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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Yukon Gear & Axle
Yukon Gear Master Overhaul Kit for GM 12 Bolt Truck Differential 1963-1987 (YK GM12T)
$318.89
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits select 1963-1987 Chevrolet and GMC C10, K10, K5 Blazer, Suburban, and G-Series vans with the GM 12-bolt truck differential.
The Yukon Gear Master Overhaul Kit is a comprehensive solution designed to provide every component required for a complete differential rebuild or gear installation. This kit is built around premium Timken bearings and races, ensuring the tight tolerances and long-term durability required for truck applications. By including all necessary seals, shims, and hardware in a single package, Yukon eliminates the guesswork and downtime of sourcing individual components.
- Premium Timken carrier bearings and races
- Timken pinion bearings and races
- Pinion seal and pinion nut
- Complete shim kit for precise gear pattern adjustment
- High-strength ring gear bolts
- Crush sleeve and differential gasket
- Thread locker and marking compound with applicator brush
- Manufacturer Part Number: YK GM12T
📘 Guides & Manuals
🔧 Fitment & Compatibility
| 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 | Chevrolet | K10 | Scottsdale |
| 1975-1986 | Chevrolet | K10 | Silverado |
| 1963-1974 | Chevrolet | K10 Pickup | Base |
| 1967-1974 | Chevrolet | K10 Suburban | Base |
| 1981-1986 | Chevrolet | K10 Suburban | Custom |
| 1975-1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1975-1980,1982,1984-1986 | Chevrolet | K10 Suburban | Scottsdale |
| 1975-1977,1979-1980,1982-1983,1985-1986 | Chevrolet | K10 Suburban | Silverado |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1975-1980 | Chevrolet | K5 Blazer | Cheyenne |
| 1981-1986 | Chevrolet | K5 Blazer | Custom |
| 1975,1977-1980 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1984 | Chevrolet | K5 Blazer | Scottsdale |
| 1978,1980-1986 | Chevrolet | K5 Blazer | Silverado |
| 1987 | Chevrolet | R10 | Custom Deluxe |
| 1987 | Chevrolet | R10 | Scottsdale |
| 1987 | Chevrolet | R10 | Silverado |
| 1963-1966 | Chevrolet | Suburban | Base |
| 1987 | Chevrolet | V10 | Custom Deluxe |
| 1987 | Chevrolet | V10 | Scottsdale |
| 1987 | Chevrolet | V10 | Silverado |
| 1987 | Chevrolet | V10 Suburban | Custom Deluxe |
| 1987 | Chevrolet | V10 Suburban | Scottsdale |
| 1987 | Chevrolet | V10 Suburban | Silverado |
| 1975-1978 | GMC | C15 | Base |
| 1977-1978 | GMC | C15 | Heavy Half |
| 1975-1978 | GMC | C15 | High Sierra |
| 1977 | GMC | C15 | Indy Hauler |
| 1975-1978 | GMC | C15 | Sierra Classic |
| 1975-1978 | GMC | C15 | Sierra Grande |
| 1978 | GMC | C15 | Street Coupe |
| 1975-1978 | GMC | C15 Suburban | Base |
| 1975-1978 | GMC | C15 Suburban | High Sierra |
| 1975-1978 | GMC | C15 Suburban | Sierra Classic |
| 1975-1978 | GMC | C15 Suburban | Sierra Grande |
| 1967-1974 | GMC | C15/C1500 Pickup | Base |
| 1967-1974 | GMC | C15/C1500 Suburban | Base |
| 1979-1986 | GMC | C1500 | Base |
| 1979-1980 | GMC | C1500 | Heavy Half |
| 1979-1986 | GMC | C1500 | High Sierra |
| 1979-1986 | GMC | C1500 | Sierra Classic |
| 1979-1982 | GMC | C1500 | Sierra Grande |
| 1979-1982 | GMC | C1500 | Street Coupe |
| 1979-1986 | GMC | C1500 Suburban | Base |
| 1979-1986 | GMC | C1500 Suburban | High Sierra |
| 1979-1986 | GMC | C1500 Suburban | Sierra Classic |
| 1979-1982 | GMC | C1500 Suburban | Sierra Grande |
| 1975-1978 | GMC | G15 | Rally |
| 1975-1978 | GMC | G15 | Rally STX |
| 1975-1978 | GMC | G15 | Vandura |
| 1967,1970-1971 | GMC | G15/G1500 Van | Base |
| 1968-1969,1971-1974 | GMC | G15/G1500 Van | Rally |
| 1968-1974 | GMC | G15/G1500 Van | Vandura |
| 1964-1966 | GMC | G1500 | Base |
| 1979-1987 | GMC | G1500 | Rally |
| 1983-1984 | GMC | G1500 | Rally Custom |
| 1979-1987 | GMC | G1500 | Rally STX |
| 1979-1987 | GMC | G1500 | Vandura |
| 1975-1978 | GMC | G25 | Rally |
| 1975-1978 | GMC | G25 | Rally STX |
| 1975-1978 | GMC | G25 | Vandura |
| 1967,1970-1972 | GMC | G25/G2500 Van | Base |
| 1968-1969,1971-1974 | GMC | G25/G2500 Van | Rally |
| 1968-1974 | GMC | G25/G2500 Van | Vandura |
| 1979-1981 | GMC | G2500 | Rally |
| 1979-1981 | GMC | G2500 | Rally STX |
| 1979-1981 | GMC | G2500 | Vandura |
| 1975-1978 | GMC | K15 | Base |
| 1975-1978 | GMC | K15 | High Sierra |
| 1977 | GMC | K15 | Indy Hauler |
| 1975-1978 | GMC | K15 | Sierra Classic |
| 1975-1978 | GMC | K15 | Sierra Grande |
| 1975-1978 | GMC | K15 Suburban | Base |
| 1975-1978 | GMC | K15 Suburban | High Sierra |
| 1975-1978 | GMC | K15 Suburban | Sierra Classic |
| 1975-1978 | GMC | K15 Suburban | Sierra Grande |
| 1966-1974 | GMC | K15/K1500 Pickup | Base |
| 1967-1974 | GMC | K15/K1500 Suburban | Base |
| 1979-1986 | GMC | K1500 | Base |
| 1979-1986 | GMC | K1500 | High Sierra |
| 1979-1986 | GMC | K1500 | Sierra Classic |
| 1979-1982 | GMC | K1500 | Sierra Grande |
| 1979-1985 | GMC | K1500 Suburban | Base |
| 1979-1985 | GMC | K1500 Suburban | High Sierra |
| 1979-1985 | GMC | K1500 Suburban | Sierra Classic |
| 1979-1982 | GMC | K1500 Suburban | Sierra Grande |
| 1987 | GMC | R1500 | Base |
| 1987 | GMC | R1500 | High Sierra |
| 1987 | GMC | R1500 | Sierra Classic |
| 1987 | GMC | R1500 Suburban | Base |
| 1987 | GMC | R1500 Suburban | High Sierra |
| 1987 | GMC | R1500 Suburban | Sierra Classic |
| 1963-1966 | GMC | Suburban | Base |
| 1987 | GMC | V1500 | Base |
| 1987 | GMC | V1500 | High Sierra |
| 1987 | GMC | V1500 | Sierra Classic |
| 1987 | GMC | V1500 Suburban | Base |
| 1987 | GMC | V1500 Suburban | High Sierra |
| 1987 | GMC | V1500 Suburban | Sierra Classic |
Choose your Location
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
Yukon Gear Master Overhaul Kit for GM 12 Bolt Truck Differential 1963-1987 (YK GM12T)
$318.89
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
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$318.89
$318.89
$318.89
Fits select 1963-1987 Chevrolet and GMC C10, K10, K5 Blazer, Suburban, and G-Series vans with the GM 12-bolt truck differential.
The Yukon Gear Master Overhaul Kit is a comprehensive solution designed to provide every component required for a complete differential rebuild or gear installation. This kit is built around premium Timken bearings and races, ensuring the tight tolerances and long-term durability required for truck applications. By including all necessary seals, shims, and hardware in a single package, Yukon eliminates the guesswork and downtime of sourcing individual components.
- Premium Timken carrier bearings and races
- Timken pinion bearings and races
- Pinion seal and pinion nut
- Complete shim kit for precise gear pattern adjustment
- High-strength ring gear bolts
- Crush sleeve and differential gasket
- Thread locker and marking compound with applicator brush
- Manufacturer Part Number: YK GM12T
📘 Guides & Manuals
🔧 Fitment & Compatibility
| 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 | Chevrolet | K10 | Scottsdale |
| 1975-1986 | Chevrolet | K10 | Silverado |
| 1963-1974 | Chevrolet | K10 Pickup | Base |
| 1967-1974 | Chevrolet | K10 Suburban | Base |
| 1981-1986 | Chevrolet | K10 Suburban | Custom |
| 1975-1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1975-1980,1982,1984-1986 | Chevrolet | K10 Suburban | Scottsdale |
| 1975-1977,1979-1980,1982-1983,1985-1986 | Chevrolet | K10 Suburban | Silverado |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1975-1980 | Chevrolet | K5 Blazer | Cheyenne |
| 1981-1986 | Chevrolet | K5 Blazer | Custom |
| 1975,1977-1980 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1984 | Chevrolet | K5 Blazer | Scottsdale |
| 1978,1980-1986 | Chevrolet | K5 Blazer | Silverado |
| 1987 | Chevrolet | R10 | Custom Deluxe |
| 1987 | Chevrolet | R10 | Scottsdale |
| 1987 | Chevrolet | R10 | Silverado |
| 1963-1966 | Chevrolet | Suburban | Base |
| 1987 | Chevrolet | V10 | Custom Deluxe |
| 1987 | Chevrolet | V10 | Scottsdale |
| 1987 | Chevrolet | V10 | Silverado |
| 1987 | Chevrolet | V10 Suburban | Custom Deluxe |
| 1987 | Chevrolet | V10 Suburban | Scottsdale |
| 1987 | Chevrolet | V10 Suburban | Silverado |
| 1975-1978 | GMC | C15 | Base |
| 1977-1978 | GMC | C15 | Heavy Half |
| 1975-1978 | GMC | C15 | High Sierra |
| 1977 | GMC | C15 | Indy Hauler |
| 1975-1978 | GMC | C15 | Sierra Classic |
| 1975-1978 | GMC | C15 | Sierra Grande |
| 1978 | GMC | C15 | Street Coupe |
| 1975-1978 | GMC | C15 Suburban | Base |
| 1975-1978 | GMC | C15 Suburban | High Sierra |
| 1975-1978 | GMC | C15 Suburban | Sierra Classic |
| 1975-1978 | GMC | C15 Suburban | Sierra Grande |
| 1967-1974 | GMC | C15/C1500 Pickup | Base |
| 1967-1974 | GMC | C15/C1500 Suburban | Base |
| 1979-1986 | GMC | C1500 | Base |
| 1979-1980 | GMC | C1500 | Heavy Half |
| 1979-1986 | GMC | C1500 | High Sierra |
| 1979-1986 | GMC | C1500 | Sierra Classic |
| 1979-1982 | GMC | C1500 | Sierra Grande |
| 1979-1982 | GMC | C1500 | Street Coupe |
| 1979-1986 | GMC | C1500 Suburban | Base |
| 1979-1986 | GMC | C1500 Suburban | High Sierra |
| 1979-1986 | GMC | C1500 Suburban | Sierra Classic |
| 1979-1982 | GMC | C1500 Suburban | Sierra Grande |
| 1975-1978 | GMC | G15 | Rally |
| 1975-1978 | GMC | G15 | Rally STX |
| 1975-1978 | GMC | G15 | Vandura |
| 1967,1970-1971 | GMC | G15/G1500 Van | Base |
| 1968-1969,1971-1974 | GMC | G15/G1500 Van | Rally |
| 1968-1974 | GMC | G15/G1500 Van | Vandura |
| 1964-1966 | GMC | G1500 | Base |
| 1979-1987 | GMC | G1500 | Rally |
| 1983-1984 | GMC | G1500 | Rally Custom |
| 1979-1987 | GMC | G1500 | Rally STX |
| 1979-1987 | GMC | G1500 | Vandura |
| 1975-1978 | GMC | G25 | Rally |
| 1975-1978 | GMC | G25 | Rally STX |
| 1975-1978 | GMC | G25 | Vandura |
| 1967,1970-1972 | GMC | G25/G2500 Van | Base |
| 1968-1969,1971-1974 | GMC | G25/G2500 Van | Rally |
| 1968-1974 | GMC | G25/G2500 Van | Vandura |
| 1979-1981 | GMC | G2500 | Rally |
| 1979-1981 | GMC | G2500 | Rally STX |
| 1979-1981 | GMC | G2500 | Vandura |
| 1975-1978 | GMC | K15 | Base |
| 1975-1978 | GMC | K15 | High Sierra |
| 1977 | GMC | K15 | Indy Hauler |
| 1975-1978 | GMC | K15 | Sierra Classic |
| 1975-1978 | GMC | K15 | Sierra Grande |
| 1975-1978 | GMC | K15 Suburban | Base |
| 1975-1978 | GMC | K15 Suburban | High Sierra |
| 1975-1978 | GMC | K15 Suburban | Sierra Classic |
| 1975-1978 | GMC | K15 Suburban | Sierra Grande |
| 1966-1974 | GMC | K15/K1500 Pickup | Base |
| 1967-1974 | GMC | K15/K1500 Suburban | Base |
| 1979-1986 | GMC | K1500 | Base |
| 1979-1986 | GMC | K1500 | High Sierra |
| 1979-1986 | GMC | K1500 | Sierra Classic |
| 1979-1982 | GMC | K1500 | Sierra Grande |
| 1979-1985 | GMC | K1500 Suburban | Base |
| 1979-1985 | GMC | K1500 Suburban | High Sierra |
| 1979-1985 | GMC | K1500 Suburban | Sierra Classic |
| 1979-1982 | GMC | K1500 Suburban | Sierra Grande |
| 1987 | GMC | R1500 | Base |
| 1987 | GMC | R1500 | High Sierra |
| 1987 | GMC | R1500 | Sierra Classic |
| 1987 | GMC | R1500 Suburban | Base |
| 1987 | GMC | R1500 Suburban | High Sierra |
| 1987 | GMC | R1500 Suburban | Sierra Classic |
| 1963-1966 | GMC | Suburban | Base |
| 1987 | GMC | V1500 | Base |
| 1987 | GMC | V1500 | High Sierra |
| 1987 | GMC | V1500 | Sierra Classic |
| 1987 | GMC | V1500 Suburban | Base |
| 1987 | GMC | V1500 Suburban | High Sierra |
| 1987 | GMC | V1500 Suburban | Sierra Classic |
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