Universal 40 Series 409 SS Muffler (8042543) by Flowmaster®. Muffler Series: 40 Series. Muffler Sound: AGGRESSIVE. Muffler Body Finish: Gray. Muffler Body Shape: Oval. Muffler Body Material: 409 SS. Muffler Configuration: Offset - Offset. Muffler Type: Chambered. Inlet Diameter: 2.5". Outlet Diameter: 2.5". Muffler Body Length: 13". Muffler Overall Length: 19". Muffler Body Width: 9.75". Muffler Body Height: 4". Muffler Body Diameter: 9.75". 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.
Notes: To ensure precise fit, please check muffler shape, length and inlet diameter: the latter should match your exhaust pipe diameter.
- Durable fully welded 409 stainless steel
- Aggressive Sound Exterior Exhaust Tone
- Noticeable interior resonance
- Excellent Street/Strip and Off Road application
- Limited Lifetime Warranty
Flowmaster mufflers differ in technology and tuning, and thus in tone and character, to give your performance engine a sound to your personal liking.
All Flowmaster mufflers are tuned for maximum performance. All Flowmaster mufflers produce a beautiful deep performance tone. Choosing the right Flowmaster muffler is not a technical decision – it is all up to your personal taste. It’s A Sound Decision®.
Flowmaster mufflers employ two unique technologies developed by the company; the patented Delta Flow and the Laminar Flow. They give different characters of sound and can be tuned to achieve the desired exhaust note. Flowmaster Exhaust System Technology is so versatile, and gives such a high degree of control, that it is used both by racers, who want maximum power, and by the U.S. Air Force in Stealth applications where maximum silence and minimum heat emissions are prime considerations. Be it for a domestic or import truck, SUV, off-road warrior, daily driver, muscle car, euro-spec cruiser or sport compact vehicle Flowmaster always has the right muffler for you.
Flowmaster® has its roots in solving the engine noise problems encountered by California racers in the 1980s. In 1983 Flowmaster’s founder, Ray Flugger, created his first patented design of racing silencers, which dampened noise with minimal loss of power. Ray attached handles to ease carrying the square shaped race mufflers through the race pits, and the mufflers became known as the "suitcase mufflers." Today, the innovative Flowmaster mufflers are the result of years of development with top race engine builders, thousands of hours of dyno research and "real-world" on-track testing.