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. 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. Wehrli 15.5-16 Chevrolet 6.6L LML Duramax 3in Stainless Down Pipe (3 Bolt Flange). Down Pipe (3 Bolt Flange), 3in., for 2015.5-2016 Duramax LML, Stainless. 3" Stainless Downpipe (3 bolt flange). Down Pipe (3 Bolt) 15.5-16 Dmax SS. Turbocharger Down Pipe. Down Pipe 15.5-16 SS. Heat Wrap and clamps. No Tuning Required. Made in USA

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