MBRP Front-Pipe w/Flange for 2001-2005 Chevy GMC 6.6L Duramax GMAL401

Get even more exhaust flow with this 4" Front Pipe with Flange.

Built from heavy duty aluminized steel, MBRP’s 4" Front Pipe with Flange is designed to increase exhaust flow and improve performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sale or use in the state of California.

Key Features

• Adds Horsepower and Torque
• Improved Airflow through 4" Mandrel-bent tubing
• Lowers Exhaust Gas Temperatures
• Backed by a 3-year warranty