ARP 3/8 x 1.25in Oval Stud with Broach — Professional Engine Hardware

SKU: ARPAJ1.250-5B
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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.

Precision-Engineered Oval Studs

The ARP 3/8 x 1.25in Oval Stud with Broach is designed for builders who demand exact specifications and maximum durability. ARP is the global leader in fastener technology, and this stud is no exception, providing the strength required for critical engine applications where standard hardware simply won't suffice.

Why Choose ARP Studs?

  • High-Grade Alloy: Manufactured from premium materials for exceptional fatigue resistance.
  • Broached Tip: Allows for easy installation and removal using standard hex tools.
  • Precision Dimensions: Consistent 1.25-inch overall length for uniform fitment.
  • Reliability: Designed to withstand vibration and thermal cycling without loosening.

In high-performance engines, every component must work in harmony. Using high-quality studs ensures that your components stay secured under the most demanding conditions, from high-RPM track sessions to heavy-duty street use. The inclusion of a broach makes installation straightforward, allowing you to seat the stud perfectly in the block or component housing. Don't risk your engine build with inferior hardware; choose the brand that has set the standard for decades. Whether you are a professional engine builder or a dedicated enthusiast, you can find the right hardware for your project 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.

Precision-Engineered Oval Studs

The ARP 3/8 x 1.25in Oval Stud with Broach is designed for builders who demand exact specifications and maximum durability. ARP is the global leader in fastener technology, and this stud is no exception, providing the strength required for critical engine applications where standard hardware simply won't suffice.

Why Choose ARP Studs?

  • High-Grade Alloy: Manufactured from premium materials for exceptional fatigue resistance.
  • Broached Tip: Allows for easy installation and removal using standard hex tools.
  • Precision Dimensions: Consistent 1.25-inch overall length for uniform fitment.
  • Reliability: Designed to withstand vibration and thermal cycling without loosening.

In high-performance engines, every component must work in harmony. Using high-quality studs ensures that your components stay secured under the most demanding conditions, from high-RPM track sessions to heavy-duty street use. The inclusion of a broach makes installation straightforward, allowing you to seat the stud perfectly in the block or component housing. Don't risk your engine build with inferior hardware; choose the brand that has set the standard for decades. Whether you are a professional engine builder or a dedicated enthusiast, you can find the right hardware for your project 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.

Precision-Engineered Oval Studs

The ARP 3/8 x 1.25in Oval Stud with Broach is designed for builders who demand exact specifications and maximum durability. ARP is the global leader in fastener technology, and this stud is no exception, providing the strength required for critical engine applications where standard hardware simply won't suffice.

Why Choose ARP Studs?

  • High-Grade Alloy: Manufactured from premium materials for exceptional fatigue resistance.
  • Broached Tip: Allows for easy installation and removal using standard hex tools.
  • Precision Dimensions: Consistent 1.25-inch overall length for uniform fitment.
  • Reliability: Designed to withstand vibration and thermal cycling without loosening.

In high-performance engines, every component must work in harmony. Using high-quality studs ensures that your components stay secured under the most demanding conditions, from high-RPM track sessions to heavy-duty street use. The inclusion of a broach makes installation straightforward, allowing you to seat the stud perfectly in the block or component housing. Don't risk your engine build with inferior hardware; choose the brand that has set the standard for decades. Whether you are a professional engine builder or a dedicated enthusiast, you can find the right hardware for your project at GGCRACING.

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