Exact tolerances ensure that gaskets and cylinder heads just glide into position and align perfectly. Skunk2 head studs include hex nuts and are manufactured from premium 8740 chromoly steel that is heat treated to 190,000 psi. They are thread rolled after the heat treating process, which vastly improves their fatigue tolerance compared to studs threaded before heat treatment. High-quality, parallel ground washers included.

Engine applications: all B-series VTEC (including LS/B20 VTEC) and K20Ax & K24Ax engines.

Features

• 7/16 head studs
• Made from 8740 chromoly
• Heat treaded to 190,000 PSI strength
• 12 point nuts
• Hardened and parallel ground washers
• Includes ARP 'Ultra-Torque' assembly fastener lubricant