Header Bolt Kit - 6pt. Mixed Sizes (12)

The Stage 8 Fasteners Header Bolt Kit – 6pt. Mixed Sizes (12) is a precision fastener assortment engineered for high-performance engine builds and powertrain assembly work. This set of 12 mixed-size header bolts combines hardened steel construction with nickel plating to resist corrosion and thread galling—critical performance factors in demanding mechanical environments where header bolts secure critical engine components under extreme heat and vibration cycles.

Each bolt features a 6-point hex head design that provides superior grip and reduces the risk of rounding during installation and removal—a real-world advantage when working with tight tolerances or re-servicing headers. The nickel plating adds corrosion resistance without sacrificing the mechanical properties of the base steel, making this kit suitable for both street and performance applications. The mixed-size configuration covers common header bolt specifications, eliminating the need to source bolts individually and reducing downtime during assembly and maintenance operations.

This kit is designed for engine builders, performance technicians, and serious enthusiasts working on V8 powerplants or custom engine platforms. Whether you're installing new headers, rebuilding existing ones, or maintaining a high-output engine, having a quality mixed-size header bolt assortment on hand reduces fabrication delays and ensures every fastener meets load and corrosion requirements. The Stage 8 brand is recognized for precision fastener engineering, and this 12-piece set delivers the reliability and consistency that professional-grade engine work demands.