Moser Engineering A123003 30 Spline 12-Bolt C-Clip Axle Shaft Pair — Fits 1968-1981 GM A-Body & F-Body

SKU: BJFQ_A123003
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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 Moser Engineering

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

Maximize Rear-End Strength in Your 1968-1981 GM A-Body & F-Body with Moser Engineering 30 Spline 12-Bolt Axles

For those pushing the limits of their 1968-1981 GM A-Body or F-Body, a robust drivetrain is non-negotiable. The Moser Engineering 30 Spline 12-Bolt C-Clip Axle Shaft Pair (A123003) is specifically engineered to provide unparalleled strength and reliability for vehicles equipped with a GM 12-Bolt rear end. This axle set is a vital upgrade for high-horsepower builds, competitive racing, or any application where maximum durability and consistent power delivery are paramount. Fortify your classic's rear end against the most extreme loads.

Engineered for Uncompromising Durability

Moser Engineering is a trusted name in high-performance automotive components, and this axle shaft pair exemplifies their commitment to superior quality. Each axle is expertly crafted from a proprietary high-strength steel alloy, then subjected to an advanced heat-treating process to significantly enhance its resistance to bending, twisting, and fatigue. The natural finish highlights the precision engineering, while the meticulous manufacturing ensures a flawless, direct-fit installation. This pair is designed to endure the most rigorous demands, offering peace of mind even under severe stress.

  • Heavy-Duty Spline Count: Features a 30-spline carrier for maximum strength and optimal power transfer.
  • GM 12-Bolt Compatibility: Specifically designed for seamless integration with GM 12-Bolt rear differentials.
  • Premium Alloy Steel: Constructed from an advanced alloy steel for exceptional strength and longevity.
  • Secure C-clip Design: Utilizes a robust C-clip retention system for confident and reliable axle placement.
  • Complete Axle Set: Provided as a pair, offering a comprehensive solution for your rear-end upgrade.

Specific Fitment for High-Performance Classics

This Moser Engineering 30 Spline 12-Bolt C-Clip Axle Shaft Pair is precisely engineered for 1968-1981 GM A-Body and F-Body vehicles that are equipped with a GM 12-Bolt rear differential. Each axle measures 30.063 inches in length and features a standard 5 x 4.75-inch bolt pattern. This exact fitment ensures proper drivetrain geometry, optimal wheel alignment, and consistent performance, making it an essential upgrade for any serious performance build or restoration.

The Ultimate Choice for Extreme Applications

Opting for Moser Engineering axles means choosing components that are built to perform under pressure. These axle shafts are crucial for preventing catastrophic rear-end failures, especially in vehicles with significant horsepower increases or those subjected to aggressive driving conditions. By upgrading to this high-strength pair, you ensure reliable power delivery, enhance overall vehicle safety, and gain the confidence to push your A-Body or F-Body to its absolute limits. For the most critical drivetrain components, trust GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Moser Engineering

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

Maximize Rear-End Strength in Your 1968-1981 GM A-Body & F-Body with Moser Engineering 30 Spline 12-Bolt Axles

For those pushing the limits of their 1968-1981 GM A-Body or F-Body, a robust drivetrain is non-negotiable. The Moser Engineering 30 Spline 12-Bolt C-Clip Axle Shaft Pair (A123003) is specifically engineered to provide unparalleled strength and reliability for vehicles equipped with a GM 12-Bolt rear end. This axle set is a vital upgrade for high-horsepower builds, competitive racing, or any application where maximum durability and consistent power delivery are paramount. Fortify your classic's rear end against the most extreme loads.

Engineered for Uncompromising Durability

Moser Engineering is a trusted name in high-performance automotive components, and this axle shaft pair exemplifies their commitment to superior quality. Each axle is expertly crafted from a proprietary high-strength steel alloy, then subjected to an advanced heat-treating process to significantly enhance its resistance to bending, twisting, and fatigue. The natural finish highlights the precision engineering, while the meticulous manufacturing ensures a flawless, direct-fit installation. This pair is designed to endure the most rigorous demands, offering peace of mind even under severe stress.

  • Heavy-Duty Spline Count: Features a 30-spline carrier for maximum strength and optimal power transfer.
  • GM 12-Bolt Compatibility: Specifically designed for seamless integration with GM 12-Bolt rear differentials.
  • Premium Alloy Steel: Constructed from an advanced alloy steel for exceptional strength and longevity.
  • Secure C-clip Design: Utilizes a robust C-clip retention system for confident and reliable axle placement.
  • Complete Axle Set: Provided as a pair, offering a comprehensive solution for your rear-end upgrade.

Specific Fitment for High-Performance Classics

This Moser Engineering 30 Spline 12-Bolt C-Clip Axle Shaft Pair is precisely engineered for 1968-1981 GM A-Body and F-Body vehicles that are equipped with a GM 12-Bolt rear differential. Each axle measures 30.063 inches in length and features a standard 5 x 4.75-inch bolt pattern. This exact fitment ensures proper drivetrain geometry, optimal wheel alignment, and consistent performance, making it an essential upgrade for any serious performance build or restoration.

The Ultimate Choice for Extreme Applications

Opting for Moser Engineering axles means choosing components that are built to perform under pressure. These axle shafts are crucial for preventing catastrophic rear-end failures, especially in vehicles with significant horsepower increases or those subjected to aggressive driving conditions. By upgrading to this high-strength pair, you ensure reliable power delivery, enhance overall vehicle safety, and gain the confidence to push your A-Body or F-Body to its absolute limits. For the most critical drivetrain components, trust GGCRACING.

Product Details

Product Description

About Moser Engineering

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

Maximize Rear-End Strength in Your 1968-1981 GM A-Body & F-Body with Moser Engineering 30 Spline 12-Bolt Axles

For those pushing the limits of their 1968-1981 GM A-Body or F-Body, a robust drivetrain is non-negotiable. The Moser Engineering 30 Spline 12-Bolt C-Clip Axle Shaft Pair (A123003) is specifically engineered to provide unparalleled strength and reliability for vehicles equipped with a GM 12-Bolt rear end. This axle set is a vital upgrade for high-horsepower builds, competitive racing, or any application where maximum durability and consistent power delivery are paramount. Fortify your classic's rear end against the most extreme loads.

Engineered for Uncompromising Durability

Moser Engineering is a trusted name in high-performance automotive components, and this axle shaft pair exemplifies their commitment to superior quality. Each axle is expertly crafted from a proprietary high-strength steel alloy, then subjected to an advanced heat-treating process to significantly enhance its resistance to bending, twisting, and fatigue. The natural finish highlights the precision engineering, while the meticulous manufacturing ensures a flawless, direct-fit installation. This pair is designed to endure the most rigorous demands, offering peace of mind even under severe stress.

  • Heavy-Duty Spline Count: Features a 30-spline carrier for maximum strength and optimal power transfer.
  • GM 12-Bolt Compatibility: Specifically designed for seamless integration with GM 12-Bolt rear differentials.
  • Premium Alloy Steel: Constructed from an advanced alloy steel for exceptional strength and longevity.
  • Secure C-clip Design: Utilizes a robust C-clip retention system for confident and reliable axle placement.
  • Complete Axle Set: Provided as a pair, offering a comprehensive solution for your rear-end upgrade.

Specific Fitment for High-Performance Classics

This Moser Engineering 30 Spline 12-Bolt C-Clip Axle Shaft Pair is precisely engineered for 1968-1981 GM A-Body and F-Body vehicles that are equipped with a GM 12-Bolt rear differential. Each axle measures 30.063 inches in length and features a standard 5 x 4.75-inch bolt pattern. This exact fitment ensures proper drivetrain geometry, optimal wheel alignment, and consistent performance, making it an essential upgrade for any serious performance build or restoration.

The Ultimate Choice for Extreme Applications

Opting for Moser Engineering axles means choosing components that are built to perform under pressure. These axle shafts are crucial for preventing catastrophic rear-end failures, especially in vehicles with significant horsepower increases or those subjected to aggressive driving conditions. By upgrading to this high-strength pair, you ensure reliable power delivery, enhance overall vehicle safety, and gain the confidence to push your A-Body or F-Body to its absolute limits. For the most critical drivetrain components, trust GGCRACING.

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