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This Stainless Bros turbine outlet flange is a 4.0in marmon‑style outlet flange compatible with BorgWarner GT42/GT47/GT47 turbos, constructed from 304 stainless steel with a 5.75 mounting diameter. It provides a robust, corrosion‑resistant outlet connection for turbocharger plumbing and is intended for fabricators and turbo installers needing a reliable, sized flange to mate turbine housings to custom downpipes or exhaust assemblies.
Stainless Bros 4.0in Borg Warner 304SS 5.75 GT42/GT47/GT47 Marmon Style Turbine Outlet Flange
