Patriot Exhaust H7812 Header Flange Kit for Mopar Gen III Hemi, D-Shaped Port, Steel, Pair

Build a secure, properly aligned exhaust connection with the Patriot Exhaust H7812 Header Flange Kit. Designed for Mopar Gen III Hemi applications, this pair of header flanges provides a dependable mounting surface for custom or replacement header assemblies. Each flange is made from durable steel and features a natural finish suitable for fabrication, welding, and installation.

The H7812 header flange uses a D-shaped port engineered to match the exhaust port configuration of compatible Mopar Gen III Hemi cylinder heads. With a 0.375-inch-thick construction, the flanges offer a solid foundation that helps support header tubes and maintain alignment during installation. The precision-oriented design is well suited for performance exhaust projects, engine swaps, and custom-built systems where fit and durability are important.

This Patriot Exhaust header flange kit includes two flanges, making it convenient to prepare both sides of a V8 engine installation. The steel construction can be adapted to a wide range of fabrication needs, while the unfinished natural appearance allows for additional coating, finishing, or treatment based on the application. Verify cylinder head and header compatibility before installation to ensure the D-shaped ports and mounting pattern meet your project requirements.

Whether you are fabricating new headers or repairing an existing exhaust system, the Patriot Exhaust H7812 provides a practical starting point for a clean, strong, and properly supported installation on compatible Mopar Gen III Hemi engines.

Features:

• Brand: Patriot Exhaust
• Part Number: H7812
• Application: Mopar Gen III Hemi engines
• Product Type: Header flange kit
• Quantity: Pair
• Material: Steel
• Finish: Natural
• Port Shape: D-shaped
• Port Size: 2.02 x 1.6 inches
• Flange Thickness: 0.375 inch
• Use: Header fabrication, replacement, and custom exhaust applications