Wehrli Custom Fabrication 3.5" Down Pipe Assembly, 2017-2022 GM 6.6L L5P Duramax

Replace the restrictive crushed factory down pipe on your 2017-2022 L5P Duramax with this 3.5" Down Pipe for improved exhaust flow. Black Ceramic Coated and Heat wrapped. Down Pipe includes bungs for sensors and NO tuning required to use this down pipe.

***Connects to the DOC (Diesel Oxidation Catalyst) outlet flange and mates with OEM exhaust system front pipe with the 4 bolt style flange connection.***

WCFab piping kits and emissions compliant tuning recommended for optimum performance gains.

Features:

➡ 3.5" Down Pipe
➡ High Temp Black Ceramic Coat Finish
➡ Heat Wrap Pre-installed
➡ Catalyst Back - Emissions Compliant
➡ NO TUNING REQUIRED!


Cross References:

PPE: 117000800