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Yukon Gear Master Overhaul Kit for GM 12-Bolt Truck Differential is the exact Yukon Gear & Axle differential overhaul kits identified by manufacturer part number YK GM12T. Match the part number, vehicle, axle housing, differential, spline count, gear ratio, carrier break, position, dimensions, and intended use before ordering.
Key Features
- Whether you are restoring a classic Chevrolet or GMC work truck or rebuilding a heavily used axle from decades of service, the YK GM12T includes every component needed for a professional-grade overhaul.
- The YK GM12T includes genuine Timken carrier bearings, pinion bearings, and all bearing races.
- The YK GM12T includes a new crush sleeve, pinion nut, and ring gear bolts for a full hardware refresh.
- Extract the pinion shaft and note the original shim stack thickness for reference.
- Yukon Gear designed the YK GM12T complete rebuild kit around premium Timken bearings and precision shims so the finished assembly delivers the reliability these legendary differentials are known for.
- A: The YK GM12T is for the GM 12-bolt truck rear axle found in Chevrolet and GMC light-duty trucks and SUVs.
Fitment
Verified catalog applications: 1963-1966 Chevrolet Suburban, 1963-1966 GMC Suburban, 1963-1974 Chevrolet C10 Pickup, 1963-1974 Chevrolet K10 Pickup, 1964-1966 GMC G1500, 1966-1974 GMC K15/K1500 Pickup, 1967-1974 Chevrolet G10 Van, 1967-1974 GMC C15/C1500 Pickup, 1967-1974 GMC C15/C1500 Suburban, 1967-1974 GMC G15/G1500 Van, 1967-1974 GMC G25/G2500 Van, 1967-1974 GMC K15/K1500 Suburban, 1967-1986 Chevrolet K10 Suburban, 1969-1974 Chevrolet Blazer, 1975-1978 GMC C15, 1975-1978 GMC C15 Suburban, 1975-1978 GMC G15, 1975-1978 GMC G25, 1975-1978 GMC K15, 1975-1978 GMC K15 Suburban, 1975-1981 Chevrolet G10, 1975-1986 Chevrolet C10, 1975-1986 Chevrolet K10, 1975-1986 Chevrolet K5 Blazer, 1979-1981 GMC G2500, 1979-1985 GMC K1500 Suburban, 1979-1986 GMC C1500, 1979-1986 GMC C1500 Suburban, 1979-1986 GMC K1500, 1979-1987 GMC G1500, 1987 Chevrolet Blazer, 1987 Chevrolet R10, 1987 Chevrolet V10, 1987 Chevrolet V10 Suburban, 1987 GMC R1500, 1987 GMC R1500 Suburban, 1987 GMC V1500, 1987 GMC V1500 Suburban. Confirm axle housing, differential, spline count, gear ratio, carrier break, position, and manufacturer exclusions for the exact vehicle before ordering.
| Years | Make | Model |
|---|---|---|
| 1963-1966 | Chevrolet | Suburban |
| 1963-1966 | GMC | Suburban |
| 1963-1974 | Chevrolet | C10 Pickup |
| 1963-1974 | Chevrolet | K10 Pickup |
| 1964-1966 | GMC | G1500 |
| 1966-1974 | GMC | K15/K1500 Pickup |
| 1967-1974 | Chevrolet | G10 Van |
| 1967-1974 | GMC | C15/C1500 Pickup |
| 1967-1974 | GMC | C15/C1500 Suburban |
| 1967-1974 | GMC | G15/G1500 Van |
| 1967-1974 | GMC | G25/G2500 Van |
| 1967-1974 | GMC | K15/K1500 Suburban |
| 1967-1986 | Chevrolet | K10 Suburban |
| 1969-1974 | Chevrolet | Blazer |
| 1975-1978 | GMC | C15 |
| 1975-1978 | GMC | C15 Suburban |
| 1975-1978 | GMC | G15 |
| 1975-1978 | GMC | G25 |
| 1975-1978 | GMC | K15 |
| 1975-1978 | GMC | K15 Suburban |
| 1975-1981 | Chevrolet | G10 |
| 1975-1986 | Chevrolet | C10 |
| 1975-1986 | Chevrolet | K10 |
| 1975-1986 | Chevrolet | K5 Blazer |
| 1979-1981 | GMC | G2500 |
| 1979-1985 | GMC | K1500 Suburban |
| 1979-1986 | GMC | C1500 |
| 1979-1986 | GMC | C1500 Suburban |
| 1979-1986 | GMC | K1500 |
| 1979-1987 | GMC | G1500 |
| 1987 | Chevrolet | Blazer |
| 1987 | Chevrolet | R10 |
| 1987 | Chevrolet | V10 |
| 1987 | Chevrolet | V10 Suburban |
| 1987 | GMC | R1500 |
| 1987 | GMC | R1500 Suburban |
| 1987 | GMC | V1500 |
| 1987 | GMC | V1500 Suburban |
Specifications
| Brand | Yukon Gear & Axle |
|---|---|
| Manufacturer Part Number | YK GM12T |
| SKU | YUKYK GM12T |
| UPC | 883584140689 |
| Product Type | Differential Overhaul Kits |
| Fitment Type | Vehicle Specific |
| Catalog Status | Manufacturer Catalog Verified |
| Condition | New |
What's Included
One new Yukon Gear & Axle differential overhaul kits identified by manufacturer part number YK GM12T, plus only the bearings, seals, shims, fasteners, and hardware expressly supplied for this exact part number.
About Yukon Gear & Axle
Yukon Gear & Axle develops ring and pinion sets, axles, differentials, bearings, seals, installation kits, and drivetrain service components for street, towing, off-road, and performance applications.
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Frequently Asked Questions
Will Yukon Gear & Axle YK GM12T fit my vehicle?
Verified catalog applications: 1963-1966 Chevrolet Suburban, 1963-1966 GMC Suburban, 1963-1974 Chevrolet C10 Pickup, 1963-1974 Chevrolet K10 Pickup, 1964-1966 GMC G1500, 1966-1974 GMC K15/K1500 Pickup, 1967-1974 Chevrolet G10 Van, 1967-1974 GMC C15/C1500 Pickup, 1967-1974 GMC C15/C1500 Suburban, 1967-1974 GMC G15/G1500 Van, 1967-1974 GMC G25/G2500 Van, 1967-1974 GMC K15/K1500 Suburban, 1967-1986 Chevrolet K10 Suburban, 1969-1974 Chevrolet Blazer, 1975-1978 GMC C15, 1975-1978 GMC C15 Suburban, 1975-1978 GMC G15, 1975-1978 GMC G25, 1975-1978 GMC K15, 1975-1978 GMC K15 Suburban, 1975-1981 Chevrolet G10, 1975-1986 Chevrolet C10, 1975-1986 Chevrolet K10, 1975-1986 Chevrolet K5 Blazer, 1979-1981 GMC G2500, 1979-1985 GMC K1500 Suburban, 1979-1986 GMC C1500, 1979-1986 GMC C1500 Suburban, 1979-1986 GMC K1500, 1979-1987 GMC G1500, 1987 Chevrolet Blazer, 1987 Chevrolet R10, 1987 Chevrolet V10, 1987 Chevrolet V10 Suburban, 1987 GMC R1500, 1987 GMC R1500 Suburban, 1987 GMC V1500, 1987 GMC V1500 Suburban. Confirm axle housing, differential, spline count, gear ratio, carrier break, position, and manufacturer exclusions for the exact vehicle before ordering.
What should I verify before ordering?
Verify the exact part number, vehicle, axle housing, differential, spline count, gear ratio, carrier break, bearing dimensions, position, intended use, and manufacturer exclusions.
What is included?
The package contains only the Yukon Gear & Axle components and hardware specified for part number YK GM12T. Related bearings, seals, fluids, tools, and service parts are sold separately unless expressly listed.
Installation
Follow Yukon Gear & Axle's current instructions for part number YK GM12T. Confirm all measurements and clearances, inspect mating components, set bearing preload and gear backlash where applicable, verify contact pattern, use specified lubricants and torque values, and have precision differential work completed by a qualified drivetrain technician.
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