Yukon Gear Master Overhaul Kit For GM 8.5in Diff w/ Aftermarket Positraction
Technical Data
The GM 8.5 Positraction Master Overhaul Kit from Yukon Gear is the ultimate solution for GM car and truck owners who need a complete rebuild for their aftermarket positraction differential. Designed for GM 8.5" differentials with aftermarket positraction units, this kit includes premium components to restore performance, reliability, and confidence in your drivetrain.
Built with high‑quality bearings, seals, and shims, Yukon’s overhaul kit ensures proper fitment and long‑lasting durability. Whether you’re restoring a muscle car, upgrading a truck, or daily driving, this kit provides the strength and dependability you need.
With Yukon’s reputation for precision engineering and dependable performance, the GM 8.5 Positraction Master Overhaul Kit is the trusted choice for enthusiasts and professionals alike.
Features and Benefits
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Complete Overhaul Solution – Includes everything needed to rebuild your GM 8.5" aftermarket positraction differential.
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Premium Quality Components – Bearings, seals, and shims built for long‑lasting performance.
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Positraction Compatibility – Designed specifically for GM 8.5" differentials with aftermarket positraction units.
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Precision Engineering – Ensures proper fitment and smooth operation.
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Trusted Yukon Quality – Backed by a brand known for drivetrain excellence.
Built for Reliability
With the GM 8.5 Positraction Master Overhaul Kit, you’ll restore confidence in your vehicle’s drivetrain. Whether it’s a weekend cruiser, performance build, or daily driver, Yukon Gear ensures dependable performance every time.
Specifications
| Specification | Detail |
|---|---|
| Part Number | yukYK GM8.5-HD |
| Model | GM 8.5" Differential |
| Compatibility | GM 8.5" Differential with Aftermarket Positraction |
| Type | Master Overhaul Kit |
| California Proposition 65 | Yes – Cancer and Reproductive Harm Warning |
Installation Instructions
Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1973-1975 | Buick | Apollo | Base |
| 1975 | Buick | Apollo | SR |
| 1971-1974,1976-1979 | Buick | Electra | 225 |
| 1971-1974 | Buick | Electra | 225 Custom |
| 1974 | Buick | Electra | 225 Limited |
| 1973 | Buick | Electra | Base |
| 1975 | Buick | Electra | Custom |
| 1980-1989 | Buick | Electra | Estate Wagon |
| 1975-1985 | Buick | Electra | Limited |
| 1978-1985 | Buick | Electra | Park Avenue |
| 1985 | Buick | Electra | T-Type |
| 1973-1987 | Buick | Regal | Base |
| 1982-1983 | Buick | Regal | Estate Wagon |
| 1987 | Buick | Regal | GNX |
| 1984-1987 | Buick | Regal | Grand National |
| 1978-1987 | Buick | Regal | Limited |
| 1982 | Buick | Regal | Limited Turbo |
| 1978-1982 | Buick | Regal | Sport |
| 1976-1977 | Buick | Regal | SR |
| 1983-1986 | Buick | Regal | T-Type |
| 1975-1978 | Buick | Riviera | Base |
| 1975 | Buick | Riviera | GS |
| 1978 | Buick | Riviera | LXXV Anniversary Edition |
| 1976 | Buick | Riviera | Sport |
| 1976 | Buick | Riviera | SR |
| 1970,1972 | Buick | Skylark | 350 |
| 1970-1972,1975-1979 | Buick | Skylark | Base |
| 1970-1972,1978-1979 | Buick | Skylark | Custom |
| 1976-1979 | Buick | Skylark | S |
| 1978 | Buick | Skylark | Sport |
| 1975-1977 | Buick | Skylark | SR |
| 1999-2000 | Cadillac | Escalade | Base |
| 1970-1975 | Chevrolet | Bel Air | Base |
| 1994 | Chevrolet | Blazer | Base |
| 1992-1993 | Chevrolet | Blazer | Cheyenne |
| 1987 | Chevrolet | Blazer | Custom Deluxe |
| 1988-1991 | Chevrolet | Blazer | Scottsdale |
| 1987-1994 | Chevrolet | Blazer | Silverado |
| 1994 | Chevrolet | Blazer | Silverado Sport |
| 1979-1980 | Chevrolet | C10 | Big Ten |
| 1979-1981 | Chevrolet | C10 | Cheyenne |
| 1981-1986 | Chevrolet | C10 | Custom |
| 1979-1980 | Chevrolet | C10 | Custom Deluxe |
| 1981 | Chevrolet | C10 | Deluxe |
| 1979-1986 | Chevrolet | C10 | Scottsdale |
| 1979-1986 | Chevrolet | C10 | Silverado |
| 1981-1986 | Chevrolet | C10 Suburban | Custom |
| 1979-1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C10 Suburban | Deluxe |
| 1979-1980,1982,1984-1986 | Chevrolet | C10 Suburban | Scottsdale |
| 1979-1980,1982-1986 | Chevrolet | C10 Suburban | Silverado |
| 1990-1993 | Chevrolet | C1500 | 454 SS |
| 1994-1997 | Chevrolet | C1500 | Base |
| 1988-1998 | Chevrolet | C1500 | Cheyenne |
| 1999 | Chevrolet | C1500 | LS |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1988-1998 | Chevrolet | C1500 | Silverado |
| 1990-1998 | Chevrolet | C1500 | WT |
| 1992-1999 | Chevrolet | C1500 Suburban | Base |
| 1995-1999 | Chevrolet | C1500 Suburban | LS |
| 1995-1997,1999 | Chevrolet | C1500 Suburban | LT |
| 1992-1994 | Chevrolet | C1500 Suburban | Silverado |
| 1994-1997,1999-2000 | Chevrolet | C2500 | Base |
| 1989-1998 | Chevrolet | C2500 | Cheyenne |
| 1999-2000 | Chevrolet | C2500 | LS |
| 1989-1992 | Chevrolet | C2500 | Scottsdale |
| 1989-1998 | Chevrolet | C2500 | Silverado |
| 1994-1995,1998 | Chevrolet | C2500 | WT |
| 1970-1980 | Chevrolet | Camaro | Base |
| 1979-1981 | Chevrolet | Camaro | Berlinetta |
| 1973-1978 | Chevrolet | Camaro | LT |
| 1976-1978 | Chevrolet | Camaro | LT Rally Sport |
| 1976-1980 | Chevrolet | Camaro | Rally Sport |
| 1970-1973,1975 | Chevrolet | Camaro | RS |
| 1981 | Chevrolet | Camaro | Sport |
| 1970-1972 | Chevrolet | Camaro | SS |
| 1970-1974,1977-1981 | Chevrolet | Camaro | Z28 |
| 1970-1972,1986-1992 | Chevrolet | Caprice | Base |
| 1973-1996 | Chevrolet | Caprice | Classic |
| 1986-1990 | Chevrolet | Caprice | Classic Brougham |
| 1976-1978,1981-1982 | Chevrolet | Caprice | Classic Estate |
| 1976-1981 | Chevrolet | Caprice | Classic Landau |
| 1993-1994 | Chevrolet | Caprice | Classic LS |
| 1987-1990 | Chevrolet | Caprice | Classic LS Brougham |
| 1991-1993 | Chevrolet | Caprice | Classic LTZ |
| 1975-1976,1979-1980 | Chevrolet | Caprice | Classic Sport |
| 1973-1974 | Chevrolet | Caprice | Estate |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1973 | Chevrolet | Chevelle | Deluxe |
| 1971-1976 | Chevrolet | El Camino | Base |
| 1975-1976 | Chevrolet | El Camino | Classic |
| 1971-1974 | Chevrolet | El Camino | Custom |
| 1971-1976 | Chevrolet | El Camino | SS |
| 1996-2003 | Chevrolet | Express 1500 | Base |
| 1996-2003 | Chevrolet | Express 1500 | LS |
| 2001-2002 | Chevrolet | Express 1500 | LT |
| 1983 | Chevrolet | G10 | Base |
| 1979-1995 | Chevrolet | G10 | Beauville |
| 1981-1984,1986-1987 | Chevrolet | G10 | Bonaventure |
| 1979-1995 | Chevrolet | G10 | Chevy Van |
| 1979-1995 | Chevrolet | G10 | Sportvan |
| 1975-1995 | Chevrolet | G20 | Beauville |
| 1983-1984 | Chevrolet | G20 | Bonaventure |
| 1975-1995 | Chevrolet | G20 | Chevy Van |
| 1978-1981 | Chevrolet | G20 | Nomad |
| 1975-1995 | Chevrolet | G20 | Sportvan |
| 1971-1985 | Chevrolet | Impala | Base |
| 1975-1977 | Chevrolet | Impala | Custom |
| 1976 | Chevrolet | Impala | Custom Landau |
| 1981-1982 | Chevrolet | Impala | Estate |
| 1977-1979 | Chevrolet | Impala | Landau |
| 1976 | Chevrolet | Impala | S |
| 1975-1976,1979-1980 | Chevrolet | Impala | Sport |
| 1994-1996 | Chevrolet | Impala | SS |
| 1979-1981 | Chevrolet | K10 | Cheyenne |
| 1981-1986 | Chevrolet | K10 | Custom |
| 1979-1980 | Chevrolet | K10 | Custom Deluxe |
| 1981 | Chevrolet | K10 | Deluxe |
| 1979-1986 | Chevrolet | K10 | Scottsdale |
| 1979-1986 | Chevrolet | K10 | Silverado |
| 1981-1986 | Chevrolet | K10 Suburban | Custom |
| 1979-1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1979-1980,1982,1984-1986 | Chevrolet | K10 Suburban | Scottsdale |
| 1979-1980,1982-1983,1985-1986 | Chevrolet | K10 Suburban | Silverado |
| 1994-1997 | Chevrolet | K1500 | Base |
| 1988-1998 | Chevrolet | K1500 | Cheyenne |
| 1999 | Chevrolet | K1500 | LS |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1988-1998 | Chevrolet | K1500 | Silverado |
| 1991 | Chevrolet | K1500 | Sport |
| 1990-1998 | Chevrolet | K1500 | WT |
| 1992-1999 | Chevrolet | K1500 Suburban | Base |
| 1995-1999 | Chevrolet | K1500 Suburban | LS |
| 1995-1997,1999 | Chevrolet | K1500 Suburban | LT |
| 1992-1994 | Chevrolet | K1500 Suburban | Silverado |
| 1979-1980 | Chevrolet | K5 Blazer | Cheyenne |
| 1981-1986 | Chevrolet | K5 Blazer | Custom |
| 1979-1980 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1984 | Chevrolet | K5 Blazer | Scottsdale |
| 1980-1986 | Chevrolet | K5 Blazer | Silverado |
| 1973-1981 | Chevrolet | Malibu | Base |
| 1974-1983 | Chevrolet | Malibu | Classic |
| 1975-1976,1978-1980 | Chevrolet | Malibu | Classic Estate |
| 1976-1981 | Chevrolet | Malibu | Classic Landau |
| 1977,1979-1980 | Chevrolet | Malibu | Classic Sport |
| 1973-1974,1979-1980 | Chevrolet | Malibu | Estate |
| 1976,1979 | Chevrolet | Malibu | Landau |
| 1979 | Chevrolet | Malibu | Police |
| 1977,1979-1980 | Chevrolet | Malibu | Sport |
| 1973-1974 | Chevrolet | Monte Carlo | Base |
| 1973-1974,1976,1978 | Chevrolet | Monte Carlo | Landau |
| 1973,1975-1977 | Chevrolet | Monte Carlo | S |
| 1978 | Chevrolet | Monte Carlo | Sport |
| 1970-1979 | Chevrolet | Nova | Base |
| 1976-1977 | Chevrolet | Nova | Concours |
| 1973-1975,1978-1979 | Chevrolet | Nova | Custom |
| 1975 | Chevrolet | Nova | LN |
| 1975-1978 | Chevrolet | Nova | Police |
| 1977-1979 | Chevrolet | Nova | Rally |
| 1976 | Chevrolet | Nova | SS |
| 1987 | Chevrolet | R10 | Custom Deluxe |
| 1987 | Chevrolet | R10 | Scottsdale |
| 1987 | Chevrolet | R10 | Silverado |
| 1987 | Chevrolet | R10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R10 Suburban | Silverado |
| 1989-1991 | Chevrolet | R1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R1500 Suburban | Silverado |
| 1994-2000 | Chevrolet | S10 | Base |
| 1994-2000 | Chevrolet | S10 | LS |
| 1994-1998 | Chevrolet | S10 | SS |
| 1999-2000 | Chevrolet | S10 | Xtreme |
| 1994-2000 | Chevrolet | S10 | ZR2 |
| 2000 | Chevrolet | Suburban 1500 | Base |
| 2000 | Chevrolet | Suburban 1500 | LS |
| 2000 | Chevrolet | Suburban 1500 | LT |
| 1995-1998 | Chevrolet | Tahoe | Base |
| 1995-1998 | Chevrolet | Tahoe | LS |
| 1995-1998 | Chevrolet | Tahoe | LT |
| 1987 | Chevrolet | V10 | Custom Deluxe |
| 1987 | Chevrolet | V10 | Scottsdale |
| 1987 | Chevrolet | V10 | Silverado |
| 1987 | Chevrolet | V10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V10 Suburban | Silverado |
| 1989-1991 | Chevrolet | V1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | V1500 Suburban | Silverado |
| 1979-1986 | GMC | C1500 | Base |
| 1979-1980 | GMC | C1500 | Heavy Half |
| 1979-1986 | GMC | C1500 | High Sierra |
| 1988-1993 | GMC | C1500 | Sierra |
| 1979-1986 | GMC | C1500 | Sierra Classic |
| 1979-1982 | GMC | C1500 | Sierra Grande |
| 1997 | GMC | C1500 | Sierra GT |
| 1994-1999 | GMC | C1500 | Sierra SL |
| 1988-1999 | GMC | C1500 | Sierra SLE |
| 1994-1999 | GMC | C1500 | Sierra SLT |
| 1988-1993 | GMC | C1500 | Sierra SLX |
REVIEWS
Rebuilt my GM 8.5 positraction differential with this Yukon kit. Bearings and seals fit perfectly, install was smooth, and the car runs like new again. Excellent quality!
Jake K.
Detroit, MI
I used the Yukon GM 8.5 overhaul kit on my Camaro with aftermarket positraction. Everything was included, fit was spot‑on, and the differential runs quiet now. Highly recommend!
Sarah M.
Boise, ID
Specifications
Fitment Data
• Engineered for precision compatibility with high-performance builds.
• Tested under extreme mechanical stress for guaranteed structural integrity.
Use the Riot Vehicle Finder to verify exact sub-model compatibility.
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