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Flowmaster Force II Cat-back Exhaust System

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

PART# 817345

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$516.00   Suggested Retail
$463.95   Your Price
Estimated shipping date: 03/16/2021
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Moderate to mild sound


For the person who wants a subtle custom appearance with all the performance benefits that a Flowmaster® cat-back exhaust system provides. This Force II® exhaust system is constructed from 3.00-inch mandrel-bent stainless steel tubing, uses the factory hanger locations for a quick and easy installation and includes a 70 Series™ performance muffler to keep the interior tone down to a minimum. The system is finished off with a highly polished 3.50-inch stainless steel tip exiting behind the rear wheel, making it especially suitable 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, hardware and installation instructions and is covered by our Lifetime Limited Warranty.


  • Includes Hangers and Hardware for an Easy Installation
  • Large 3.50-inch Polished 304 Stainless Steel Tip
  • Mandrel-bent 16-gauge Stainless Steel Tubing
  • Stainless Steel 70 Series Performance Muffler
  • Connects After Factory Catalytic Converter
  • Mild to Moderate Exterior Exhaust Tone
  • Uses the Factory Hanger Locations
  • Quick and Easy Installation
  • Lifetime Limited Warranty


Emission Code5
Exhaust SeriesForce II
Exit PositionSingle Side Exit
Heat ShieldNo
Inlet Diameter (in)3
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series70 Series Big Block
Outlet Diameter (in)3
Product TypeExhaust System
Single DualSingle
Sound LevelModerate/Mild
System TypeCat-back
Tip Diameter (in)3.5
Tip Quantity1
Tubing Diameter (in)3
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817345



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 and F-350 trucks with a V8 or V10 engine.


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