Collector Flanges - 1pr 3-Bolt 3-1/2in Dia.

The Patriot Exhaust Collector Flanges - 1 pair 3-Bolt 3-1/2in Dia. (H7261) are precision-engineered exhaust manifold interface components designed for high-temperature engine applications. These collector flanges provide a reliable seal between the exhaust manifold and the collector pipe, essential for maintaining exhaust system integrity and minimizing heat loss in performance and heavy-duty engine configurations. Engine builders, restoration specialists, and performance shops will find these flanges invaluable for custom exhaust systems.

Each pair features a 3-bolt connection pattern with a 3-1/2-inch inner diameter opening, constructed from durable steel in a natural finish. The 0.234 inch thickness provides adequate material mass to withstand thermal cycling and vibration without warping. Gaskets and hardware are included, ensuring proper gasket compression during installation and eliminating the need for separate sourcing.

The standardized 3-bolt pattern ensures compatibility across a wide range of manifold and collector configurations. Proper installation requires careful torque sequencing and gasket sealing compound application to prevent exhaust leaks and maintain system efficiency. Patriot Exhaust is recognized for manufacturing quality exhaust components that meet the demands of performance enthusiasts.