2003.5-2007 Powerstroke 4" Turbo Back Exhaust System w/ Muffler (421020)

The 421020 is a 4" turbo-back exhaust system for the 2003.5-2007 Ford F-Series. It replaces your restrictive OE exhaust system with a 4" mandrel-bent exhaust system and includes a high-flow muffler for street applications. 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 not only sounds great, but it also improves torque, mileage, and throttle response.

Part Number: 421020

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

• This system will NOT fit trucks with an automatic transmission.

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