Stainless Bros 4.0in Borg Warner 304SS 4.21 S200/S300/S400 Marmon Style Turbine Outlet Flange

Stainless Bros is known for making well-built exhaust and fabrication components. This 4-inch Marmon style turbine outlet flange is a prime example, designed for use with Borg Warner S200, S300, and S400 series turbochargers. It's crafted from 304 stainless steel, which is a solid choice for exhaust applications because it resists corrosion and holds up well to high temperatures.

This flange features a 4.21-inch outside diameter, which is the standard for Marmon style connections on these popular Borg Warner turbos. The 4-inch inlet size means it's ready to connect to a 4-inch exhaust downpipe. Using a quality flange like this helps ensure a leak-free seal at the turbine outlet, which is crucial for proper turbocharger operation and exhaust system efficiency. It's a straightforward part for fabricators working on custom turbo setups.