Flowmaster Force II Cat-back Exhaust System

1999-2004 Ford F-250/F-350 trucks with V8 or V10 engine.

PART# 17345

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Fits 1999-2004 Ford F-250/F-350 trucks with V8 or V10 engine. Fits 2 and 4 wheel drive models.


For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Force II® cat-back exhaust system provides, the S.O.S. (Single out side) systems are the perfect choice. The 3.00-inch mandrel-bent aluminized steel tubing flows into a large case 70 Series™ performance muffler that delivers a moderate exterior tone and a mild to moderate interior tone. The 3.00-inch tailpipe uses the factory hanger locations for an easy installation. This system is best suited towards customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Note: Fits 2 and 4 wheel drive models.


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16 Gauge Aluminized Steel Tubing
  • Mild to Moderate Exterior Exhaust Tone
  • Dyno Tuned for Maximum Performance
  • Includes a 3-year 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
MaterialAluminized Steel
Muffler Part Number53073
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 Number17345


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 1999-2004 Ford F-250/F-350 trucks with V8 or V10 engine. Fits 2 and 4 wheel drive models.



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