2015 Model Year truck owners should verify their exhaust flange type before ordering due to a mid year production change. If your truck has a v-band style connection please see WCF100704
Wehrli Custom Fab Down Pipe (3 Bolt Flange), 3in., for 2015.5-2016 Duramax LML, Stainless
Replace the restrictive crushed factory down pipe on your 2015.5-2016 LML Duramax with this full 3" Stainless steel down pipe. For use with factory turbo or factory style drop in turbo on trucks with the 3 bolt flange exhaust connection. - - Replaces the following GM Part Numbers: 12674630, 12655717 - - For 2011-2014 style exhaust system with v-band connection use Down pipe PN: WCF100704
