BBC Header Flange Kit 2-1/8 Round Port

The BBC Header Flange Kit 2-1/8 Round Port provides a professional-grade foundation for custom exhaust fabrication on Big Block Chevy platforms. These heavy-duty flanges are designed for automotive technicians and builders who require precise fitment and long-term durability under high-heat conditions. Whether you are constructing custom headers for a fleet vehicle or a high-performance engine, these components ensure a secure seal against the cylinder head.

Manufactured by Patriot Exhaust, this kit features 0.75-inch thick steel construction to effectively resist warping and thermal distortion during extreme operating cycles. The 2.125-inch round ports are precision-cut to match standard Big Block Chevy exhaust profiles, facilitating optimal gas flow and reduced backpressure. Using thick steel plates ensures that the mounting surface remains flat, which is critical for preventing exhaust leaks that can compromise engine efficiency.

This BBC Header Flange Kit 2-1/8 Round Port is sold as a pair, providing the necessary components to begin a comprehensive dual-exhaust manifold project. It is an essential hardware solution for fabricators looking for reliable specifications and high-tolerance manufacturing in their exhaust systems. Compatibility is strictly for Big Block Chevy engines with round port configurations, making it a specialized choice for those demanding mission-critical reliability.