ARP Ford Cosworth Sierra/Escort Pro Series Head Stud Kit — Fits 1986-1996 Ford Cosworth YB

SKU: ARP251-4701
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About ARP ARP (Automotive Racing Products) makes the strongest fasteners ...Read More

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Sale price$170.99
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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.

Watch in action

Ultimate Reliability for Your Cosworth YB Engine

When pushing your Ford Cosworth Sierra or Escort to the limit, head gasket failure is not an option. The ARP 251-4701 Head Stud Kit is engineered to provide superior clamping force, ensuring your cylinder head stays perfectly seated under high boost and extreme combustion pressures. Manufactured from premium 8740 chromoly steel, these studs are heat-treated and precision-machined to exceed OEM specifications.

Technical Specifications and Benefits

  • Material: High-strength 8740 chromoly steel
  • Design: Pro Series head studs with reduced head diameter for easier access
  • Precision: Threads rolled after heat treatment for maximum fatigue strength
  • Compatibility: Direct fit for Ford Cosworth YB engines
  • Includes: High-quality nuts and hardened parallel washers

By replacing factory head bolts with these ARP studs, you eliminate the risk of bolt stretch and gasket lift common in high-performance builds. Whether you are running a stock turbo or a high-output track setup, these studs provide the structural integrity your engine block requires. Every kit is thoroughly inspected to ensure consistent torque readings and long-term durability. Trust your engine build to the industry leader in fastener technology. Upgrade your performance today with this essential component 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

Ultimate Reliability for Your Cosworth YB Engine

When pushing your Ford Cosworth Sierra or Escort to the limit, head gasket failure is not an option. The ARP 251-4701 Head Stud Kit is engineered to provide superior clamping force, ensuring your cylinder head stays perfectly seated under high boost and extreme combustion pressures. Manufactured from premium 8740 chromoly steel, these studs are heat-treated and precision-machined to exceed OEM specifications.

Technical Specifications and Benefits

  • Material: High-strength 8740 chromoly steel
  • Design: Pro Series head studs with reduced head diameter for easier access
  • Precision: Threads rolled after heat treatment for maximum fatigue strength
  • Compatibility: Direct fit for Ford Cosworth YB engines
  • Includes: High-quality nuts and hardened parallel washers

By replacing factory head bolts with these ARP studs, you eliminate the risk of bolt stretch and gasket lift common in high-performance builds. Whether you are running a stock turbo or a high-output track setup, these studs provide the structural integrity your engine block requires. Every kit is thoroughly inspected to ensure consistent torque readings and long-term durability. Trust your engine build to the industry leader in fastener technology. Upgrade your performance today with this essential component 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

Ultimate Reliability for Your Cosworth YB Engine

When pushing your Ford Cosworth Sierra or Escort to the limit, head gasket failure is not an option. The ARP 251-4701 Head Stud Kit is engineered to provide superior clamping force, ensuring your cylinder head stays perfectly seated under high boost and extreme combustion pressures. Manufactured from premium 8740 chromoly steel, these studs are heat-treated and precision-machined to exceed OEM specifications.

Technical Specifications and Benefits

  • Material: High-strength 8740 chromoly steel
  • Design: Pro Series head studs with reduced head diameter for easier access
  • Precision: Threads rolled after heat treatment for maximum fatigue strength
  • Compatibility: Direct fit for Ford Cosworth YB engines
  • Includes: High-quality nuts and hardened parallel washers

By replacing factory head bolts with these ARP studs, you eliminate the risk of bolt stretch and gasket lift common in high-performance builds. Whether you are running a stock turbo or a high-output track setup, these studs provide the structural integrity your engine block requires. Every kit is thoroughly inspected to ensure consistent torque readings and long-term durability. Trust your engine build to the industry leader in fastener technology. Upgrade your performance today with this essential component from GGCRACING.

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