Yukon Gear & Axle USA Standard Master Overhaul Kit for GM 12-Bolt Differential

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SKU: YUKZK GM12P
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Sale price$179.99 Regular price$189.00
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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.

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USA Standard Master Overhaul Kit for GM 12-Bolt Differentials

Rebuild your classic GM differential with confidence using the USA Standard Master Overhaul Kit from Yukon Gear & Axle. This comprehensive kit is specifically designed for the popular GM 12-bolt differential, providing all the necessary high-quality components for a successful installation. Whether you're restoring a vintage muscle car or upgrading a classic truck, this kit ensures your differential operates smoothly and reliably.

Precision Components for Classic Applications

  • Premium Bearings & Races: Includes durable Koyo/Timken bearings and races for exceptional longevity and performance.
  • Essential Small Parts: Comes with all required seals, gaskets, and minor hardware for a complete rebuild.
  • Vehicle Specific Fitment: Engineered for the GM 12-bolt axle, ensuring precise fit and function.
  • Comprehensive Kit: USA Standard Gear meticulously curates each kit to include everything needed for your specific application.

This master overhaul kit is suitable for a wide range of classic GM vehicles, including Buick Wildcats, Chevrolet Bel Airs, Biscaynes, Chevelles, Impalas, and Camaros from the mid-1960s through the early 1970s. It's the perfect choice for enthusiasts and mechanics working on iconic vehicles that demand reliable drivetrain components. Trust Yukon Gear & Axle for your classic vehicle's differential needs.

Ensure your classic GM 12-bolt performs at its best. Find your USA Standard Master Overhaul Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1964-1969 Buick Wildcat Base
1965 Buick Wildcat Deluxe
1965-1970 Buick Wildcat Custom
1966 Buick Wildcat Gran Sport
1964-1972 Chevrolet Bel Air Base
1964-1972 Chevrolet Biscayne Base
1967-1972 Chevrolet Camaro Base
1967-1972 Chevrolet Camaro RS
1967-1972 Chevrolet Camaro Z28
1966-1970 Chevrolet Caprice Base
1964-1968 Chevrolet Chevelle Base
1964-1972 Chevrolet Chevelle SS
1965-1967 Chevrolet Chevelle Deluxe
1967-1968 Chevrolet Chevelle 300
1967-1969 Chevrolet Chevelle 300 Deluxe
1967-1972 Chevrolet Chevelle Concours
1968-1972 Chevrolet Chevelle Malibu
1968-1972 Chevrolet Chevelle Nomad
1969-1972 Chevrolet Chevelle Greenbrier
1970-1972 Chevrolet Chevelle Base
1964-1967 Chevrolet Chevy II Base
1964-1968 Chevrolet Chevy II Nova
1965-1972 Chevrolet El Camino Base
1968-1972 Chevrolet El Camino Custom
1968-1972 Chevrolet El Camino SS
1964-1967 Chevrolet Impala SS
1964-1972 Chevrolet Impala Base
1970-1972 Chevrolet Monte Carlo Base
1969-1972 Chevrolet Nova Base
1969 Pontiac Firebird 350 HO
1969 Pontiac Firebird 400
1969 Pontiac Firebird Sprint
1969-1972 Pontiac Firebird Base
1969-1972 Pontiac Firebird Trans Am
1970-1972 Pontiac Firebird Esprit
1970-1972 Pontiac Firebird Formula
1970-1972 Pontiac GTO Base

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

USA Standard Master Overhaul Kit for GM 12-Bolt Differentials

Rebuild your classic GM differential with confidence using the USA Standard Master Overhaul Kit from Yukon Gear & Axle. This comprehensive kit is specifically designed for the popular GM 12-bolt differential, providing all the necessary high-quality components for a successful installation. Whether you're restoring a vintage muscle car or upgrading a classic truck, this kit ensures your differential operates smoothly and reliably.

Precision Components for Classic Applications

  • Premium Bearings & Races: Includes durable Koyo/Timken bearings and races for exceptional longevity and performance.
  • Essential Small Parts: Comes with all required seals, gaskets, and minor hardware for a complete rebuild.
  • Vehicle Specific Fitment: Engineered for the GM 12-bolt axle, ensuring precise fit and function.
  • Comprehensive Kit: USA Standard Gear meticulously curates each kit to include everything needed for your specific application.

This master overhaul kit is suitable for a wide range of classic GM vehicles, including Buick Wildcats, Chevrolet Bel Airs, Biscaynes, Chevelles, Impalas, and Camaros from the mid-1960s through the early 1970s. It's the perfect choice for enthusiasts and mechanics working on iconic vehicles that demand reliable drivetrain components. Trust Yukon Gear & Axle for your classic vehicle's differential needs.

Ensure your classic GM 12-bolt performs at its best. Find your USA Standard Master Overhaul Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1964-1969 Buick Wildcat Base
1965 Buick Wildcat Deluxe
1965-1970 Buick Wildcat Custom
1966 Buick Wildcat Gran Sport
1964-1972 Chevrolet Bel Air Base
1964-1972 Chevrolet Biscayne Base
1967-1972 Chevrolet Camaro Base
1967-1972 Chevrolet Camaro RS
1967-1972 Chevrolet Camaro Z28
1966-1970 Chevrolet Caprice Base
1964-1968 Chevrolet Chevelle Base
1964-1972 Chevrolet Chevelle SS
1965-1967 Chevrolet Chevelle Deluxe
1967-1968 Chevrolet Chevelle 300
1967-1969 Chevrolet Chevelle 300 Deluxe
1967-1972 Chevrolet Chevelle Concours
1968-1972 Chevrolet Chevelle Malibu
1968-1972 Chevrolet Chevelle Nomad
1969-1972 Chevrolet Chevelle Greenbrier
1970-1972 Chevrolet Chevelle Base
1964-1967 Chevrolet Chevy II Base
1964-1968 Chevrolet Chevy II Nova
1965-1972 Chevrolet El Camino Base
1968-1972 Chevrolet El Camino Custom
1968-1972 Chevrolet El Camino SS
1964-1967 Chevrolet Impala SS
1964-1972 Chevrolet Impala Base
1970-1972 Chevrolet Monte Carlo Base
1969-1972 Chevrolet Nova Base
1969 Pontiac Firebird 350 HO
1969 Pontiac Firebird 400
1969 Pontiac Firebird Sprint
1969-1972 Pontiac Firebird Base
1969-1972 Pontiac Firebird Trans Am
1970-1972 Pontiac Firebird Esprit
1970-1972 Pontiac Firebird Formula
1970-1972 Pontiac GTO Base

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

USA Standard Master Overhaul Kit for GM 12-Bolt Differentials

Rebuild your classic GM differential with confidence using the USA Standard Master Overhaul Kit from Yukon Gear & Axle. This comprehensive kit is specifically designed for the popular GM 12-bolt differential, providing all the necessary high-quality components for a successful installation. Whether you're restoring a vintage muscle car or upgrading a classic truck, this kit ensures your differential operates smoothly and reliably.

Precision Components for Classic Applications

  • Premium Bearings & Races: Includes durable Koyo/Timken bearings and races for exceptional longevity and performance.
  • Essential Small Parts: Comes with all required seals, gaskets, and minor hardware for a complete rebuild.
  • Vehicle Specific Fitment: Engineered for the GM 12-bolt axle, ensuring precise fit and function.
  • Comprehensive Kit: USA Standard Gear meticulously curates each kit to include everything needed for your specific application.

This master overhaul kit is suitable for a wide range of classic GM vehicles, including Buick Wildcats, Chevrolet Bel Airs, Biscaynes, Chevelles, Impalas, and Camaros from the mid-1960s through the early 1970s. It's the perfect choice for enthusiasts and mechanics working on iconic vehicles that demand reliable drivetrain components. Trust Yukon Gear & Axle for your classic vehicle's differential needs.

Ensure your classic GM 12-bolt performs at its best. Find your USA Standard Master Overhaul Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1964-1969 Buick Wildcat Base
1965 Buick Wildcat Deluxe
1965-1970 Buick Wildcat Custom
1966 Buick Wildcat Gran Sport
1964-1972 Chevrolet Bel Air Base
1964-1972 Chevrolet Biscayne Base
1967-1972 Chevrolet Camaro Base
1967-1972 Chevrolet Camaro RS
1967-1972 Chevrolet Camaro Z28
1966-1970 Chevrolet Caprice Base
1964-1968 Chevrolet Chevelle Base
1964-1972 Chevrolet Chevelle SS
1965-1967 Chevrolet Chevelle Deluxe
1967-1968 Chevrolet Chevelle 300
1967-1969 Chevrolet Chevelle 300 Deluxe
1967-1972 Chevrolet Chevelle Concours
1968-1972 Chevrolet Chevelle Malibu
1968-1972 Chevrolet Chevelle Nomad
1969-1972 Chevrolet Chevelle Greenbrier
1970-1972 Chevrolet Chevelle Base
1964-1967 Chevrolet Chevy II Base
1964-1968 Chevrolet Chevy II Nova
1965-1972 Chevrolet El Camino Base
1968-1972 Chevrolet El Camino Custom
1968-1972 Chevrolet El Camino SS
1964-1967 Chevrolet Impala SS
1964-1972 Chevrolet Impala Base
1970-1972 Chevrolet Monte Carlo Base
1969-1972 Chevrolet Nova Base
1969 Pontiac Firebird 350 HO
1969 Pontiac Firebird 400
1969 Pontiac Firebird Sprint
1969-1972 Pontiac Firebird Base
1969-1972 Pontiac Firebird Trans Am
1970-1972 Pontiac Firebird Esprit
1970-1972 Pontiac Firebird Formula
1970-1972 Pontiac GTO Base

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