2001-2023 GM 6.6L Duramax Three-Inch 304 Stainless Steel Down Pipes
50 States Emissions Legal (E.O. D-701-36)
Remove your crushed oval-shaped stock down-pipe and replace it with a smooth, round, long-lasting full 304 stainless steel Down-Pipe from PPE. Includes a woven titanium sleeve to reduce engine bay temperatures.
Installation Guide: 01-04 Duramax Three-Inch Down Pipe
Installation Guide: 11-14 Duramax Three-Inch Down Pipe
Installation Guide: 17-22 Duramax Three-Inch Down Pipe