ARP M12x1.25 Replacement 12pt Nut — Universal Performance Hardware

SKU: ARPAUN12-2
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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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Genuine ARP M12x1.25 12-Point Replacement Nut

Maintain the integrity of your engine's fastener system with this genuine ARP M12x1.25 12-point replacement nut. Designed for high-performance applications, these nuts are forged from premium-grade alloy steel to provide exceptional tensile strength and durability. The 12-point design allows for easier access in tight engine bays and ensures a secure fit that resists loosening under extreme vibration and heat.

Why Choose ARP Replacement Hardware?

  • Thread Size: M12x1.25
  • Head Style: 12-Point
  • Material: High-strength heat-treated alloy
  • Application: Universal fitment for M12x1.25 studs
  • Finish: Corrosion-resistant

Using improper or worn-out nuts can lead to uneven clamping force, resulting in gasket failure or structural damage to your engine. These ARP nuts are engineered to work seamlessly with ARP studs, providing a consistent torque profile that ensures your engine components are held together with maximum precision. Whether you are performing a routine rebuild or a full-scale engine upgrade, replacing your fasteners with authentic ARP components is a critical step in ensuring long-term reliability. Don't compromise on the safety of your engine; rely on the proven strength of ARP hardware. Explore our full catalog of performance fasteners 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

Genuine ARP M12x1.25 12-Point Replacement Nut

Maintain the integrity of your engine's fastener system with this genuine ARP M12x1.25 12-point replacement nut. Designed for high-performance applications, these nuts are forged from premium-grade alloy steel to provide exceptional tensile strength and durability. The 12-point design allows for easier access in tight engine bays and ensures a secure fit that resists loosening under extreme vibration and heat.

Why Choose ARP Replacement Hardware?

  • Thread Size: M12x1.25
  • Head Style: 12-Point
  • Material: High-strength heat-treated alloy
  • Application: Universal fitment for M12x1.25 studs
  • Finish: Corrosion-resistant

Using improper or worn-out nuts can lead to uneven clamping force, resulting in gasket failure or structural damage to your engine. These ARP nuts are engineered to work seamlessly with ARP studs, providing a consistent torque profile that ensures your engine components are held together with maximum precision. Whether you are performing a routine rebuild or a full-scale engine upgrade, replacing your fasteners with authentic ARP components is a critical step in ensuring long-term reliability. Don't compromise on the safety of your engine; rely on the proven strength of ARP hardware. Explore our full catalog of performance fasteners 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

Genuine ARP M12x1.25 12-Point Replacement Nut

Maintain the integrity of your engine's fastener system with this genuine ARP M12x1.25 12-point replacement nut. Designed for high-performance applications, these nuts are forged from premium-grade alloy steel to provide exceptional tensile strength and durability. The 12-point design allows for easier access in tight engine bays and ensures a secure fit that resists loosening under extreme vibration and heat.

Why Choose ARP Replacement Hardware?

  • Thread Size: M12x1.25
  • Head Style: 12-Point
  • Material: High-strength heat-treated alloy
  • Application: Universal fitment for M12x1.25 studs
  • Finish: Corrosion-resistant

Using improper or worn-out nuts can lead to uneven clamping force, resulting in gasket failure or structural damage to your engine. These ARP nuts are engineered to work seamlessly with ARP studs, providing a consistent torque profile that ensures your engine components are held together with maximum precision. Whether you are performing a routine rebuild or a full-scale engine upgrade, replacing your fasteners with authentic ARP components is a critical step in ensuring long-term reliability. Don't compromise on the safety of your engine; rely on the proven strength of ARP hardware. Explore our full catalog of performance fasteners at GGCRACING.

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