Flowmaster 17312 American Thunder Cat-Back Exhaust System 1999-2004 Ford Mustang GT/Mach 1/Bullitt 4.6L V8


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1999-2004 Ford Mustang GT, MACH 1 and Bullitt models with 4.6L SOHC engine. - Moderate sound

For the person who is looking for a complete Flowmaster® cat-back dual exhaust system with an aggressive tone. With easy fit in mind, this American Thunder® exhaust system features mandrel-bent 2.50-inch aluminized steel tubing for maximum performance and includes a pair of specially selected Super 40® Series performance mufflers for a deep powerful sound. The custom tailpipes feature added clearance and exit in the factory location with large 3.00-inch polished tips. The system uses the factory hanger locations for an easy install and delivers a moderate to aggressive interior and exterior tone, best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage and are designed for an easy fit. The system includes all necessary parts, hardware and instructions for an easy installation you can do at home. Covered by our 3-year Limited Warranty. If you prefer a full stainless steel system covered by our Lifetime Limited Warranty, check out our cat-back exhaust system #817312.

  • Includes Hangers and Hardware for an Easy Installation
  • Large 3.00-inch Polished Stainless Steel Tips
  • Dyno Tuned for Maximum Performance
  • Super 40 Series Performance Mufflers
  • Over 35+years of Flowmaster Quality
  • Uses the Factory Hanger Locations
  • Moderate Exterior Exhaust Tone
  • Easy Installation
weight 60
length 52.5
width 16.5
height 15
Brand Flowmaster
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
California Proposition 65 Required Yes
Emission Code 5
Exhaust Series American Thunder
Exit Position Dual Out Rear
Heat Shield No
Inlet Diameter (in) 2.5
Material Aluminized Steel
Muffler Part Number Kit Only
Muffler Quantity 2
Muffler Series Super 40 Series
Outlet Diameter (in) 2.5
Product Type Exhaust System
Single Dual Dual
Sound Level Moderate
System Type Cat-back
Tip Diameter (in) 3
Tip Quantity 2
Tubing Diameter (in) 2.5
Warning California Proposition 65

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