Auto Racing Products 642-3250 12-Point Chromoly Bolt Kit — 3/8-16 x 3.250" (Set of 5)

SKU: BQDN_642-3250
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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.

Reinforced Reliability: ARP 12-Point Chromoly Bolt Kit

For critical assemblies requiring extended reach and uncompromising strength, the Auto Racing Products (ARP) 642-3250 12-Point Chromoly Bolt Kit delivers. These premium fasteners are engineered to provide exceptional clamping force and resist stretching, making them indispensable for high-performance automotive, marine, and industrial applications. Crafted from superior chromoly steel, each bolt offers an optimal balance of hardness and ductility, ensuring long-term structural integrity.

Precision and Protection in One

This kit includes five 3/8-16 thread bolts, each precisely 3.250 inches in length, providing ample engagement for thicker components or those requiring deeper fastening. The distinguished 12-point head design not only facilitates easier and more secure torque application but also minimizes the risk of tool slippage, crucial in tight or hard-to-reach areas. A durable black oxide finish provides a robust shield against rust and corrosion, preserving the bolt's performance and aesthetic appeal through years of service.

  • Thread Specification: 3/8-16 inches
  • Overall Length: 3.250 inches
  • Head Type: 12-Point
  • Material Composition: Chromoly Steel
  • Surface Treatment: Black Oxide
  • Package Quantity: 5 bolts
  • Compatibility: Universal application for various high-load fastening requirements

Why ARP is the Professional's Choice

ARP is globally recognized for manufacturing fasteners that exceed industry standards. Their chromoly bolts are a testament to their dedication to quality, providing unmatched strength and reliability for critical applications. When you choose ARP, you're not just buying a bolt; you're investing in the proven performance that professionals trust. Explore the full range of ARP solutions 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.

Reinforced Reliability: ARP 12-Point Chromoly Bolt Kit

For critical assemblies requiring extended reach and uncompromising strength, the Auto Racing Products (ARP) 642-3250 12-Point Chromoly Bolt Kit delivers. These premium fasteners are engineered to provide exceptional clamping force and resist stretching, making them indispensable for high-performance automotive, marine, and industrial applications. Crafted from superior chromoly steel, each bolt offers an optimal balance of hardness and ductility, ensuring long-term structural integrity.

Precision and Protection in One

This kit includes five 3/8-16 thread bolts, each precisely 3.250 inches in length, providing ample engagement for thicker components or those requiring deeper fastening. The distinguished 12-point head design not only facilitates easier and more secure torque application but also minimizes the risk of tool slippage, crucial in tight or hard-to-reach areas. A durable black oxide finish provides a robust shield against rust and corrosion, preserving the bolt's performance and aesthetic appeal through years of service.

  • Thread Specification: 3/8-16 inches
  • Overall Length: 3.250 inches
  • Head Type: 12-Point
  • Material Composition: Chromoly Steel
  • Surface Treatment: Black Oxide
  • Package Quantity: 5 bolts
  • Compatibility: Universal application for various high-load fastening requirements

Why ARP is the Professional's Choice

ARP is globally recognized for manufacturing fasteners that exceed industry standards. Their chromoly bolts are a testament to their dedication to quality, providing unmatched strength and reliability for critical applications. When you choose ARP, you're not just buying a bolt; you're investing in the proven performance that professionals trust. Explore the full range of ARP solutions 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.

Reinforced Reliability: ARP 12-Point Chromoly Bolt Kit

For critical assemblies requiring extended reach and uncompromising strength, the Auto Racing Products (ARP) 642-3250 12-Point Chromoly Bolt Kit delivers. These premium fasteners are engineered to provide exceptional clamping force and resist stretching, making them indispensable for high-performance automotive, marine, and industrial applications. Crafted from superior chromoly steel, each bolt offers an optimal balance of hardness and ductility, ensuring long-term structural integrity.

Precision and Protection in One

This kit includes five 3/8-16 thread bolts, each precisely 3.250 inches in length, providing ample engagement for thicker components or those requiring deeper fastening. The distinguished 12-point head design not only facilitates easier and more secure torque application but also minimizes the risk of tool slippage, crucial in tight or hard-to-reach areas. A durable black oxide finish provides a robust shield against rust and corrosion, preserving the bolt's performance and aesthetic appeal through years of service.

  • Thread Specification: 3/8-16 inches
  • Overall Length: 3.250 inches
  • Head Type: 12-Point
  • Material Composition: Chromoly Steel
  • Surface Treatment: Black Oxide
  • Package Quantity: 5 bolts
  • Compatibility: Universal application for various high-load fastening requirements

Why ARP is the Professional's Choice

ARP is globally recognized for manufacturing fasteners that exceed industry standards. Their chromoly bolts are a testament to their dedication to quality, providing unmatched strength and reliability for critical applications. When you choose ARP, you're not just buying a bolt; you're investing in the proven performance that professionals trust. Explore the full range of ARP solutions at GGCRACING.

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