Quarter Master Crank Bolt Kit 7/16-20 12-Point Chromoly — Fits SBC Late 6-Bolt Crank

SKU: BJGP_505012
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High-Strength Crankshaft Security for SBC EnginesEnsure your Small Block Chevy ...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

High-Strength Crankshaft Security for SBC Engines

Ensure your Small Block Chevy engine remains rock-solid under high-RPM stress with the Quarter Master Crank Bolt Kit. Engineered for late-model SBC applications featuring a 6-bolt crank, this kit provides the clamping force necessary to prevent harmonic balancer or flywheel walk. Crafted from premium-grade chromoly steel, these bolts are designed to withstand extreme torque loads while maintaining structural integrity during competitive racing conditions.

Key Features and Specifications

  • Thread Size: 7/16-20
  • Length: 1.200 inches
  • Head Style: 12-Point for superior wrench access
  • Material: High-tensile strength chromoly steel
  • Finish: Durable black oxide coating
  • Application: Late-model Small Block Chevy 6-bolt crankshafts
  • Quantity: Set of 6 bolts

Whether you are building a dedicated drag racer or a high-performance street machine, these fasteners offer the peace of mind that only professional-grade components can provide. The 12-point head design allows for more precise torque application compared to standard hex heads, ensuring your rotating assembly stays perfectly balanced and secure. Don't compromise your engine build with inferior hardware; choose the reliability of Quarter Master components available at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

High-Strength Crankshaft Security for SBC Engines

Ensure your Small Block Chevy engine remains rock-solid under high-RPM stress with the Quarter Master Crank Bolt Kit. Engineered for late-model SBC applications featuring a 6-bolt crank, this kit provides the clamping force necessary to prevent harmonic balancer or flywheel walk. Crafted from premium-grade chromoly steel, these bolts are designed to withstand extreme torque loads while maintaining structural integrity during competitive racing conditions.

Key Features and Specifications

  • Thread Size: 7/16-20
  • Length: 1.200 inches
  • Head Style: 12-Point for superior wrench access
  • Material: High-tensile strength chromoly steel
  • Finish: Durable black oxide coating
  • Application: Late-model Small Block Chevy 6-bolt crankshafts
  • Quantity: Set of 6 bolts

Whether you are building a dedicated drag racer or a high-performance street machine, these fasteners offer the peace of mind that only professional-grade components can provide. The 12-point head design allows for more precise torque application compared to standard hex heads, ensuring your rotating assembly stays perfectly balanced and secure. Don't compromise your engine build with inferior hardware; choose the reliability of Quarter Master components available at GGCRACING.

Product Details

Product Description

High-Strength Crankshaft Security for SBC Engines

Ensure your Small Block Chevy engine remains rock-solid under high-RPM stress with the Quarter Master Crank Bolt Kit. Engineered for late-model SBC applications featuring a 6-bolt crank, this kit provides the clamping force necessary to prevent harmonic balancer or flywheel walk. Crafted from premium-grade chromoly steel, these bolts are designed to withstand extreme torque loads while maintaining structural integrity during competitive racing conditions.

Key Features and Specifications

  • Thread Size: 7/16-20
  • Length: 1.200 inches
  • Head Style: 12-Point for superior wrench access
  • Material: High-tensile strength chromoly steel
  • Finish: Durable black oxide coating
  • Application: Late-model Small Block Chevy 6-bolt crankshafts
  • Quantity: Set of 6 bolts

Whether you are building a dedicated drag racer or a high-performance street machine, these fasteners offer the peace of mind that only professional-grade components can provide. The 12-point head design allows for more precise torque application compared to standard hex heads, ensuring your rotating assembly stays perfectly balanced and secure. Don't compromise your engine build with inferior hardware; choose the reliability of Quarter Master components available at GGCRACING.

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