PMI 234-4317 2005-up Stud Kit LS Gen 4 Engines High Performance

These head studs are manufactured by PMI from premium 8740 chrome moly steel and heat treated to 200,000 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 and 12 point nuts included. Exact tolerances ensure that gaskets and cylinder heads just glide into position and align perfectly.
 
For 2005-up LS engines and some 2004 LS engines using "equal length" bolts.
 
Be sure to note which head bolts you need as GM used two different style LS head bolts
 
 
 
2004-2014 heads used QTY 10 100mm bolts, and QTY 5 45mm bolts
 
PMI Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. PMI Pro Series kits are also available with 12-point nuts, and all kits come complete with hardened parallel washers for an even load distribution and accurate torque readings.