BSI 4.62" Half Marmon for Borg S400, Garret G Series 42 and 45 T4 Downpipe Flange W/Clamp

3.5" or 4.0" Downpipe flange machined from billet 304ss, with a slip fit register to accommodate your tubing.

Designed to work with the S400 T4 turbine housing that is offered by Borg Warner.