3.5in Flange

The Schoenfeld 3.5in Flange (MPN 350CR) is a precision-engineered collector flange designed for exhaust system applications in high-performance and tactical vehicle platforms. This three-bolt flange serves as a critical interface component where durability, alignment, and longevity directly impact system integrity. It is particularly suited for technicians and vehicle maintenance specialists who require reliable components for specialized vehicles.

Manufactured from solid steel with a natural finish, the 3.5in Flange features a 3.5-inch inner diameter, delivering the structural rigidity required for secure exhaust manifold-to-collector transitions. The three-bolt configuration ensures positive clamping force while allowing for proper gasket seating and thermal expansion—critical factors in high-heat exhaust environments. Steel construction resists warping and corrosion, maintaining dimensional accuracy through repeated thermal cycling and vibration exposure.

This flange is ideal for technicians, fabricators, and vehicle maintenance specialists rebuilding or upgrading exhaust systems on specialized platforms. Whether replacing worn originals or constructing custom exhaust configurations, proper flange selection prevents exhaust leaks and maintains back pressure, ensuring optimal vehicle performance.