Auto Racing Products Chromoly Black Oxide Flat Washers - 12mm ID x 7/8" OD (10-Pack)

SKU: BQDN_200-8537
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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 Auto Racing Products

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.

ARP Metric Chromoly Black Oxide Flat Washers

Optimize your metric fastening systems with Auto Racing Products (ARP) Special Purpose Flat Washers. This 10-piece set is specifically designed for applications requiring a 12mm inner diameter, offering the same legendary ARP strength and durability in a metric size. Crafted from premium chromoly steel, these washers provide superior load distribution and resist deformation, making them indispensable for high-performance automotive and racing projects where metric fasteners are prevalent.

Precision for Metric Applications

Each washer is meticulously engineered to ensure a precise fit for 12mm bolts, preventing play and enhancing the security of your bolted joints. The robust chromoly construction ensures these washers can withstand extreme stresses, vibrations, and temperature fluctuations without compromising integrity. Finished with a resilient black oxide coating, they offer excellent protection against corrosion and wear, maintaining their performance and appearance over time.

  • Material: High-Grade Chromoly Steel
  • Finish: Protective Black Oxide Coating
  • Inner Diameter (ID): 12 mm
  • Outer Diameter (OD): 0.875 inches (7/8")
  • Thickness: 0.12 inches
  • Quantity: Set of 10 Washers
  • Application: Metric Automotive & Racing

The ARP Standard of Excellence

ARP is synonymous with uncompromising quality in the world of high-performance automotive components. These 12mm chromoly flat washers uphold that reputation, providing the critical support needed for reliable and secure assemblies. Whether you're building an engine, chassis, or suspension, trust ARP to deliver the strength and precision your project demands. Find these specialized metric washers and other top-tier ARP products at GGCRACING.COM.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Auto Racing Products

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.

ARP Metric Chromoly Black Oxide Flat Washers

Optimize your metric fastening systems with Auto Racing Products (ARP) Special Purpose Flat Washers. This 10-piece set is specifically designed for applications requiring a 12mm inner diameter, offering the same legendary ARP strength and durability in a metric size. Crafted from premium chromoly steel, these washers provide superior load distribution and resist deformation, making them indispensable for high-performance automotive and racing projects where metric fasteners are prevalent.

Precision for Metric Applications

Each washer is meticulously engineered to ensure a precise fit for 12mm bolts, preventing play and enhancing the security of your bolted joints. The robust chromoly construction ensures these washers can withstand extreme stresses, vibrations, and temperature fluctuations without compromising integrity. Finished with a resilient black oxide coating, they offer excellent protection against corrosion and wear, maintaining their performance and appearance over time.

  • Material: High-Grade Chromoly Steel
  • Finish: Protective Black Oxide Coating
  • Inner Diameter (ID): 12 mm
  • Outer Diameter (OD): 0.875 inches (7/8")
  • Thickness: 0.12 inches
  • Quantity: Set of 10 Washers
  • Application: Metric Automotive & Racing

The ARP Standard of Excellence

ARP is synonymous with uncompromising quality in the world of high-performance automotive components. These 12mm chromoly flat washers uphold that reputation, providing the critical support needed for reliable and secure assemblies. Whether you're building an engine, chassis, or suspension, trust ARP to deliver the strength and precision your project demands. Find these specialized metric washers and other top-tier ARP products at GGCRACING.COM.

Product Details

Product Description

About Auto Racing Products

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.

ARP Metric Chromoly Black Oxide Flat Washers

Optimize your metric fastening systems with Auto Racing Products (ARP) Special Purpose Flat Washers. This 10-piece set is specifically designed for applications requiring a 12mm inner diameter, offering the same legendary ARP strength and durability in a metric size. Crafted from premium chromoly steel, these washers provide superior load distribution and resist deformation, making them indispensable for high-performance automotive and racing projects where metric fasteners are prevalent.

Precision for Metric Applications

Each washer is meticulously engineered to ensure a precise fit for 12mm bolts, preventing play and enhancing the security of your bolted joints. The robust chromoly construction ensures these washers can withstand extreme stresses, vibrations, and temperature fluctuations without compromising integrity. Finished with a resilient black oxide coating, they offer excellent protection against corrosion and wear, maintaining their performance and appearance over time.

  • Material: High-Grade Chromoly Steel
  • Finish: Protective Black Oxide Coating
  • Inner Diameter (ID): 12 mm
  • Outer Diameter (OD): 0.875 inches (7/8")
  • Thickness: 0.12 inches
  • Quantity: Set of 10 Washers
  • Application: Metric Automotive & Racing

The ARP Standard of Excellence

ARP is synonymous with uncompromising quality in the world of high-performance automotive components. These 12mm chromoly flat washers uphold that reputation, providing the critical support needed for reliable and secure assemblies. Whether you're building an engine, chassis, or suspension, trust ARP to deliver the strength and precision your project demands. Find these specialized metric washers and other top-tier ARP products at GGCRACING.COM.

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