Mark Williams Billet Main Cap — Mopar 8.75" Differential Carrier

SKU: BJFM_53950
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Fortify Your Mopar 8.75" Differential with Mark Williams Billet Main ...Read More

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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

Fortify Your Mopar 8.75" Differential with Mark Williams Billet Main Caps

Unleash the full potential of your Mopar 8.75-inch differential with the Mark Williams Billet Main Cap. Engineered to provide superior strength and rigidity, this main cap is a critical upgrade for high-horsepower applications and aggressive driving. By significantly reducing main cap deflection, it ensures precise gear mesh and extends the lifespan of your ring and pinion, preventing costly failures under extreme loads.

Precision-Machined Steel with Black Oxide Finish

Each Mark Williams main cap is precision-machined from high-grade steel, offering exceptional durability and resistance to fatigue. The robust construction is further enhanced by a black oxide finish, which provides a layer of corrosion protection and a professional appearance. This kit includes all necessary hardware for a complete and secure installation, making it a straightforward enhancement for your Mopar 8.75" rear end.

  • Application: Mopar 8.75 inch Differential
  • Material: High-Strength Steel
  • Finish: Black Oxide
  • Includes: Main Cap and Hardware
  • Function: Reinforces differential carrier, reduces cap deflection
  • Benefit: Improves gear mesh, extends differential life

The Mark Williams Advantage in Drivetrain Reinforcement

Mark Williams is a trusted name in high-performance drivetrain components, renowned for their uncompromising quality and engineering expertise. These billet main caps are a testament to that legacy, designed to meet the rigorous demands of drag racing and other motorsports. By upgrading to Mark Williams main caps, you're investing in the ultimate reliability and performance of your Mopar 8.75" differential. Secure your drivetrain's future with GGCRACING.COM.

Product Details

Product Description
Part Numbers
Sizing & Fit

Fortify Your Mopar 8.75" Differential with Mark Williams Billet Main Caps

Unleash the full potential of your Mopar 8.75-inch differential with the Mark Williams Billet Main Cap. Engineered to provide superior strength and rigidity, this main cap is a critical upgrade for high-horsepower applications and aggressive driving. By significantly reducing main cap deflection, it ensures precise gear mesh and extends the lifespan of your ring and pinion, preventing costly failures under extreme loads.

Precision-Machined Steel with Black Oxide Finish

Each Mark Williams main cap is precision-machined from high-grade steel, offering exceptional durability and resistance to fatigue. The robust construction is further enhanced by a black oxide finish, which provides a layer of corrosion protection and a professional appearance. This kit includes all necessary hardware for a complete and secure installation, making it a straightforward enhancement for your Mopar 8.75" rear end.

  • Application: Mopar 8.75 inch Differential
  • Material: High-Strength Steel
  • Finish: Black Oxide
  • Includes: Main Cap and Hardware
  • Function: Reinforces differential carrier, reduces cap deflection
  • Benefit: Improves gear mesh, extends differential life

The Mark Williams Advantage in Drivetrain Reinforcement

Mark Williams is a trusted name in high-performance drivetrain components, renowned for their uncompromising quality and engineering expertise. These billet main caps are a testament to that legacy, designed to meet the rigorous demands of drag racing and other motorsports. By upgrading to Mark Williams main caps, you're investing in the ultimate reliability and performance of your Mopar 8.75" differential. Secure your drivetrain's future with GGCRACING.COM.

Product Details

Product Description

Fortify Your Mopar 8.75" Differential with Mark Williams Billet Main Caps

Unleash the full potential of your Mopar 8.75-inch differential with the Mark Williams Billet Main Cap. Engineered to provide superior strength and rigidity, this main cap is a critical upgrade for high-horsepower applications and aggressive driving. By significantly reducing main cap deflection, it ensures precise gear mesh and extends the lifespan of your ring and pinion, preventing costly failures under extreme loads.

Precision-Machined Steel with Black Oxide Finish

Each Mark Williams main cap is precision-machined from high-grade steel, offering exceptional durability and resistance to fatigue. The robust construction is further enhanced by a black oxide finish, which provides a layer of corrosion protection and a professional appearance. This kit includes all necessary hardware for a complete and secure installation, making it a straightforward enhancement for your Mopar 8.75" rear end.

  • Application: Mopar 8.75 inch Differential
  • Material: High-Strength Steel
  • Finish: Black Oxide
  • Includes: Main Cap and Hardware
  • Function: Reinforces differential carrier, reduces cap deflection
  • Benefit: Improves gear mesh, extends differential life

The Mark Williams Advantage in Drivetrain Reinforcement

Mark Williams is a trusted name in high-performance drivetrain components, renowned for their uncompromising quality and engineering expertise. These billet main caps are a testament to that legacy, designed to meet the rigorous demands of drag racing and other motorsports. By upgrading to Mark Williams main caps, you're investing in the ultimate reliability and performance of your Mopar 8.75" differential. Secure your drivetrain's future with GGCRACING.COM.

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