2011-2015 GM Duramax 6.6L Cat & DPF Exhaust Pipe

The Duramax 4inch 409stainless 6.6L Exhaust Pipe fits 2011 to 2015 Chevrolet Silverado and GMC Sierra 2500 & 3500HD models with the 6.6L Duramax engine. It is important to note that this pipe does not fit Cab & Chassis models, and late 2015 models with a three-bolt flange are incompatible.

Retains factory axle back piping. 

• Professional Installation Recommended: These kits and parts are strongly recommended to be installed by professional mechanics only. Improper installation may lead to performance issues or damage to your vehicle. Please note that, unless specified differently on the product page, our parts do not include installation instructions. Our components are intended for individuals with a proficient understanding of mechanical systems and procedures. Like many aftermarket parts compatible with a variety of vehicles, minor adjustments or modifications may be necessary during the installation process. We cannot accept returns or offer refunds on the basis of an inability to complete the installation due to the absence of instructions.