ARP 234-4316 HEAD STUD KIT - 12pt. head
Fits 1998-mid-2004 GM LS engines with different length bolts. (GM LS GEN III engines that utilize 3 different lengths).
IMPORTANT NOTE: MUST HAVE 2 different length primary head bolts plus a third smaller bolt. There is a Mid-Year split on the head bolts, If you have ALL SAME Size head bolts this kit is NOT for YOU.
Exact tolerances ensure that gaskets and cylinder heads just glide into position and align perfectly. These ARP Head Studs include 12-point nuts and are manufactured by ARP from premium 8740 chrome moly steel and 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.