Head Stud Kit - CA625+ Pro-Series GM LS 04-Up

The ARP Head Stud Kit – CA625+ Pro-Series GM LS 04-Up is a premium fastening solution engineered for serious LS-series engine builders and performance enthusiasts. Cylinder head studs replace factory bolts with a superior clamping mechanism, distributing load more evenly across the head surface and preventing gasket separation under extreme boost, nitrous, or high-RPM stress. This kit is essential for turbocharged, supercharged, and nitrous-injected LS applications where conventional bolts simply cannot maintain cylinder head integrity.

Constructed from high-strength chromoly steel in natural finish, these studs deliver consistent preload and reduced relaxation compared to standard hardware. The 12-point nut design provides superior grip geometry, reducing slippage during installation and torque cycles while minimizing fastener damage. ARP's Pro-Series specification ensures precise manufacturing tolerances and material certification, critical for applications targeting 500+ horsepower where head gasket failure risk is unacceptable. The CA625+ designation confirms compatibility with 2004 and later GM LS-series engines, including LS1, LS2, LS3, LS7, and LSA platforms across Corvette, Camaro, Silverado, and Tahoe applications.

Professional engine builders, tuners, and power-addict DIYers rely on this kit when respecting cylinder head clamping forces matters most. Installation requires head removal and careful torque sequencing following ARP's specifications, making it ideal for full engine rebuilds, cylinder head reconditioning, or performance upgrades. Whether you're chasing reliability on a built 454-inch stroker or securing a ported and polished head on a boosted platform, proper stud selection prevents catastrophic gasket failure and extends engine longevity in demanding conditions.