ARP 207-4206 Head Studs for Mitsubishi EVO X

ARP 207-4206 head studs are engineered specifically for 2008+ Mitsubishi Lancer Evolution X engines, providing superior cylinder head-to-block sealing critical for high-performance turbocharged applications. These premium head studs are essential for builds running high compression pistons, upgraded turbochargers, nitrous oxide, or superchargers where maintaining head gasket integrity under extreme cylinder pressures is paramount.

Premium Construction and Manufacturing:

• Manufactured from premium grade 8740 chrome moly steel, rated superior to standard aircraft quality materials
• Precision heat-treated to 200,000 psi tensile strength for maximum clamping force and durability
• Centerless ground through approximately ten precision cuts to ensure near-perfect concentricity and straightness
• Thread rolled after heat-treat process, delivering approximately 1,000% better fatigue strength compared to pre-heat-treat threading
• Specially undercut shorter studs equalize stretch characteristics for consistent clamping force across all fasteners

Performance Benefits:

• Exacting tolerances allow gaskets and cylinder heads to glide into position with perfect alignment
• Equalized stud stretch compensates for head gasket compression during installation
• Superior fatigue resistance prevents stud failure under repeated thermal cycling
• Optimized clamping force prevents head gasket failure in high-boost applications
• Direct replacement for OEM head bolts with no machining required

Each ARP head stud kit includes premium-quality hardened parallel-ground washers and high-performance ARP Ultra-Torque fastener assembly lubricant to ensure accurate torque readings and proper installation. ARP head studs represent the gold standard in cylinder head fastening systems for serious Mitsubishi EVO X enthusiasts and racers.