ARP 251-4701 Head Stud Kit for 1985-1992 Ford Sierra RS Cosworth 2.0L Turbo

Vehicle Fitment

• 1985-1992 Ford Sierra RS Cosworth (2.0L I4 Turbo, AWD)

Features

• Manufactured from premium 8740 chrome moly steel
• Heat-treated to 190,000 psi tensile strength for enhanced durability
• Undercut design to equalize stud stretch and improve clamping force
• 12-point nuts for precise torque application
• Black oxide finish for corrosion resistance
• Cold-forged to ensure molecular integrity
• Thread rolled after heat treatment for improved fatigue resistance
• Designed for high-performance applications

Specifications

• Material: 8740 chrome moly steel
• Tensile Strength: 190,000 psi
• Finish: Black oxide
• Stud Design: Undercut
• Nut Style: 12-point
• Includes: 10x head studs, 10x 12-point nuts, 10x hardened parallel washers
• Note: Designed specifically for Ford Sierra RS Cosworth 2.0L Turbo engines

Included Components

• 10x head studs
• 10x 12-point nuts
• 10x hardened parallel washers
• ARP Ultra-Torque fastener assembly lubricant

Product Description

The ARP 251-4701 Head Stud Kit is engineered to provide superior clamping force and prevent head gasket failure in high-performance 2.0L Turbo engines. Constructed from premium 8740 chrome moly steel and heat-treated to 190,000 psi tensile strength, these studs offer exceptional durability and reliability. The undercut design equalizes stud stretch, ensuring consistent clamping force and improved sealing.

This kit includes all necessary hardware for installation, including studs, nuts, washers, and ARP's Ultra-Torque assembly lubricant. Ideal for applications exceeding 300 horsepower, the ARP 251-4701 is a direct-fit replacement for stock head bolts and fits 1985-1992 Ford Sierra RS Cosworth 2.0L Turbo engines. It ensures long-lasting durability and proper head clamping for street performance or competition builds.