Yukon Gear Master Overhaul Kit for GM 8.5in Diff w/ Aftermarket Positraction — Fits 1970-1976

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SKU: YUKYK GM8.5-HD
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Watch in action

Yukon Gear Master Overhaul Kit for GM 8.5in Differentials with Aftermarket Positraction

Upgrade your differential rebuild with the Yukon Gear Master Overhaul Kit, specifically designed for GM 8.5-inch differentials utilizing aftermarket positraction units. This kit ensures compatibility and provides the high-quality components needed for a robust and reliable installation, perfect for performance-oriented builds.

Optimized for Performance Differentials

This specialized kit is engineered to work seamlessly with popular aftermarket positraction units, including Yukon Dura Grip, Eaton Posi, ValueTrac, True Trac, Pro-Series Auburn, and Detroit Locker. It's also suitable for standard carriers with large bearing journals, offering versatility for various setups.

Premium Components Included

Yukon Gear & Axle delivers exceptional quality with this Master Overhaul Kit, featuring:

  • High-performance Timken bearings and races for superior durability under stress.
  • All essential small parts, seals, and gaskets for a complete and professional installation.
  • Carrier bearings and races
  • Pinion bearings and races
  • Pinion seal
  • Complete shim kit for precise gear setup
  • Ring gear bolts
  • Pinion nut
  • Crush sleeve (if applicable)
  • Oil baffles and slingers (if applicable)
  • Thread locking compound
  • Marking compound with brush for accurate gear pattern analysis

Extensive Vehicle Compatibility

This kit is designed for GM 8.5-inch differentials found in a wide range of vehicles from 1970 to 1976, including Chevrolet Camaro, Nova, El Camino, Impala, Caprice, Oldsmobile Cutlass, Buick Regal, and Skylark models. Ensure your performance differential is rebuilt with the best parts available.

Trust Yukon Gear & Axle for the most comprehensive overhaul kits. Get the parts you need for your performance build at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1973-1975 Buick Apollo Base
1975 Buick Apollo SR
1971-1974 Buick Electra 225
1971-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1985 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1985 Buick Electra Park Avenue
1980-1989 Buick Electra Estate Wagon
1985 Buick Electra T-Type
1973-1987 Buick Regal Base
1976-1977 Buick Regal SR
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1975 Buick Riviera GS
1975-1978 Buick Riviera Base
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1970 Buick Skylark 350
1970-1972 Buick Skylark Custom
1970-1972 Buick Skylark Base
1972 Buick Skylark 350
1975-1977 Buick Skylark SR
1975-1979 Buick Skylark Base
1976-1979 Buick Skylark S
1978 Buick Skylark Sport
1978-1979 Buick Skylark Custom
1999-2000 Cadillac Escalade Base
1970-1975 Chevrolet Bel Air Base
1987 Chevrolet Blazer Custom Deluxe
1987-1994 Chevrolet Blazer Silverado
1988-1991 Chevrolet Blazer Scottsdale
1992-1993 Chevrolet Blazer Cheyenne
1994 Chevrolet Blazer Base
1994 Chevrolet Blazer Silverado Sport
1979-1980 Chevrolet C10 Custom Deluxe
1979-1980 Chevrolet C10 Big Ten
1979-1981 Chevrolet C10 Cheyenne
1979-1986 Chevrolet C10 Scottsdale
1979-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1979-1980 Chevrolet C10 Suburban Custom Deluxe
1979-1980 Chevrolet C10 Suburban Scottsdale
1979-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982-1986 Chevrolet C10 Suburban Silverado
1984-1986 Chevrolet C10 Suburban Scottsdale
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Cheyenne

…and 289 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Watch in action

Yukon Gear Master Overhaul Kit for GM 8.5in Differentials with Aftermarket Positraction

Upgrade your differential rebuild with the Yukon Gear Master Overhaul Kit, specifically designed for GM 8.5-inch differentials utilizing aftermarket positraction units. This kit ensures compatibility and provides the high-quality components needed for a robust and reliable installation, perfect for performance-oriented builds.

Optimized for Performance Differentials

This specialized kit is engineered to work seamlessly with popular aftermarket positraction units, including Yukon Dura Grip, Eaton Posi, ValueTrac, True Trac, Pro-Series Auburn, and Detroit Locker. It's also suitable for standard carriers with large bearing journals, offering versatility for various setups.

Premium Components Included

Yukon Gear & Axle delivers exceptional quality with this Master Overhaul Kit, featuring:

  • High-performance Timken bearings and races for superior durability under stress.
  • All essential small parts, seals, and gaskets for a complete and professional installation.
  • Carrier bearings and races
  • Pinion bearings and races
  • Pinion seal
  • Complete shim kit for precise gear setup
  • Ring gear bolts
  • Pinion nut
  • Crush sleeve (if applicable)
  • Oil baffles and slingers (if applicable)
  • Thread locking compound
  • Marking compound with brush for accurate gear pattern analysis

Extensive Vehicle Compatibility

This kit is designed for GM 8.5-inch differentials found in a wide range of vehicles from 1970 to 1976, including Chevrolet Camaro, Nova, El Camino, Impala, Caprice, Oldsmobile Cutlass, Buick Regal, and Skylark models. Ensure your performance differential is rebuilt with the best parts available.

Trust Yukon Gear & Axle for the most comprehensive overhaul kits. Get the parts you need for your performance build at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1973-1975 Buick Apollo Base
1975 Buick Apollo SR
1971-1974 Buick Electra 225
1971-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1985 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1985 Buick Electra Park Avenue
1980-1989 Buick Electra Estate Wagon
1985 Buick Electra T-Type
1973-1987 Buick Regal Base
1976-1977 Buick Regal SR
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1975 Buick Riviera GS
1975-1978 Buick Riviera Base
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1970 Buick Skylark 350
1970-1972 Buick Skylark Custom
1970-1972 Buick Skylark Base
1972 Buick Skylark 350
1975-1977 Buick Skylark SR
1975-1979 Buick Skylark Base
1976-1979 Buick Skylark S
1978 Buick Skylark Sport
1978-1979 Buick Skylark Custom
1999-2000 Cadillac Escalade Base
1970-1975 Chevrolet Bel Air Base
1987 Chevrolet Blazer Custom Deluxe
1987-1994 Chevrolet Blazer Silverado
1988-1991 Chevrolet Blazer Scottsdale
1992-1993 Chevrolet Blazer Cheyenne
1994 Chevrolet Blazer Base
1994 Chevrolet Blazer Silverado Sport
1979-1980 Chevrolet C10 Custom Deluxe
1979-1980 Chevrolet C10 Big Ten
1979-1981 Chevrolet C10 Cheyenne
1979-1986 Chevrolet C10 Scottsdale
1979-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1979-1980 Chevrolet C10 Suburban Custom Deluxe
1979-1980 Chevrolet C10 Suburban Scottsdale
1979-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982-1986 Chevrolet C10 Suburban Silverado
1984-1986 Chevrolet C10 Suburban Scottsdale
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Cheyenne

…and 289 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Watch in action

Yukon Gear Master Overhaul Kit for GM 8.5in Differentials with Aftermarket Positraction

Upgrade your differential rebuild with the Yukon Gear Master Overhaul Kit, specifically designed for GM 8.5-inch differentials utilizing aftermarket positraction units. This kit ensures compatibility and provides the high-quality components needed for a robust and reliable installation, perfect for performance-oriented builds.

Optimized for Performance Differentials

This specialized kit is engineered to work seamlessly with popular aftermarket positraction units, including Yukon Dura Grip, Eaton Posi, ValueTrac, True Trac, Pro-Series Auburn, and Detroit Locker. It's also suitable for standard carriers with large bearing journals, offering versatility for various setups.

Premium Components Included

Yukon Gear & Axle delivers exceptional quality with this Master Overhaul Kit, featuring:

  • High-performance Timken bearings and races for superior durability under stress.
  • All essential small parts, seals, and gaskets for a complete and professional installation.
  • Carrier bearings and races
  • Pinion bearings and races
  • Pinion seal
  • Complete shim kit for precise gear setup
  • Ring gear bolts
  • Pinion nut
  • Crush sleeve (if applicable)
  • Oil baffles and slingers (if applicable)
  • Thread locking compound
  • Marking compound with brush for accurate gear pattern analysis

Extensive Vehicle Compatibility

This kit is designed for GM 8.5-inch differentials found in a wide range of vehicles from 1970 to 1976, including Chevrolet Camaro, Nova, El Camino, Impala, Caprice, Oldsmobile Cutlass, Buick Regal, and Skylark models. Ensure your performance differential is rebuilt with the best parts available.

Trust Yukon Gear & Axle for the most comprehensive overhaul kits. Get the parts you need for your performance build at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1973-1975 Buick Apollo Base
1975 Buick Apollo SR
1971-1974 Buick Electra 225
1971-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1985 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1985 Buick Electra Park Avenue
1980-1989 Buick Electra Estate Wagon
1985 Buick Electra T-Type
1973-1987 Buick Regal Base
1976-1977 Buick Regal SR
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1975 Buick Riviera GS
1975-1978 Buick Riviera Base
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1970 Buick Skylark 350
1970-1972 Buick Skylark Custom
1970-1972 Buick Skylark Base
1972 Buick Skylark 350
1975-1977 Buick Skylark SR
1975-1979 Buick Skylark Base
1976-1979 Buick Skylark S
1978 Buick Skylark Sport
1978-1979 Buick Skylark Custom
1999-2000 Cadillac Escalade Base
1970-1975 Chevrolet Bel Air Base
1987 Chevrolet Blazer Custom Deluxe
1987-1994 Chevrolet Blazer Silverado
1988-1991 Chevrolet Blazer Scottsdale
1992-1993 Chevrolet Blazer Cheyenne
1994 Chevrolet Blazer Base
1994 Chevrolet Blazer Silverado Sport
1979-1980 Chevrolet C10 Custom Deluxe
1979-1980 Chevrolet C10 Big Ten
1979-1981 Chevrolet C10 Cheyenne
1979-1986 Chevrolet C10 Scottsdale
1979-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1979-1980 Chevrolet C10 Suburban Custom Deluxe
1979-1980 Chevrolet C10 Suburban Scottsdale
1979-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982-1986 Chevrolet C10 Suburban Silverado
1984-1986 Chevrolet C10 Suburban Scottsdale
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Cheyenne

…and 289 additional fitments. Contact us to confirm yours.

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