ARP 234-4317 – Pro Series Cylinder Head Stud Kit (GM LS, 2004+)

Built for boosted and high-RPM LS builds, ARP’s Pro Series head studs deliver clamping force and repeatable torque so your head gaskets stay sealed—run after run. Designed for Gen III/IV GM LS small-blocks (mid-2004 and later with same-length stud configuration).

Why it’s better

• 8740 chromoly studs, heat-treated and thread-rolled after heat-treat for superior fatigue strength and durability. 

• Includes 12-point nuts and hardened, parallel-ground washers for even load and accurate torque. Black oxide finish; ARP’s Pro Series quality trusted by top engine builders.

Fitment / applications

• Gen III/IV GM LS small-block engines, 2004+ “all same length stud” cylinder head pattern (e.g., LS2, LS3, LS7; 4.8L, 5.3L, 6.0L, 6.2L, 7.0L). Always verify your head casting and year split.

• Complete studs, 12-pt nuts, and washers set (socket sizes: 3/8" 12-pt, 9/16" 12-pt, plus 1/8" & 3/16" Allen for install). 

Install notes

• Use ARP Ultra-Torque on threads and under nuts; follow ARP’s torque sequence/values for this kit (see included instruction sheet). 

SKU / Part No.: ARP 234-4317
Brand: ARP – Pro Series

Part-Ticular Parts tip: pair these with MLS head gaskets and a precise surface finish for maximum sealing in boosted or nitrous builds.