Auto Racing Products 3/8 ID Insert Washer .750 OD — Cylinder Head Bolt Fasteners

SKU: BQDN_200-8572
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About Auto Racing Products ARP (Automotive Racing Products) makes the ...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 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.

Watch in action

Professional-Grade Cylinder Head Insert Washers

Achieve precise alignment and superior clamping force with Auto Racing Products 3/8 ID insert washers. These specialized washers are designed specifically for cylinder head applications, featuring an insert diameter that ensures your head bolts are perfectly centered. By eliminating bolt movement, these washers help maintain consistent head gasket sealing under high-boost or high-compression conditions.

Performance Specifications

  • Inner Diameter: 0.375 inches
  • Outer Diameter: 0.750 inches
  • Insert Outer Diameter: 0.443 inches
  • Material: Heat-Treated Chromoly
  • Finish: Black Oxide
  • Application: Cylinder Head Bolts
  • Quantity: 10-Pack

Constructed from heavy-duty chromoly steel, these washers are built to handle the extreme torque requirements of high-performance racing engines. The black oxide finish provides excellent wear resistance and protection against the harsh environment of the engine block. Using the correct insert washers is vital for preventing bolt head damage and ensuring the longevity of your cylinder head assembly. Don't leave your engine's performance to chance—invest in the best hardware available for your build. Trust the experts at GGCRACING for all your specialized racing fastener requirements.

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.

Watch in action

Professional-Grade Cylinder Head Insert Washers

Achieve precise alignment and superior clamping force with Auto Racing Products 3/8 ID insert washers. These specialized washers are designed specifically for cylinder head applications, featuring an insert diameter that ensures your head bolts are perfectly centered. By eliminating bolt movement, these washers help maintain consistent head gasket sealing under high-boost or high-compression conditions.

Performance Specifications

  • Inner Diameter: 0.375 inches
  • Outer Diameter: 0.750 inches
  • Insert Outer Diameter: 0.443 inches
  • Material: Heat-Treated Chromoly
  • Finish: Black Oxide
  • Application: Cylinder Head Bolts
  • Quantity: 10-Pack

Constructed from heavy-duty chromoly steel, these washers are built to handle the extreme torque requirements of high-performance racing engines. The black oxide finish provides excellent wear resistance and protection against the harsh environment of the engine block. Using the correct insert washers is vital for preventing bolt head damage and ensuring the longevity of your cylinder head assembly. Don't leave your engine's performance to chance—invest in the best hardware available for your build. Trust the experts at GGCRACING for all your specialized racing fastener requirements.

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.

Watch in action

Professional-Grade Cylinder Head Insert Washers

Achieve precise alignment and superior clamping force with Auto Racing Products 3/8 ID insert washers. These specialized washers are designed specifically for cylinder head applications, featuring an insert diameter that ensures your head bolts are perfectly centered. By eliminating bolt movement, these washers help maintain consistent head gasket sealing under high-boost or high-compression conditions.

Performance Specifications

  • Inner Diameter: 0.375 inches
  • Outer Diameter: 0.750 inches
  • Insert Outer Diameter: 0.443 inches
  • Material: Heat-Treated Chromoly
  • Finish: Black Oxide
  • Application: Cylinder Head Bolts
  • Quantity: 10-Pack

Constructed from heavy-duty chromoly steel, these washers are built to handle the extreme torque requirements of high-performance racing engines. The black oxide finish provides excellent wear resistance and protection against the harsh environment of the engine block. Using the correct insert washers is vital for preventing bolt head damage and ensuring the longevity of your cylinder head assembly. Don't leave your engine's performance to chance—invest in the best hardware available for your build. Trust the experts at GGCRACING for all your specialized racing fastener requirements.

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