Auto Racing Products Chromoly Bolt Kit 1/4-20 x .515 12-Point — Universal Fitment

SKU: BQDN_640-0515
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About Auto Racing Products ARP (Automotive Racing Products) makes the ...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

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Precision 12-Point Chromoly Bolts for Compact Applications

For small-scale fasteners that don't compromise on strength, the Auto Racing Products 1/4-20 x .515 Chromoly Bolt Kit is the perfect solution. These 12-point bolts are crafted from high-strength chromoly steel, providing significantly higher durability than standard hardware. The black oxide finish ensures resistance to corrosion, making these ideal for valve covers, oil pans, and other small component mounting applications where space is at a premium.

Technical Details

  • Thread Size: 1/4-20
  • Length: 0.515 inches
  • Head Style: 5/16-inch 12-Point
  • Material: Chromoly Steel
  • Finish: Black Oxide
  • Quantity: Set of 5

The 12-point head design is a hallmark of high-performance hardware, allowing for precise torque application even in the tightest engine bay locations. Despite their compact size, these bolts are built to withstand the rigors of racing, ensuring that your critical components remain securely fastened. The black oxide coating provides a clean, low-profile appearance that integrates seamlessly into any engine build. Whether you are working on a custom project or performing routine maintenance, these bolts offer the reliability and professional quality you expect from top-tier racing components. Secure your build with the best hardware available at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Precision 12-Point Chromoly Bolts for Compact Applications

For small-scale fasteners that don't compromise on strength, the Auto Racing Products 1/4-20 x .515 Chromoly Bolt Kit is the perfect solution. These 12-point bolts are crafted from high-strength chromoly steel, providing significantly higher durability than standard hardware. The black oxide finish ensures resistance to corrosion, making these ideal for valve covers, oil pans, and other small component mounting applications where space is at a premium.

Technical Details

  • Thread Size: 1/4-20
  • Length: 0.515 inches
  • Head Style: 5/16-inch 12-Point
  • Material: Chromoly Steel
  • Finish: Black Oxide
  • Quantity: Set of 5

The 12-point head design is a hallmark of high-performance hardware, allowing for precise torque application even in the tightest engine bay locations. Despite their compact size, these bolts are built to withstand the rigors of racing, ensuring that your critical components remain securely fastened. The black oxide coating provides a clean, low-profile appearance that integrates seamlessly into any engine build. Whether you are working on a custom project or performing routine maintenance, these bolts offer the reliability and professional quality you expect from top-tier racing components. Secure your build with the best hardware available at GGCRACING.

Product Details

Product Description

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Precision 12-Point Chromoly Bolts for Compact Applications

For small-scale fasteners that don't compromise on strength, the Auto Racing Products 1/4-20 x .515 Chromoly Bolt Kit is the perfect solution. These 12-point bolts are crafted from high-strength chromoly steel, providing significantly higher durability than standard hardware. The black oxide finish ensures resistance to corrosion, making these ideal for valve covers, oil pans, and other small component mounting applications where space is at a premium.

Technical Details

  • Thread Size: 1/4-20
  • Length: 0.515 inches
  • Head Style: 5/16-inch 12-Point
  • Material: Chromoly Steel
  • Finish: Black Oxide
  • Quantity: Set of 5

The 12-point head design is a hallmark of high-performance hardware, allowing for precise torque application even in the tightest engine bay locations. Despite their compact size, these bolts are built to withstand the rigors of racing, ensuring that your critical components remain securely fastened. The black oxide coating provides a clean, low-profile appearance that integrates seamlessly into any engine build. Whether you are working on a custom project or performing routine maintenance, these bolts offer the reliability and professional quality you expect from top-tier racing components. Secure your build with the best hardware available at GGCRACING.

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