2003.5-2007 Powerstroke 4" Turbo Back Exhaust System w / Muffler (521009)

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

The 521009 / 531006 is a 4" turbo-back with a 3.5" downpipe 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 kit has a 3.5" downpipe off the turbo that adapts to the 4" exhaust system. This system not only sounds great but also improves torque, mileage, and throttle response.

Part Number: 521009

• 4" Turboback Exhaust system.
• Includes Muffler
• Includes 3.5" Downpipe
• Aluminized Steel
• Single Side Exit
• Easy Install - Mounts to OE Hangers

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