Header Bolt Kit - 12pt. 3/8-16 x 1-1/4 (16)

The STAGE 8 FASTENERS Header Bolt Kit – 12pt. 3/8-16 x 1-1/4 (16) is designed for engine builders and performance mechanics seeking reliable fasteners for exhaust manifold or header assembly installations. This 16-piece kit simplifies the process of sourcing compatible fasteners, making it ideal for builds or restorations.

Manufactured from premium-grade alloy steel, these header bolts feature precise 12-point heads that help distribute clamping force evenly, reducing the risk of bolt stretch and thread pull-through. The 3/8-16 diameter and 1-1/4 inch length are designed to fit standard header flange patterns, enhancing compatibility with various applications.

This header bolt kit is particularly beneficial for those upgrading from stock cast-iron manifolds to high-flow headers, whether working on classic hot rods or modern performance vehicles. The superior grip of twelve-point fasteners minimizes the chance of rounding, ensuring consistent torque application in tight engine bay spaces.