Flowmaster Force II Cat-back Exhaust System

2005-2007 Ford F-250/F-350 Super Duty trucks with 5.4L or 6.8L engines.

PART# 817422

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Fits 2005-2007 Ford F-250 and F-350 Super Duty trucks with 5.4L or 6.8L engines.


For owners of 2005-2007 Ford F250 and F350 trucks, Flowmaster® introduces the last exhaust system these V8 and V10 powered vehicles will ever need. This 3.00-inch single exhaust Force II® system features a 70 Series™ muffler for a mild exterior and interior tone. Perfect for trucks used for work or extended towing, this all-409S stainless system is engineered for maximum efficiency and performance gains, as well as a lifetime of durability. Fitting all wheelbases, the system exits in the factory location behind the rear tire with a large polished stainless steel exhaust tip and comes complete with detailed installation instructions, and all necessary hardware. The system is backed by our Lifetime Limited Warranty.


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16 Gauge Stainless Steel Tubing
  • Connects After Factory Catalytic Converter
  • Mild to Moderate Exterior Exhaust Tone
  • Uses the Factory Hanger Locations
  • Lifetime Limited Warranty
  • Easy Installation


California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code5
Exhaust SeriesForce II
Exit PositionSingle Side Exit
Heat ShieldNo
Inlet Diameter (in)3
MaterialStainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series70 Series Big Block
Outlet Diameter (in)3
Product TypeExhaust System
Single DualSingle
Sound LevelMild/Moderate Sound
System TypeCat-back
Tip Diameter (in)3.5
Tip Quantity1
Tubing Diameter (in)3
Part Number817422


This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Fits 2005-2007 Ford F-250 and F-350 Super Duty trucks with 5.4L or 6.8L engines.



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    Some parts are not legal for use in California or other states with similar regulations.