Free up your BMW's N55 engine with the COBB 3" Downpipe! This direct replacement for the factory downpipe features a 200 cell count high flow catalytic converter and 304 stainless steel tubing. The CNC machined v-band flange and the cast merge section ensures perfect OEM-like fitment.

All of these features combine to provide a free flowing exhaust outlet for high energy exhaust gases to reduce turbo back pressure and increase turbo efficiency. Off-the-shelf mapping available for Accessport part number AP-BMW-002 so it's perfectly tuned out of the box.

The COBB 3" Stainless Steel Catted Downpipe for the BMW N55 powered vehicles is a direct replacement which features a high-flow 304 stainless steel construction and cast tail section.

• 200 Cell Count High Flow Catalytic Converter
• 3" Diameter 304 Stainless Steel Tubing
• Casted Merge Section at Cat-back Connection
• CNC'ed V-Band Flange

COBB Installation Guides & Manuals

 COBB BMW N55 Exhaust 5B2202 Installation Instructions