USA standard Ring & Pinion gear set for GM 12 bolt truck in a 4.56 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.

Fitment
| Year | Make | Model | Driveline |
|---|---|---|---|
| 1963-1974 | Chevrolet | C10 Pickup | N/A |
| 1967-1974 | Chevrolet | G10 Van | N/A |
| 1963-1974 | Chevrolet | K10 Pickup | N/A |
| 1963-1966 | Chevrolet | Suburban | N/A |
| 1969-1974 , 1987 | Chevrolet | Blazer | N/A |
| 1975-1986 | Chevrolet | K5 Blazer | N/A |
| 1975-1986 | Chevrolet | C10 | N/A |
| 1975-1981 | Chevrolet | G10 | N/A |
| 1975-1986 | Chevrolet | K10 | N/A |
| 1967-1986 | Chevrolet | K10 Suburban | N/A |
| 1987 | Chevrolet | R10 | N/A |
| 1987 | Chevrolet | V10 | N/A |
| 1987-1988 | Chevrolet | V10 Suburban | N/A |
| 1967-1974 | GMC | C15/C1500 Pickup | N/A |
| 1967-1974 | GMC | C15/C1500 Suburban | N/A |
| 1967-1974 | GMC | G15/G1500 Van | N/A |
| 1967-1974 | GMC | G25/G2500 Van | N/A |
| 1966-1974 | GMC | K15/K1500 Pickup | N/A |
| 1967-1974 | GMC | K15/K1500 Suburban | N/A |
| 1963-1966 | GMC | Suburban | N/A |
| 1979-1986 | GMC | C1500 | N/A |
| 1979-1986 | GMC | C1500 Suburban | N/A |
| 1979-1986 | GMC | K1500 | N/A |
| 1979-1985 | GMC | K1500 Suburban | N/A |
| 1987 | GMC | R1500 Suburban | N/A |
| 1987 | GMC | V1500 Suburban | N/A |
| 1975-1978 | GMC | C15 | N/A |
| 1975-1978 | GMC | C15 Suburban | N/A |
| 1975-1978 | GMC | G15 | N/A |
| 1964-1966 , 1979-1987 | GMC | G1500 | N/A |
| 1975-1978 | GMC | G25 | N/A |
| 1979-1981 | GMC | G2500 | N/A |
| 1975-1978 | GMC | K15 | N/A |
| 1975-1978 | GMC | K15 Suburban | N/A |
| 1987 | GMC | R1500 | N/A |
| 1987 | GMC | V1500 | N/A |
Features
- Fits GM 12 bolt truck
- 8.875" ring gear diameter
- 30 spline pinion
- 12 ring gear bolts
- 4.56 ratio
Quick Specs
- 16" L x 12" W x 6" H
- Part Number : ZG GM12T-456
USA Standard Ring & Pinion gear set for GM 12 bolt truck in a 4.56 ratio
- SKU : FDHDZG GM12T-456
- Part Number : ZG GM12T-456
$347.89
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