Yukon Gear 8.5in GM Extra HD Standard Open Case — Fits 1970-1989 GM Vehicles

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SKU: YUKYC G26010481-XHD
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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 8.5in GM Extra HD Standard Open Case

Enhance the performance and reliability of your GM vehicle's drivetrain with the Yukon Gear & Axle 8.5in Extra HD Standard Open Case. Engineered for demanding applications, this differential housing is constructed from high-quality materials and machined to precise tolerances, ensuring a robust and long-lasting solution for your vehicle.

Key Features:

  • Heavy-Duty Construction: Built to withstand higher torque and stress, making it ideal for performance and heavy-duty use.
  • Precise Machining: Ensures tight tolerances for smooth operation and optimal gear mesh.
  • Includes Gears: Comes loaded with spider and side gears, ready for installation.
  • Broad Fitment: Designed for a wide range of GM vehicles with 8.5-inch ring gears, including popular models from Chevrolet and Oldsmobile.

This standard open differential case is a direct replacement for your original equipment, offering superior strength and durability. Whether you're rebuilding a worn differential or upgrading for increased performance, the Yukon Gear Extra HD case provides the peace of mind that comes with a quality component. Its robust design helps to minimize flex and maintain gear alignment under load, contributing to a quieter and more efficient drivetrain.

Vehicle Compatibility: This case is compatible with numerous GM models from the 1970s through the 1980s, including various Chevrolet Camaro, Caprice, Impala, El Camino, Monte Carlo, K10, K20, K5 Blazer, and Oldsmobile Cutlass models, as well as Buick Apollo and Electra models. Please verify fitment for your specific year and model.

For a dependable differential housing that offers exceptional strength and precision, choose the Yukon Gear 8.5in Extra HD Standard Open Case. Find this and other premium drivetrain components 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
1975-1989 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1989 Buick Electra Park Avenue
1980-1989 Buick Electra Estate Wagon
1985-1989 Buick Electra T-Type
1989 Buick Electra Park Avenue Ultra
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 Base
1970-1972 Buick Skylark Custom
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 Silverado Sport
1994-1999 Chevrolet Blazer Base
1995-2000 Chevrolet Blazer LT
1996-2000 Chevrolet Blazer LS
1999-2000 Chevrolet Blazer Trailblazer
1979-1980 Chevrolet C10 Big Ten
1979-1980 Chevrolet C10 Custom Deluxe
1979-1981 Chevrolet C10 Cheyenne
1979-1986 Chevrolet C10 Scottsdale
1979-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1977-1980 Chevrolet C10 Suburban Silverado
1977-1980 Chevrolet C10 Suburban Custom Deluxe
1977-1980 Chevrolet C10 Suburban Scottsdale
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale

…and 280 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 8.5in GM Extra HD Standard Open Case

Enhance the performance and reliability of your GM vehicle's drivetrain with the Yukon Gear & Axle 8.5in Extra HD Standard Open Case. Engineered for demanding applications, this differential housing is constructed from high-quality materials and machined to precise tolerances, ensuring a robust and long-lasting solution for your vehicle.

Key Features:

  • Heavy-Duty Construction: Built to withstand higher torque and stress, making it ideal for performance and heavy-duty use.
  • Precise Machining: Ensures tight tolerances for smooth operation and optimal gear mesh.
  • Includes Gears: Comes loaded with spider and side gears, ready for installation.
  • Broad Fitment: Designed for a wide range of GM vehicles with 8.5-inch ring gears, including popular models from Chevrolet and Oldsmobile.

This standard open differential case is a direct replacement for your original equipment, offering superior strength and durability. Whether you're rebuilding a worn differential or upgrading for increased performance, the Yukon Gear Extra HD case provides the peace of mind that comes with a quality component. Its robust design helps to minimize flex and maintain gear alignment under load, contributing to a quieter and more efficient drivetrain.

Vehicle Compatibility: This case is compatible with numerous GM models from the 1970s through the 1980s, including various Chevrolet Camaro, Caprice, Impala, El Camino, Monte Carlo, K10, K20, K5 Blazer, and Oldsmobile Cutlass models, as well as Buick Apollo and Electra models. Please verify fitment for your specific year and model.

For a dependable differential housing that offers exceptional strength and precision, choose the Yukon Gear 8.5in Extra HD Standard Open Case. Find this and other premium drivetrain components 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
1975-1989 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1989 Buick Electra Park Avenue
1980-1989 Buick Electra Estate Wagon
1985-1989 Buick Electra T-Type
1989 Buick Electra Park Avenue Ultra
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 Base
1970-1972 Buick Skylark Custom
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 Silverado Sport
1994-1999 Chevrolet Blazer Base
1995-2000 Chevrolet Blazer LT
1996-2000 Chevrolet Blazer LS
1999-2000 Chevrolet Blazer Trailblazer
1979-1980 Chevrolet C10 Big Ten
1979-1980 Chevrolet C10 Custom Deluxe
1979-1981 Chevrolet C10 Cheyenne
1979-1986 Chevrolet C10 Scottsdale
1979-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1977-1980 Chevrolet C10 Suburban Silverado
1977-1980 Chevrolet C10 Suburban Custom Deluxe
1977-1980 Chevrolet C10 Suburban Scottsdale
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale

…and 280 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 8.5in GM Extra HD Standard Open Case

Enhance the performance and reliability of your GM vehicle's drivetrain with the Yukon Gear & Axle 8.5in Extra HD Standard Open Case. Engineered for demanding applications, this differential housing is constructed from high-quality materials and machined to precise tolerances, ensuring a robust and long-lasting solution for your vehicle.

Key Features:

  • Heavy-Duty Construction: Built to withstand higher torque and stress, making it ideal for performance and heavy-duty use.
  • Precise Machining: Ensures tight tolerances for smooth operation and optimal gear mesh.
  • Includes Gears: Comes loaded with spider and side gears, ready for installation.
  • Broad Fitment: Designed for a wide range of GM vehicles with 8.5-inch ring gears, including popular models from Chevrolet and Oldsmobile.

This standard open differential case is a direct replacement for your original equipment, offering superior strength and durability. Whether you're rebuilding a worn differential or upgrading for increased performance, the Yukon Gear Extra HD case provides the peace of mind that comes with a quality component. Its robust design helps to minimize flex and maintain gear alignment under load, contributing to a quieter and more efficient drivetrain.

Vehicle Compatibility: This case is compatible with numerous GM models from the 1970s through the 1980s, including various Chevrolet Camaro, Caprice, Impala, El Camino, Monte Carlo, K10, K20, K5 Blazer, and Oldsmobile Cutlass models, as well as Buick Apollo and Electra models. Please verify fitment for your specific year and model.

For a dependable differential housing that offers exceptional strength and precision, choose the Yukon Gear 8.5in Extra HD Standard Open Case. Find this and other premium drivetrain components 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
1975-1989 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1989 Buick Electra Park Avenue
1980-1989 Buick Electra Estate Wagon
1985-1989 Buick Electra T-Type
1989 Buick Electra Park Avenue Ultra
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 Base
1970-1972 Buick Skylark Custom
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 Silverado Sport
1994-1999 Chevrolet Blazer Base
1995-2000 Chevrolet Blazer LT
1996-2000 Chevrolet Blazer LS
1999-2000 Chevrolet Blazer Trailblazer
1979-1980 Chevrolet C10 Big Ten
1979-1980 Chevrolet C10 Custom Deluxe
1979-1981 Chevrolet C10 Cheyenne
1979-1986 Chevrolet C10 Scottsdale
1979-1986 Chevrolet C10 Silverado
1981 Chevrolet C10 Deluxe
1981-1986 Chevrolet C10 Custom
1977-1980 Chevrolet C10 Suburban Silverado
1977-1980 Chevrolet C10 Suburban Custom Deluxe
1977-1980 Chevrolet C10 Suburban Scottsdale
1981 Chevrolet C10 Suburban Deluxe
1981-1986 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale

…and 280 additional fitments. Contact us to confirm yours.

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