Header Bolt Kit - 6pt. 3/8-16 x 1in (12)

The STAGE 8 FASTENERS Header Bolt Kit – 6pt. 3/8-16 x 1in (12-pack) delivers precision fasteners engineered for high-vibration engine and mechanical applications where fastener security is non-negotiable. These 3/8-16 thread header bolts feature a 1-inch length with six-point hex head geometry, designed to resist loosening under extreme vibration and thermal cycling. The 12-pack quantity covers a full set of bolts for typical header or manifold applications.

Six-point hex design provides superior contact geometry compared to standard 12-point fasteners, reducing camming and bolt shear risk during installation and removal cycles. The 3/8-16 thread pitch and 1-inch length specification meet OEM standards for performance headers, intake manifolds, and exhaust systems where bolt preload retention directly impacts seal integrity and system longevity. STAGE 8 FASTENERS' reputation in high-performance motorsports stems from their anti-vibration engineering—these bolts are manufactured to tight tolerances to ensure consistent clamping force across the full pack.

This kit is essential for engine builders, performance mechanics, and motorsports enthusiasts installing or rebuilding cylinder head assemblies, intake manifolds, or custom headers where vibration-induced fastener failure would compromise reliability. Competitive shooters, off-road vehicle builders, and shop professionals rely on STAGE 8 fasteners for critical engine work that demands repeatable, verified hardware performance. The 12-piece configuration aligns with common header bolt requirements, eliminating the need to source individual fasteners and ensuring matched specification across all mounting points.

Whether you're assembling a race engine, upgrading a stock manifold system, or performing engine maintenance on a tactical or performance vehicle, hardware specification and fastener security are foundational to reliability. This STAGE 8 kit provides verified fasteners for applications where bolt failure is not an option.