Yukon Gear & Axle Minor Differential Install Kit for GM 12-Bolt Truck Axle (1963-1987 Chevy & GMC C10 / K10 / C1500 / K1500 / Suburban / Blazer) (MK GM12T)
Perform ring and pinion gear ratio changes or service your rear axle efficiently with the Yukon Gear & Axle Minor Installation Kit for GM 12-Bolt Truck axles (MK GM12T). Designed as a cost-effective solution for gear swaps where existing carrier and pinion bearings remain in good condition and can be reused, this minimum installation kit provides all the essential setup hardware needed to achieve precise gear alignment and a leak-free installation.
Yukon performs extensive application research to ensure every kit is packed with high-quality components for a seamless setup. The MK GM12T kit includes a complete carrier and pinion shim kit for establishing proper backlash and depth, a high-durability replacement pinion seal, a new crush sleeve, gear tooth marking compound, and an applicator brush. Upgrade or service the rear end on classic Chevrolet and GMC 1/2-ton trucks, Suburbans, vans, and full-size Blazers with confidence using genuine Yukon hardware.
Features
- Provides essential setup hardware for gear ratio changes on GM 12-Bolt Truck rear axles
- Economical alternative to full overhaul kits when existing differential bearings are being reused
- Includes a complete carrier and pinion shim pack for precise gear mesh, depth, and backlash setup
- Supplied with a high-grade replacement pinion seal to prevent gear oil leakage at the companion flange
- Includes a fresh crush sleeve, gear tooth marking compound, and an applicator brush
- Built with high-quality components to ensure smooth, quiet ring-and-pinion operation
- Direct-fit setup hardware for classic Chevrolet and GMC 1/2-ton trucks, SUVs, and vans
Specifications
- SKU: MK GM12T (MK GM12T / YUKMK GM12T)
- Proxy Number: 12044
- Manufacturer: Yukon Gear & Axle
- Differential Fitment: GM 12-Bolt Truck Rear Axle
- Kit Type: Minor / Minimum Differential Install Kit (Without Bearings)
- Components Included: Complete Shim Kit (Carrier & Pinion Shims), Pinion Seal, Crush Sleeve, Gear Marking Compound & Brush
- Shipping Weight: 1.18 lbs
- Shipping Dimensions: 12.00 in (L) x 13.00 in (W) x 3.00 in (D)
- UPC: 883584120445
- Prop 65 Warning: California Residents Prop 65 Applies
Fitment Notes
- Axle Compatibility: Fits GM 12-Bolt Truck Rear Differentials (12-Bolt Cover, 8.875" Ring Gear diameter).
- Exclusions: Does NOT fit GM 12-Bolt Passenger Car differential housings.
- Bearing Note: This is a Minor Install Kit and does NOT include carrier or pinion bearings. Reuse existing bearings or purchase new bearings separately.
- Service Scope: Provides setup shims and seals for setting up ring and pinion gear sets.
- Installation Note: Proper setting of gear pattern, depth, and backlash requires precision measurement tools and marking compound.
Fitment
1969 Chevrolet Blazer (GM 12-Bolt Truck)
1970 Chevrolet Blazer (GM 12-Bolt Truck)
1971 Chevrolet Blazer (GM 12-Bolt Truck)
1972 Chevrolet Blazer (GM 12-Bolt Truck)
1973 Chevrolet Blazer (GM 12-Bolt Truck)
1974 Chevrolet Blazer (GM 12-Bolt Truck)
1987 Chevrolet Blazer 4WD (GM 12-Bolt Truck)
1975 Chevrolet C10 RWD (GM 12-Bolt Truck)
1976 Chevrolet C10 RWD (GM 12-Bolt Truck)
1977 Chevrolet C10 RWD (GM 12-Bolt Truck)
1978 Chevrolet C10 RWD (GM 12-Bolt Truck)
1979 Chevrolet C10 RWD (GM 12-Bolt Truck)
1980 Chevrolet C10 RWD (GM 12-Bolt Truck)
1981 Chevrolet C10 RWD (GM 12-Bolt Truck)
1982 Chevrolet C10 RWD (GM 12-Bolt Truck)
1983 Chevrolet C10 RWD (GM 12-Bolt Truck)
1984 Chevrolet C10 RWD (GM 12-Bolt Truck)
1985 Chevrolet C10 RWD (GM 12-Bolt Truck)
1986 Chevrolet C10 RWD (GM 12-Bolt Truck)
1963 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1964 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1965 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1966 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1967 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1968 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1969 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1970 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1971 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1972 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1973 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1974 Chevrolet C10 Pickup (GM 12-Bolt Truck)
1975 Chevrolet G10 RWD (GM 12-Bolt Truck)
1976 Chevrolet G10 RWD (GM 12-Bolt Truck)
1977 Chevrolet G10 RWD (GM 12-Bolt Truck)
1978 Chevrolet G10 RWD (GM 12-Bolt Truck)
1979 Chevrolet G10 RWD (GM 12-Bolt Truck)
1980 Chevrolet G10 RWD (GM 12-Bolt Truck)
1981 Chevrolet G10 RWD (GM 12-Bolt Truck)
1967 Chevrolet G10 Van (GM 12-Bolt Truck)
1968 Chevrolet G10 Van (GM 12-Bolt Truck)
1969 Chevrolet G10 Van (GM 12-Bolt Truck)
1970 Chevrolet G10 Van (GM 12-Bolt Truck)
1971 Chevrolet G10 Van (GM 12-Bolt Truck)
1972 Chevrolet G10 Van (GM 12-Bolt Truck)
1973 Chevrolet G10 Van (GM 12-Bolt Truck)
1974 Chevrolet G10 Van (GM 12-Bolt Truck)
1975 Chevrolet K10 4WD (GM 12-Bolt Truck)
1976 Chevrolet K10 4WD (GM 12-Bolt Truck)
1977 Chevrolet K10 4WD (GM 12-Bolt Truck)
1978 Chevrolet K10 4WD (GM 12-Bolt Truck)
1979 Chevrolet K10 4WD (GM 12-Bolt Truck)
1980 Chevrolet K10 4WD (GM 12-Bolt Truck)
1981 Chevrolet K10 4WD (GM 12-Bolt Truck)
1982 Chevrolet K10 4WD (GM 12-Bolt Truck)
1983 Chevrolet K10 4WD (GM 12-Bolt Truck)
1984 Chevrolet K10 4WD (GM 12-Bolt Truck)
1985 Chevrolet K10 4WD (GM 12-Bolt Truck)
1986 Chevrolet K10 4WD (GM 12-Bolt Truck)
1963 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1964 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1965 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1966 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1967 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1968 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1969 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1970 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1971 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1972 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1973 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1974 Chevrolet K10 Pickup (GM 12-Bolt Truck)
1967 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1968 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1969 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1970 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1971 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1972 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1973 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1974 Chevrolet K10 Suburban (GM 12-Bolt Truck)
1975 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1976 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1977 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1978 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1979 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1980 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1981 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1982 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1983 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1984 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1985 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1986 Chevrolet K10 Suburban 4WD (GM 12-Bolt Truck)
1975 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1976 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1977 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1978 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1979 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1980 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1981 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1982 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1983 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1984 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1985 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1986 Chevrolet K5 Blazer 4WD (GM 12-Bolt Truck)
1987 Chevrolet R10 RWD (GM 12-Bolt Truck)
1963 Chevrolet Suburban (GM 12-Bolt Truck)
1964 Chevrolet Suburban (GM 12-Bolt Truck)
1965 Chevrolet Suburban (GM 12-Bolt Truck)
1966 Chevrolet Suburban (GM 12-Bolt Truck)
1987 Chevrolet V10 4WD (GM 12-Bolt Truck)
1987 Chevrolet V10 Suburban 4WD (GM 12-Bolt Truck)
1975 GMC C15 RWD (GM 12-Bolt Truck)
1976 GMC C15 RWD (GM 12-Bolt Truck)
1977 GMC C15 RWD (GM 12-Bolt Truck)
1978 GMC C15 RWD (GM 12-Bolt Truck)
1975 GMC C15 Suburban RWD (GM 12-Bolt Truck)
1976 GMC C15 Suburban RWD (GM 12-Bolt Truck)
1977 GMC C15 Suburban RWD (GM 12-Bolt Truck)
1978 GMC C15 Suburban RWD (GM 12-Bolt Truck)
1967 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1968 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1969 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1970 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1971 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1972 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1973 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1974 GMC C15/C1500 Pickup (GM 12-Bolt Truck)
1967 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1968 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1969 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1970 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1971 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1972 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1973 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1974 GMC C15/C1500 Suburban (GM 12-Bolt Truck)
1979 GMC C1500 RWD (GM 12-Bolt Truck)
1980 GMC C1500 RWD (GM 12-Bolt Truck)
1981 GMC C1500 RWD (GM 12-Bolt Truck)
1982 GMC C1500 RWD (GM 12-Bolt Truck)
1983 GMC C1500 RWD (GM 12-Bolt Truck)
1984 GMC C1500 RWD (GM 12-Bolt Truck)
1985 GMC C1500 RWD (GM 12-Bolt Truck)
1986 GMC C1500 RWD (GM 12-Bolt Truck)
1979 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1980 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1981 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1982 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1983 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1984 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1985 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1986 GMC C1500 Suburban RWD (GM 12-Bolt Truck)
1975 GMC G15 RWD (GM 12-Bolt Truck)
1976 GMC G15 RWD (GM 12-Bolt Truck)
1977 GMC G15 RWD (GM 12-Bolt Truck)
1978 GMC G15 RWD (GM 12-Bolt Truck)
1967 GMC G15/G1500 Van (GM 12-Bolt Truck)
1968 GMC G15/G1500 Van (GM 12-Bolt Truck)
1969 GMC G15/G1500 Van (GM 12-Bolt Truck)
1970 GMC G15/G1500 Van (GM 12-Bolt Truck)
1971 GMC G15/G1500 Van (GM 12-Bolt Truck)
1972 GMC G15/G1500 Van (GM 12-Bolt Truck)
1973 GMC G15/G1500 Van (GM 12-Bolt Truck)
1974 GMC G15/G1500 Van (GM 12-Bolt Truck)
1964 GMC G1500 (GM 12-Bolt Truck)
1965 GMC G1500 (GM 12-Bolt Truck)
1966 GMC G1500 (GM 12-Bolt Truck)
1979 GMC G1500 RWD (GM 12-Bolt Truck)
1980 GMC G1500 RWD (GM 12-Bolt Truck)
1981 GMC G1500 RWD (GM 12-Bolt Truck)
1982 GMC G1500 RWD (GM 12-Bolt Truck)
1983 GMC G1500 RWD (GM 12-Bolt Truck)
1984 GMC G1500 RWD (GM 12-Bolt Truck)
1985 GMC G1500 RWD (GM 12-Bolt Truck)
1986 GMC G1500 RWD (GM 12-Bolt Truck)
1987 GMC G1500 RWD (GM 12-Bolt Truck)
1975 GMC G25 RWD (GM 12-Bolt Truck)
1976 GMC G25 RWD (GM 12-Bolt Truck)
1977 GMC G25 RWD (GM 12-Bolt Truck)
1978 GMC G25 RWD (GM 12-Bolt Truck)
1967 GMC G25/G2500 Van (GM 12-Bolt Truck)
1968 GMC G25/G2500 Van (GM 12-Bolt Truck)
1969 GMC G25/G2500 Van (GM 12-Bolt Truck)
1970 GMC G25/G2500 Van (GM 12-Bolt Truck)
1971 GMC G25/G2500 Van (GM 12-Bolt Truck)
1972 GMC G25/G2500 Van (GM 12-Bolt Truck)
1973 GMC G25/G2500 Van (GM 12-Bolt Truck)
1974 GMC G25/G2500 Van (GM 12-Bolt Truck)
1979 GMC G2500 RWD (GM 12-Bolt Truck)
1980 GMC G2500 RWD (GM 12-Bolt Truck)
1981 GMC G2500 RWD (GM 12-Bolt Truck)
1975 GMC K15 4WD (GM 12-Bolt Truck)
1976 GMC K15 4WD (GM 12-Bolt Truck)
1977 GMC K15 4WD (GM 12-Bolt Truck)
1978 GMC K15 4WD (GM 12-Bolt Truck)
1975 GMC K15 Suburban 4WD (GM 12-Bolt Truck)
1976 GMC K15 Suburban 4WD (GM 12-Bolt Truck)
1977 GMC K15 Suburban 4WD (GM 12-Bolt Truck)
1978 GMC K15 Suburban 4WD (GM 12-Bolt Truck)
1966 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1967 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1968 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1969 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1970 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1971 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1972 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1973 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1974 GMC K15/K1500 Pickup (GM 12-Bolt Truck)
1967 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1968 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1969 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1970 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1971 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1972 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1973 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1974 GMC K15/K1500 Suburban (GM 12-Bolt Truck)
1979 GMC K1500 4WD (GM 12-Bolt Truck)
1980 GMC K1500 4WD (GM 12-Bolt Truck)
1981 GMC K1500 4WD (GM 12-Bolt Truck)
1982 GMC K1500 4WD (GM 12-Bolt Truck)
1983 GMC K1500 4WD (GM 12-Bolt Truck)
1984 GMC K1500 4WD (GM 12-Bolt Truck)
1985 GMC K1500 4WD (GM 12-Bolt Truck)
1986 GMC K1500 4WD (GM 12-Bolt Truck)
1979 GMC K1500 Suburban 4WD (GM 12-Bolt Truck)
1980 GMC K1500 Suburban 4WD (GM 12-Bolt Truck)
1981 GMC K1500 Suburban 4WD (GM 12-Bolt Truck)
1982 GMC K1500 Suburban 4WD (GM 12-Bolt Truck)
1983 GMC K1500 Suburban 4WD (GM 12-Bolt Truck)
1984 GMC K1500 Suburban 4WD (GM 12-Bolt Truck)
1985 GMC K1500 Suburban 4WD (GM 12-Bolt Truck)
1987 GMC R1500 RWD (GM 12-Bolt Truck)
1987 GMC R1500 Suburban RWD (GM 12-Bolt Truck)
1963 GMC Suburban (GM 12-Bolt Truck)
1964 GMC Suburban (GM 12-Bolt Truck)
1965 GMC Suburban (GM 12-Bolt Truck)
1966 GMC Suburban (GM 12-Bolt Truck)
1987 GMC V1500 4WD (GM 12-Bolt Truck)
1987 GMC V1500 Suburban 4WD (GM 12-Bolt Truck)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
