The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
Features:
- Durable fully welded 409SS stainless steel
- Aggressive Sound Exterior Exhaust Tone
- Noticeable interior resonance
- Excellent Street/Strip and Off Road application
Universal Muffler - Some adaptation may be required.
Installation Notes:
Universal Muffler - Some adaptation may be required.
About Flowmaster
Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Submodel |
Years |
Engine |
| Ford |
Mustang |
Bullitt |
2008 |
4.6L / 281 / V8 |
| Ford |
Mustang |
Bullitt |
2009 |
4.6L / 281 / V8 |
| Ford |
Mustang |
GT |
2005 |
4.6L / 281 / V8 |
| Ford |
Mustang |
GT |
2006 |
4.6L / 281 / V8 |
| Ford |
Mustang |
GT |
2007 |
4.6L / 281 / V8 |
| Ford |
Mustang |
GT |
2008 |
4.6L / 281 / V8 |
| Ford |
Mustang |
GT |
2009 |
4.6L / 281 / V8 |
| Ford |
Mustang |
GT |
2010 |
4.6L / 281 / V8 |
| Ford |
Mustang |
Shelby GT |
2007 |
4.6L / 281 / V8 |
| Ford |
Mustang |
Shelby GT |
2008 |
4.6L / 281 / V8 |
