Specialty Products 12-Bolt Differential Cover Gasket — Fits 1964-1995 GM Trucks

SKU: BCNJ_4930

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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 Specialty Products chrome - Archived

Specialty Products chrome - Archived engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Specialty Products chrome - Archived lineup with fast shipping and expert fitment support — order with confidence.

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Reliable Sealing for Your GM 12-Bolt Differential

Maintain the integrity of your drivetrain with this high-quality differential cover gasket, designed specifically for GM 12-bolt rear ends found in trucks from 1964 through 1995. A leaking differential can lead to premature gear wear and catastrophic failure; our replacement gasket provides a precision fit to ensure your lubricant stays exactly where it belongs.

Product Highlights

  • Compatibility: GM 12-Bolt Rear Axles
  • Fitment Years: 1964-1995
  • Material: High-Grade Compressed Fiber
  • Design: Direct OEM Replacement
  • Prevents Gear Oil Leaks

Constructed from durable compressed fiber, this gasket is engineered to withstand the thermal cycling and pressure variations common in heavy-duty truck applications. It offers excellent sealing properties, even on slightly imperfect cover surfaces, providing peace of mind during your next fluid change or differential service. Whether you are restoring a classic C10 or maintaining a workhorse, this gasket is an essential component for any drivetrain maintenance project. Don't let a small leak turn into a major repair bill—replace your old, brittle gasket with this reliable, cost-effective solution. Find all your essential drivetrain maintenance parts and gaskets right here at GGCRACING.

About Specialty Products chrome - Archived

Specialty Products chrome - Archived engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Specialty Products chrome - Archived lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Reliable Sealing for Your GM 12-Bolt Differential

Maintain the integrity of your drivetrain with this high-quality differential cover gasket, designed specifically for GM 12-bolt rear ends found in trucks from 1964 through 1995. A leaking differential can lead to premature gear wear and catastrophic failure; our replacement gasket provides a precision fit to ensure your lubricant stays exactly where it belongs.

Product Highlights

  • Compatibility: GM 12-Bolt Rear Axles
  • Fitment Years: 1964-1995
  • Material: High-Grade Compressed Fiber
  • Design: Direct OEM Replacement
  • Prevents Gear Oil Leaks

Constructed from durable compressed fiber, this gasket is engineered to withstand the thermal cycling and pressure variations common in heavy-duty truck applications. It offers excellent sealing properties, even on slightly imperfect cover surfaces, providing peace of mind during your next fluid change or differential service. Whether you are restoring a classic C10 or maintaining a workhorse, this gasket is an essential component for any drivetrain maintenance project. Don't let a small leak turn into a major repair bill—replace your old, brittle gasket with this reliable, cost-effective solution. Find all your essential drivetrain maintenance parts and gaskets right here at GGCRACING.

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