2017-2023 GM Duramax L5P - 3.5" Down-Pipe

Vehicle Fitment

Duramax L5P downpipe upgrade is compatible with 2017, 2018, 2019, 2020, 2021, 2022, 2023 Chevrolet Silverado & GMC Sierra 2500 & 3500HD 6.6L Duramax L5P pickup trucks

Description

This 3.5" turbocharger downpipe (also known as the turbo direct pipe) will remove the DOC and increase exhaust flow out of the turbo, improving performance. There are other versions of this pipe that start behind the Diesel Oxidation Catalysts, leaving it installed for emissions-on setups but this pipe will fully remove the DOC for the best airflow and power gains.

Both DPF delete pipes, and full exhaust systems do not include a DOC delete, this pipe is needed to fully remove your emissions but isn't required for a delete tune.

Features

• 3.5" Stainless Steel Piping
• 20% better flow than the factory pipe
• Heat wrap included keeping engine bay temperatures down
• Greater heat-retention
• Will not affect emissions systems
• Maximum flow for competition applications
• 4-bolt flange, two studs installed
• Completely eliminates the DOC
• 2020+ may require adjustments to the hanger
• 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.