ARP 251-4702 Head Stud Kit for Ford 2.0L Zetec

The ARP 251-4702 head stud kit is engineered specifically for the Ford Focus 2.0L Zetec engine, providing superior cylinder head-to-block sealing for high-performance applications. These premium head studs are essential for engines running high compression ratios, turbochargers, superchargers, or nitrous oxide systems where maintaining optimal head gasket sealing is critical.

Premium Construction and Materials:

• Manufactured from premium grade 8740 chromoly alloy, superior to standard aircraft-quality materials
• Precision heat-treated to 200,000 psi tensile strength for exceptional durability
• Centerless ground through approximately ten passes for near-perfect concentricity
• Thread rolled after heat-treat for 1000% better fatigue strength compared to pre-heat-treat threading
• Undercut design on shorter studs equalizes stretch for consistent clamping force

Performance Benefits:

• Ensures even clamping pressure across the entire head gasket surface
• Compensates for head gasket compression during installation
• Prevents head gasket failure in high-boost and high-stress applications
• Allows gaskets and cylinder heads to align perfectly during installation
• Provides reliable, repeatable torque values for accurate engine assembly

Kit Includes:

• 12-point nuts for precise torque application
• Hardened parallel-ground washers

ARP's exacting manufacturing tolerances ensure superior performance and reliability in demanding racing and high-performance street applications. Each component is precision-machined to deliver consistent clamping force and optimal cylinder head sealing.