Header Bolt Kit - 12pt. 3/8 x .875 UHL (12)

The Header Bolt Kit - 12pt. 3/8 x .875 UHL (12) by ARP is a specialized fastening solution designed for serious engine builders and performance mechanics focused on high-heat exhaust applications. This kit is particularly useful for assembling exhaust manifolds and headers, where standard bolts may fail under the extreme conditions of thermal cycling and vibration.

Manufactured from premium alloy steel, these fasteners feature a distinctive 12-point head design that allows for more even distribution of clamping load compared to conventional 6-point bolts. This design helps to reduce stress concentration at the fastener, enhancing durability and performance in high-temperature environments.

Ideal for street performance engines, classic muscle car restorations, and modified platforms, this kit includes twelve bolts, sufficient for a complete dual header installation or manifold replacement. Mechanics and engine builders trust ARP header bolts for their reliability, ensuring consistent engine integrity and performance.