Header Bolt Kit - SBC 6pt. 3/8in x 1in

The Header Bolt Kit - SBC 6pt. 3/8in x 1in is designed for Small Block Chevrolet engine builders and performance enthusiasts who require reliable fasteners that withstand high exhaust heat and cylinder pressure. This premium bolt kit replaces standard OEM fasteners, which can loosen or corrode, particularly in modified engines where combustion temperatures are elevated.

The kit features a 6-point bolt design that provides superior grip geometry compared to 12-point alternatives, minimizing the risk of rounding during installation. Each bolt is manufactured to tight tolerances, ensuring consistent clamping force across all cylinder head ports, which helps prevent gasket failure and oil seepage.

This kit is essential for any SBC project, whether using cast or tuned-port headers on a carbureted 350 or a fuel-injected performance build. Installation is straightforward with a standard socket and torque wrench; always apply anti-seize compound to threads and torque to 20–25 ft-lbs for optimal performance.