Chev/GMC - Duramax 2500/3500 4" Front-Pipe w/Flange, T409 Stainless steelĀ Get even more exhaust flow with this 4" Front Pipe with Flange.
2001 - UP Chev/GMC - Duramax 2500/3500 4" Front-Pipe w/Flange, AL Not for use on vehicles equipped with Catalytic Converter (2002-2004 'Clean State' [California] has a Catalytic Converter)