MagnaFlow Touring Series cat-back 16533 for 2001–2006 BMW 3.0L applications swaps the factory exhaust from the catalytic converter back to produce a resonant, cruise-friendly tone. It features mandrel-bent 2.5" piping and two straight-through mufflers that exit driver-side with 3" polished double-wall tips. Extensive 3D scanning delivered a direct-fit design and the system is backed by MagnaFlow's limited lifetime construction warranty.
MagnaFlow SYS C/B 01-05 BMW 330I/CI 3.0L