2001-2004.5 Duramax 4" Downpipe Back Exhaust System w / Muffler (431107 / 432107)

Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.

The 431107/432107 by Flo-Pro is a 4" turbo-back exhaust system for the 2001-2007 Duramax Trucks. Just like all of Flo-Pro Manufacturings Exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you sail through the installation process. This system will replace your restrictive OE exhaust system with a 4" high-flow exhaust system that not only sounds much better but also will improve mileage, torque, and throttle response!

Part Number: 431107/432107

• 4" Turboback Single Exhaust system.
• Includes Muffler
• Aluminized Steel & Stainless Steel Options
• Single Side Exit
• Easy Install - Mounts to OE Hangers

• The box this product comes in may be labeled as 01-04.5, and the instructions may be listed as 01-04.5. However, this System will fit all the way from 2001-2007 models.

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