Description
Overview
The Flowmaster 40 Series Chambered Muffler is the muffler that defined the signature Flowmaster sound. Engineered as an aggressive, no-apologies performance muffler, the Original 40 Series delivers a bold exterior and interior tone that instantly announces your build. If you’ve been chasing that classic Flowmaster exhaust growl, this is the flowmaster muffler that started it all.
Built by the Flowmaster company using a chambered design, the 40 Series produces the deep, race-inspired note that made these performance mufflers a benchmark. It’s the go-to exhaust muffler for anyone who wants their car muffler to be heard as much as it’s felt.
Built to Last
Durability is engineered into every part of this flowmaster exhaust component. The muffler is constructed of 16 gauge aluminized steel and is fully MIG welded for maximum strength and long service life under real-world heat and vibration. A high-temperature paint finish helps the body stand up to the demanding environment of an exhaust system, so your investment keeps looking and performing the way it should.
Key Benefits
- Aggressive interior and exterior sound level — the original Flowmaster 40 tone
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish for heat resistance
- Chambered design engineered by the Flowmaster company
- Universal fitment with a 9.50 body width for flexible installs
Fitment & Installation
This is a universal-fit exhaust muffler with a 9.50 body width, making it a versatile choice for a wide range of custom exhaust muffler car builds and Street Rod applications. It’s part of the Mufflers category and carries an Emission Code of 5. Installation uses new hangers, which are not included, so plan your mounting hardware accordingly. Exhaust tips are sold separately, giving you the freedom to finish your setup exactly the way you want.
Why the 40 Series
Among Flowmaster exhaust systems, the 40 Series stands apart for its unmistakable, aggressive character. Whether you’re piecing together a complete flowmaster exhaust system or upgrading the heart of your current setup, the flowmaster 40 series delivers the sound and build quality that enthusiasts recognize immediately. As one of the most iconic performance mufflers ever offered, the flowmaster 40 remains a favorite for drivers who refuse to blend in.
Choose the Original 40 Series when you want a flowmaster muffler that backs its aggressive tone with rugged, fully welded construction. It’s a proven performance muffler ready to bring authentic Flowmaster attitude to your ride.
