ARP M12 ID .875in OD Hardened Black Washers — Universal Engine Hardware

SKU: ARP200-8551
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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.

Premium ARP M12 Hardened Washers

When it comes to engine assembly, the small parts are just as important as the big ones. These ARP M12 ID .875in OD black washers are engineered to provide the ultimate in clamping security. Made from high-strength steel and finished with a durable black oxide coating, these washers are built to resist corrosion and handle the intense pressures of high-performance racing environments.

Why Choose ARP Washers?

  • Inner Diameter: M12
  • Outer Diameter: .875 inch
  • Finish: Black Oxide
  • Quantity: 10-piece pack
  • High-strength hardened steel construction

Using standard hardware in a performance engine can lead to disastrous results. ARP washers are designed to be perfectly flat, ensuring that your torque wrench readings are accurate every time. This consistency is vital for maintaining the integrity of your engine's seals and gaskets. By choosing these M12 washers, you are ensuring that your fasteners have the support they need to hold up under extreme conditions, whether you're on the track or the street. Don't leave your engine's reliability to chance; use the hardware that professionals trust. Explore the full range of high-performance engine components and hardware solutions available 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.

Premium ARP M12 Hardened Washers

When it comes to engine assembly, the small parts are just as important as the big ones. These ARP M12 ID .875in OD black washers are engineered to provide the ultimate in clamping security. Made from high-strength steel and finished with a durable black oxide coating, these washers are built to resist corrosion and handle the intense pressures of high-performance racing environments.

Why Choose ARP Washers?

  • Inner Diameter: M12
  • Outer Diameter: .875 inch
  • Finish: Black Oxide
  • Quantity: 10-piece pack
  • High-strength hardened steel construction

Using standard hardware in a performance engine can lead to disastrous results. ARP washers are designed to be perfectly flat, ensuring that your torque wrench readings are accurate every time. This consistency is vital for maintaining the integrity of your engine's seals and gaskets. By choosing these M12 washers, you are ensuring that your fasteners have the support they need to hold up under extreme conditions, whether you're on the track or the street. Don't leave your engine's reliability to chance; use the hardware that professionals trust. Explore the full range of high-performance engine components and hardware solutions available 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.

Premium ARP M12 Hardened Washers

When it comes to engine assembly, the small parts are just as important as the big ones. These ARP M12 ID .875in OD black washers are engineered to provide the ultimate in clamping security. Made from high-strength steel and finished with a durable black oxide coating, these washers are built to resist corrosion and handle the intense pressures of high-performance racing environments.

Why Choose ARP Washers?

  • Inner Diameter: M12
  • Outer Diameter: .875 inch
  • Finish: Black Oxide
  • Quantity: 10-piece pack
  • High-strength hardened steel construction

Using standard hardware in a performance engine can lead to disastrous results. ARP washers are designed to be perfectly flat, ensuring that your torque wrench readings are accurate every time. This consistency is vital for maintaining the integrity of your engine's seals and gaskets. By choosing these M12 washers, you are ensuring that your fasteners have the support they need to hold up under extreme conditions, whether you're on the track or the street. Don't leave your engine's reliability to chance; use the hardware that professionals trust. Explore the full range of high-performance engine components and hardware solutions available at GGCRACING.

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