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
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WARNING: Cancer and Reproductive Harm