ARP M9 x 1.25 12-Point Nut — High-Strength Engine Fastener

SKU: ARP300-8342
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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.

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Reliable ARP M9 x 1.25 12-Point Hardware

The ARP M9 x 1.25 12-point nut is a critical component for engine builders who demand precision and durability. Engineered to exceed OEM specifications, this fastener is built to handle the intense pressures found in modified engines. The 12-point head design is specifically chosen for its ability to be torqued in tight engine bays where a standard socket might not fit.

Key Technical Advantages

  • Precision Threading: M9 x 1.25 pitch ensures a perfect fit for compatible studs and bolts.
  • 12-Point Design: Reduces the risk of rounding off the nut during high-torque installation.
  • High-Tensile Alloy: Constructed from heat-treated materials to prevent fastener failure under load.
  • Versatile Application: Ideal for various engine internal and external mounting points.

Using high-quality hardware is the difference between a successful race day and a catastrophic engine failure. ARP is the gold standard in the motorsports industry, providing the reliability that professional mechanics and enthusiasts trust. This single nut is perfect for replacing worn hardware or completing custom fabrication projects where specific M9 sizing is required. By utilizing a 12-point design, you gain better access and more consistent torque readings, which are vital for maintaining proper clamping force on critical engine components. Ensure your next build is bulletproof with premium components from 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

Reliable ARP M9 x 1.25 12-Point Hardware

The ARP M9 x 1.25 12-point nut is a critical component for engine builders who demand precision and durability. Engineered to exceed OEM specifications, this fastener is built to handle the intense pressures found in modified engines. The 12-point head design is specifically chosen for its ability to be torqued in tight engine bays where a standard socket might not fit.

Key Technical Advantages

  • Precision Threading: M9 x 1.25 pitch ensures a perfect fit for compatible studs and bolts.
  • 12-Point Design: Reduces the risk of rounding off the nut during high-torque installation.
  • High-Tensile Alloy: Constructed from heat-treated materials to prevent fastener failure under load.
  • Versatile Application: Ideal for various engine internal and external mounting points.

Using high-quality hardware is the difference between a successful race day and a catastrophic engine failure. ARP is the gold standard in the motorsports industry, providing the reliability that professional mechanics and enthusiasts trust. This single nut is perfect for replacing worn hardware or completing custom fabrication projects where specific M9 sizing is required. By utilizing a 12-point design, you gain better access and more consistent torque readings, which are vital for maintaining proper clamping force on critical engine components. Ensure your next build is bulletproof with premium components from 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

Reliable ARP M9 x 1.25 12-Point Hardware

The ARP M9 x 1.25 12-point nut is a critical component for engine builders who demand precision and durability. Engineered to exceed OEM specifications, this fastener is built to handle the intense pressures found in modified engines. The 12-point head design is specifically chosen for its ability to be torqued in tight engine bays where a standard socket might not fit.

Key Technical Advantages

  • Precision Threading: M9 x 1.25 pitch ensures a perfect fit for compatible studs and bolts.
  • 12-Point Design: Reduces the risk of rounding off the nut during high-torque installation.
  • High-Tensile Alloy: Constructed from heat-treated materials to prevent fastener failure under load.
  • Versatile Application: Ideal for various engine internal and external mounting points.

Using high-quality hardware is the difference between a successful race day and a catastrophic engine failure. ARP is the gold standard in the motorsports industry, providing the reliability that professional mechanics and enthusiasts trust. This single nut is perfect for replacing worn hardware or completing custom fabrication projects where specific M9 sizing is required. By utilizing a 12-point design, you gain better access and more consistent torque readings, which are vital for maintaining proper clamping force on critical engine components. Ensure your next build is bulletproof with premium components from GGCRACING.

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