck, GM 8.875 Truck

Gear Ratio 4.56, 4.56

Pinion Gear Tooth Quantity 9, 9

Pinion Shaft Diameter 1.438 (Inch), 1.438 (Inch)

Pinion Spline Count 30, 30

Position Rear

Prop 65 Long Label WARNING: Reproductive Harm - www.p65warnings.ca.gov

Prop 65 Short Label WARNING: Cancer - www.p65warnings.ca.gov

Prop 65 Y N N

Ratio 4.56

Ring Gear Bolt Quantity 12, 12

Ring Gear Material 8620 Steel, 8620 Steel

Ring Gear Outside Diameter 8.875 (Inch), 8.875 (Inch)

Ring Gear Rotation Standard, Standard

Ring Gear Tooth Quantity 41, 41

Taxonomy A LD Differential, LD Differential, LD Differential, LD Differential

Taxonomy B Ring and Pinion, Ring and Pinion, Ring and Pinion

Taxonomy C Rear, Rear, Rear

Taxonomy D 4.56, 4.56, 4.56

Where to buy

Vehicle Applications

1969 Chevrolet Blazer
1970 Chevrolet Blazer
1970 – 1971 Chevrolet Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1971 – 1972 Chevrolet Blazer
1972 – 1973 Chevrolet Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 Chevrolet Blazer
1974 Chevrolet Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 Chevrolet C10
1975 – 1976 Chevrolet C10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 Chevrolet C10
1976 – 1977 Chevrolet C10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 Chevrolet C10
1977 – 1978 Chevrolet C10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 Chevrolet C10
1979 Chevrolet C10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 – 1980 Chevrolet C10
1980 – 1981 Chevrolet C10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1981 Chevrolet C10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1982 Chevrolet C10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1983 – 1986 Chevrolet C10
1963 – 1964 Chevrolet C10 Panel
1965 Chevrolet C10 Panel
1965 – 1966 Chevrolet C10 Panel
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 Chevrolet C10 Panel
1967 Chevrolet C10 Panel
1963 – 1964 Chevrolet C10 Pickup
1964 Chevrolet C10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
- 1963-1964 Models Require a 30 Spline Pinion Yoke
1965 Chevrolet C10 Pickup
1966 Chevrolet C10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 – 1967 Chevrolet C10 Pickup
1967 – 1968 Chevrolet C10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 Chevrolet C10 Pickup
1968 – 1969 Chevrolet C10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 Chevrolet C10 Pickup
1970 Chevrolet C10 Pickup
1971 Chevrolet C10 Pickup
1972 Chevrolet C10 Pickup
1972 – 1973 Chevrolet C10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 Chevrolet C10 Pickup
1973 – 1974 Chevrolet C10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 Chevrolet C10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 Chevrolet C10 Suburban
1967 – 1968 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 Chevrolet C10 Suburban
1969 Chevrolet C10 Suburban
1969 – 1970 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1971 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 Chevrolet C10 Suburban
1972 – 1973 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 Chevrolet C10 Suburban
1974 – 1975 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 Chevrolet C10 Suburban
1976 Chevrolet C10 Suburban
1977 Chevrolet C10 Suburban
1977 – 1978 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 Chevrolet C10 Suburban
1978 – 1979 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 Chevrolet C10 Suburban
1979 – 1980 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 Chevrolet C10 Suburban
1981 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1981 – 1982 Chevrolet C10 Suburban
1982 Chevrolet C10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1983 – 1986 Chevrolet C10 Suburban
1975 – 1981 Chevrolet C20
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 – 1974 Chevrolet C20 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 – 1981 Chevrolet C20 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 Chevrolet G10
1975 – 1976 Chevrolet G10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 Chevrolet G10
1976 – 1977 Chevrolet G10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 Chevrolet G10
1977 – 1978 Chevrolet G10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 Chevrolet G10
1979 Chevrolet G10
1980 Chevrolet G10
1980 – 1981 Chevrolet G10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1981 – 1987 Chevrolet G10
1964 Chevrolet G10 Van
1965 Chevrolet G10 Van
1965 – 1966 Chevrolet G10 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 Chevrolet G10 Van
1967 Chevrolet G10 Van
1968 Chevrolet G10 Van
1968 – 1969 Chevrolet G10 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 Chevrolet G10 Van
1969 – 1970 Chevrolet G10 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 Chevrolet G10 Van
1971 Chevrolet G10 Van
1972 Chevrolet G10 Van
1973 Chevrolet G10 Van
1974 Chevrolet G10 Van
1975 Chevrolet G20
1976 Chevrolet G20
1976 – 1977 Chevrolet G20
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 Chevrolet G20
1978 Chevrolet G20
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 Chevrolet G20
1979 – 1980 Chevrolet G20
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 Chevrolet G20
1981 Chevrolet G20
1967 Chevrolet G20 Van
1968 Chevrolet G20 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 – 1969 Chevrolet G20 Van
1969 – 1970 Chevrolet G20 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 – 1971 Chevrolet G20 Van
1971 – 1972 Chevrolet G20 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 Chevrolet G20 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 Chevrolet G20 Van
1973 – 1974 Chevrolet G20 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 Chevrolet G20 Van
1975 Chevrolet K10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 Chevrolet K10
1976 – 1977 Chevrolet K10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 Chevrolet K10
1977 – 1978 Chevrolet K10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 Chevrolet K10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 Chevrolet K10
1979 – 1980 Chevrolet K10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 Chevrolet K10
1981 Chevrolet K10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1982 – 1986 Chevrolet K10
1963 Chevrolet K10 Pickup
1964 Chevrolet K10 Pickup
1965 Chevrolet K10 Pickup
1966 Chevrolet K10 Pickup
1966 – 1967 Chevrolet K10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 Chevrolet K10 Pickup
1967 – 1968 Chevrolet K10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 Chevrolet K10 Pickup
1969 Chevrolet K10 Pickup
1969 – 1970 Chevrolet K10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 Chevrolet K10 Pickup
1971 Chevrolet K10 Pickup
1971 – 1972 Chevrolet K10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 Chevrolet K10 Pickup
1973 Chevrolet K10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 Chevrolet K10 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 Chevrolet K10 Suburban
1968 Chevrolet K10 Suburban
1968 – 1969 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 Chevrolet K10 Suburban
1969 – 1970 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 – 1971 Chevrolet K10 Suburban
1971 – 1972 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 Chevrolet K10 Suburban
1972 – 1973 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 Chevrolet K10 Suburban
1973 – 1974 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 Chevrolet K10 Suburban
1974 – 1975 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 Chevrolet K10 Suburban
1976 Chevrolet K10 Suburban
1976 – 1977 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 Chevrolet K10 Suburban
1978 – 1979 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 Chevrolet K10 Suburban
1979 – 1980 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 Chevrolet K10 Suburban
1981 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1982 Chevrolet K10 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1983 – 1986 Chevrolet K10 Suburban
1975 – 1981 Chevrolet K20
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 – 1974 Chevrolet K20 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 – 1981 Chevrolet K20 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 Chevrolet K5 Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 Chevrolet K5 Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 Chevrolet K5 Blazer
1977 – 1978 Chevrolet K5 Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 Chevrolet K5 Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 Chevrolet K5 Blazer
1979 – 1980 Chevrolet K5 Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 – 1981 Chevrolet K5 Blazer
1981 Chevrolet K5 Blazer
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1982 – 1986 Chevrolet K5 Blazer
1975 – 1980 Chevrolet P10
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1965 – 1967 Chevrolet P10 Series
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 – 1974 Chevrolet P10 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 – 1981 Chevrolet P20
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 – 1967 Chevrolet P20 Series
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 – 1974 Chevrolet P20 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1987 Chevrolet R10 Suburban
1963 – 1964 Chevrolet Suburban
1965 Chevrolet Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 Chevrolet Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1987 Chevrolet V10 Suburban
1975 GMC C15
1975 – 1976 GMC C15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 GMC C15
1976 – 1977 GMC C15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 GMC C15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 GMC C15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 GMC C15 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 GMC C15 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 GMC C15 Suburban
1977 – 1978 GMC C15 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 GMC C15 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 GMC C15/C1500 Pickup
1967 – 1968 GMC C15/C1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 GMC C15/C1500 Pickup
1969 GMC C15/C1500 Pickup
1970 GMC C15/C1500 Pickup
1970 – 1971 GMC C15/C1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1971 GMC C15/C1500 Pickup
1971 – 1972 GMC C15/C1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 GMC C15/C1500 Pickup
1972 – 1973 GMC C15/C1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 GMC C15/C1500 Pickup
1974 GMC C15/C1500 Pickup
1967 – 1968 GMC C15/C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 GMC C15/C1500 Suburban
1968 – 1969 GMC C15/C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 – 1970 GMC C15/C1500 Suburban
1970 GMC C15/C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1971 GMC C15/C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 GMC C15/C1500 Suburban
1972 – 1973 GMC C15/C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 GMC C15/C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 GMC C15/C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 GMC C1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 GMC C1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1981 GMC C1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1982 GMC C1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1983 – 1986 GMC C1500
1979 GMC C1500 Suburban
1979 – 1980 GMC C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 GMC C1500 Suburban
1980 – 1981 GMC C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1981 GMC C1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1982 – 1986 GMC C1500 Suburban
1975 – 1978 GMC C25
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 – 1978 GMC C25 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 – 1974 GMC C25/C2500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 – 1974 GMC C25/C2500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 – 1981 GMC C2500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 – 1981 GMC C2500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1963 – 1964 GMC G1000 Series
1965 GMC G1000 Series
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 GMC G1000 Series
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 GMC G15
1975 – 1976 GMC G15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 GMC G15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 GMC G15
1977 – 1978 GMC G15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 GMC G15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 GMC G15/G1500 Van
1967 – 1968 GMC G15/G1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 GMC G15/G1500 Van
1968 – 1969 GMC G15/G1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 GMC G15/G1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 GMC G15/G1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1971 GMC G15/G1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 GMC G15/G1500 Van
1972 – 1973 GMC G15/G1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 GMC G15/G1500 Van
1974 GMC G15/G1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 GMC G1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 GMC G1500
1980 – 1981 GMC G1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1981 GMC G1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1982 – 1987 GMC G1500
1975 GMC G25
1976 GMC G25
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 – 1977 GMC G25
1977 – 1978 GMC G25
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 GMC G25
1967 GMC G25/G2500 Van
1967 – 1968 GMC G25/G2500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 GMC G25/G2500 Van
1969 GMC G25/G2500 Van
1970 GMC G25/G2500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 – 1971 GMC G25/G2500 Van
1971 – 1972 GMC G25/G2500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1972 – 1973 GMC G25/G2500 Van
1973 – 1974 GMC G25/G2500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 GMC G25/G2500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 GMC G2500
1980 GMC G2500
1981 GMC G2500
1970 – 1981 GMC Jimmy
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 GMC K1000
1966 GMC K1000 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 GMC K15
1975 – 1976 GMC K15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1976 GMC K15
1977 GMC K15
1977 – 1978 GMC K15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1978 GMC K15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 GMC K15 Suburban
1976 GMC K15 Suburban
1976 – 1977 GMC K15 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1977 GMC K15 Suburban
1978 GMC K15 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 GMC K15/K1500 Pickup
1966 – 1967 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 GMC K15/K1500 Pickup
1967 – 1968 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1968 GMC K15/K1500 Pickup
1968 – 1969 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 GMC K15/K1500 Pickup
1969 – 1970 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 GMC K15/K1500 Pickup
1971 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1971 – 1972 GMC K15/K1500 Pickup
1972 – 1973 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 GMC K15/K1500 Pickup
1973 – 1974 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 GMC K15/K1500 Pickup
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 GMC K15/K1500 Suburban
1968 GMC K15/K1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1969 GMC K15/K1500 Suburban
1969 – 1970 GMC K15/K1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1970 GMC K15/K1500 Suburban
1971 GMC K15/K1500 Suburban
1972 GMC K15/K1500 Suburban
1972 – 1973 GMC K15/K1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1973 GMC K15/K1500 Suburban
1973 – 1974 GMC K15/K1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1974 GMC K15/K1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 GMC K1500
1980 GMC K1500
1980 – 1981 GMC K1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1981 – 1982 GMC K1500
1982 GMC K1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1983 – 1986 GMC K1500
1979 GMC K1500 Suburban
1979 – 1980 GMC K1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1980 GMC K1500 Suburban
1981 GMC K1500 Suburban
1982 GMC K1500 Suburban
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1983 – 1986 GMC K1500 Suburban
1975 – 1978 GMC P15
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 – 1974 GMC P15/P1500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 – 1980 GMC P1500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1975 – 1978 GMC P25
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1967 – 1974 GMC P25/P2500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1979 – 1981 GMC P2500
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1965 – 1966 GMC PB1000 Series
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 GMC PB15 Series
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1965 GMC PB1500 Series
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1966 GMC PB2500 Van
Application notes:
- For GM 8.875" (12 Bolt)
- 4.56 Ratio
- Thick Ring Gear
- Requires a 2.76 to 3.42 Ratio Carrier
1987 GMC R1500 Suburban
1963 – 1966 GMC Suburban
1987 GMC V1500 Suburban
1972 – 1974 Pontiac Bristol

Installation

Installation Instructions

⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov