ARP 3/8-16 12-Point Nut Kit High-Strength Steel — Universal Engine Hardware

SKU: ARP301-8341
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About ARP ARP (Automotive Racing Products) makes the strongest fasteners ...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 ARP

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

Premium Engine Hardware Solutions

Ensure your engine build is secured with the industry-leading ARP 3/8-16 12-point nut kit. Engineered for high-performance applications, these nuts provide superior clamping force and reliability compared to standard hardware. Whether you are performing a top-end rebuild or custom fabrication, ARP delivers the consistency required for professional-grade results.

Key Features and Benefits

  • High-strength steel construction for maximum durability
  • 12-point design allows for easier access in tight engine bays
  • Precision-machined threads for a perfect fit
  • Pack of 10 nuts to cover common engine assembly needs
  • Ideal for high-vibration and high-heat environments

When building an engine, hardware integrity is non-negotiable. These 3/8-16 nuts are designed to withstand the rigors of racing and high-performance street driving, preventing loosening and ensuring your components stay properly torqued under load. The 12-point head profile is specifically chosen to facilitate easier installation in cramped spaces where a standard hex head might be difficult to reach with a socket. Trust in the engineering excellence that makes ARP the gold standard for automotive fasteners. For all your high-performance engine hardware needs, rely on the experts at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About ARP

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

Premium Engine Hardware Solutions

Ensure your engine build is secured with the industry-leading ARP 3/8-16 12-point nut kit. Engineered for high-performance applications, these nuts provide superior clamping force and reliability compared to standard hardware. Whether you are performing a top-end rebuild or custom fabrication, ARP delivers the consistency required for professional-grade results.

Key Features and Benefits

  • High-strength steel construction for maximum durability
  • 12-point design allows for easier access in tight engine bays
  • Precision-machined threads for a perfect fit
  • Pack of 10 nuts to cover common engine assembly needs
  • Ideal for high-vibration and high-heat environments

When building an engine, hardware integrity is non-negotiable. These 3/8-16 nuts are designed to withstand the rigors of racing and high-performance street driving, preventing loosening and ensuring your components stay properly torqued under load. The 12-point head profile is specifically chosen to facilitate easier installation in cramped spaces where a standard hex head might be difficult to reach with a socket. Trust in the engineering excellence that makes ARP the gold standard for automotive fasteners. For all your high-performance engine hardware needs, rely on the experts at GGCRACING.

Product Details

Product Description

About ARP

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

Premium Engine Hardware Solutions

Ensure your engine build is secured with the industry-leading ARP 3/8-16 12-point nut kit. Engineered for high-performance applications, these nuts provide superior clamping force and reliability compared to standard hardware. Whether you are performing a top-end rebuild or custom fabrication, ARP delivers the consistency required for professional-grade results.

Key Features and Benefits

  • High-strength steel construction for maximum durability
  • 12-point design allows for easier access in tight engine bays
  • Precision-machined threads for a perfect fit
  • Pack of 10 nuts to cover common engine assembly needs
  • Ideal for high-vibration and high-heat environments

When building an engine, hardware integrity is non-negotiable. These 3/8-16 nuts are designed to withstand the rigors of racing and high-performance street driving, preventing loosening and ensuring your components stay properly torqued under load. The 12-point head profile is specifically chosen to facilitate easier installation in cramped spaces where a standard hex head might be difficult to reach with a socket. Trust in the engineering excellence that makes ARP the gold standard for automotive fasteners. For all your high-performance engine hardware needs, rely on the experts at GGCRACING.

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