Auto Racing Products 12-Point Chromoly Bolt Kit — 5/16-18 x 2.250 Universal Fasteners

SKU: BQDN_641-2250
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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.

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High-Performance 12-Point Chromoly Bolts

Upgrade your vehicle's hardware with the reliability of Auto Racing Products 12-point bolts. Measuring 5/16-18 x 2.250 inches, these fasteners are built to provide superior clamping force and structural integrity. The 12-point head design is a hallmark of professional racing, allowing for precise torque application and better clearance in restricted spaces compared to traditional hex-head bolts.

Technical Specifications

  • Thread Size: 5/16-18
  • Under-Head Length: 2.250 inches
  • Head Style: 3/8-inch 12-Point
  • Material: Heat-Treated Chromoly
  • Finish: Black Oxide
  • Quantity: 5-Pack

These bolts are crafted from premium chromoly steel, ensuring they maintain their shape and hold under extreme thermal and mechanical stress. The black oxide finish adds a layer of protection against corrosion, making them suitable for both street and track use. Perfect for securing intake manifolds, valve covers, or custom brackets, these bolts offer the peace of mind that comes with using top-tier racing components. Don't settle for inferior hardware that can fail under pressure; invest in the strength and durability of these professional-grade fasteners. Browse our full selection of specialized racing hardware and performance parts 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.

Watch in action

High-Performance 12-Point Chromoly Bolts

Upgrade your vehicle's hardware with the reliability of Auto Racing Products 12-point bolts. Measuring 5/16-18 x 2.250 inches, these fasteners are built to provide superior clamping force and structural integrity. The 12-point head design is a hallmark of professional racing, allowing for precise torque application and better clearance in restricted spaces compared to traditional hex-head bolts.

Technical Specifications

  • Thread Size: 5/16-18
  • Under-Head Length: 2.250 inches
  • Head Style: 3/8-inch 12-Point
  • Material: Heat-Treated Chromoly
  • Finish: Black Oxide
  • Quantity: 5-Pack

These bolts are crafted from premium chromoly steel, ensuring they maintain their shape and hold under extreme thermal and mechanical stress. The black oxide finish adds a layer of protection against corrosion, making them suitable for both street and track use. Perfect for securing intake manifolds, valve covers, or custom brackets, these bolts offer the peace of mind that comes with using top-tier racing components. Don't settle for inferior hardware that can fail under pressure; invest in the strength and durability of these professional-grade fasteners. Browse our full selection of specialized racing hardware and performance parts 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.

Watch in action

High-Performance 12-Point Chromoly Bolts

Upgrade your vehicle's hardware with the reliability of Auto Racing Products 12-point bolts. Measuring 5/16-18 x 2.250 inches, these fasteners are built to provide superior clamping force and structural integrity. The 12-point head design is a hallmark of professional racing, allowing for precise torque application and better clearance in restricted spaces compared to traditional hex-head bolts.

Technical Specifications

  • Thread Size: 5/16-18
  • Under-Head Length: 2.250 inches
  • Head Style: 3/8-inch 12-Point
  • Material: Heat-Treated Chromoly
  • Finish: Black Oxide
  • Quantity: 5-Pack

These bolts are crafted from premium chromoly steel, ensuring they maintain their shape and hold under extreme thermal and mechanical stress. The black oxide finish adds a layer of protection against corrosion, making them suitable for both street and track use. Perfect for securing intake manifolds, valve covers, or custom brackets, these bolts offer the peace of mind that comes with using top-tier racing components. Don't settle for inferior hardware that can fail under pressure; invest in the strength and durability of these professional-grade fasteners. Browse our full selection of specialized racing hardware and performance parts at GGCRACING.

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