ARP 202-4301 Head Stud Kit for Nissan - RB20/RB25DET

The ARP 202-4301 head stud kit is engineered specifically for 1989-1998 Nissan Skyline RB20DET and RB25DET engines, delivering superior cylinder head-to-block sealing critical for high-performance applications. This kit is essential for engines running high compression pistons, turbochargers, nitrous oxide, or superchargers where head gasket failure can be catastrophic.

Premium Construction and Materials:

• Manufactured from premium grade 8740 chromoly alloy, rated superior to aircraft-quality materials
• Precision heat-treated to 200,000 psi tensile strength for exceptional durability
• Centerless ground through approximately ten precision cuts for near-perfect concentricity
• Thread rolled after heat-treat for approximately 1000% better fatigue strength compared to pre-heat-treat threading
• Specially undercut shorter studs equalize stretch for consistent clamping force across the cylinder head

Performance Benefits:

• Exacting tolerances allow gaskets and cylinder heads to glide into position with perfect alignment
• Consistent clamping force compensates for head gasket compression during installation
• Prevents blown head gaskets and ensures optimum sealing under extreme conditions
• Superior reliability for racing and high-boost applications

ARP's meticulous manufacturing process sets these head studs apart from inferior alternatives that skip critical steps like centerless grinding or thread roll bar stock before heat treatment. For serious Nissan RB engine builders demanding the ultimate in reliability and performance, the ARP 202-4301 kit is the professional choice.