The Wehrli Custom Fab passenger-side 2" stainless up pipe kit for 2011–2016 6.6L LML Duramax replaces the OEM passenger up pipe with heavy-duty 11-gauge stainless and durable bellows that resist cracking. Made for Silverado and Sierra 2500/3500 HD trucks, it improves exhaust flow to help turbo spool and reduce EGTs, includes gaskets, is fully TIG welded and installs without tuning for compatible setups.
Wehrli 11-16 Duramax LML Stainless 2in Up Pipe Kit w/ Gaskets (Passenger Side)