Header Bolt Kit - 12pt. GM LS

The ARP Header Bolt Kit – 12pt. GM LS is designed for automotive builders who require high-performance fasteners for their LS engine builds. This kit is essential for those looking to enhance reliability and performance under extreme conditions, such as high heat and cylinder pressure.

Constructed from premium chrome-moly steel, these header bolts undergo a proprietary heat-treat process that significantly increases their tensile strength and fatigue resistance. The 12-point head design allows for better load distribution and minimizes bolt galling during installation, ensuring a secure fit that withstands the rigors of thermal cycling and vibration.

Enthusiasts upgrading to performance headers or modifying their LS engines will find that ARP bolts help prevent header gasket failure and exhaust leaks, which are common issues in both aluminum and cast-iron setups. Proper installation with ARP's recommended assembly lube and torque specifications is crucial for achieving optimal performance and longevity.