Description
Overview
The Flowmaster 40 Series Chambered Muffler is the original aggressive-sounding performance muffler that put the Flowmaster company on the map. Built to deliver that unmistakable, deep-throated Flowmaster exhaust note, the Original 40 Series is engineered for drivers who want a bold exterior tone and a purposeful interior sound. If you’re chasing that classic, iconic Flowmaster sound, this is the exhaust muffler that started it all.
This flowmaster muffler uses a proven chambered design to produce an aggressive sound level both inside and outside the vehicle. As part of the legendary Flowmaster exhaust systems lineup, the 40 Series has earned its reputation as one of the most recognizable performance mufflers on the street.
Built to Last
Durability is engineered into every 40 series muffler. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability, this car muffler is finished with a high-temperature paint that helps it stand up to the demands of real-world driving. From daily street use to weekend cruising, the Flowmaster 40 is designed to hold up over the long haul.
Key Highlights
- Original 40 Series chambered design for that signature aggressive Flowmaster sound
- Constructed of durable 16 gauge aluminized steel
- Fully MIG welded for maximum durability
- High-temperature paint finish for lasting protection
- 2.25″ inlet diameter
- Universal fitment for flexible installation
Sound & Performance
The Original 40 series muffler delivers an aggressive exterior and interior tone. This is the muffler for enthusiasts who want their vehicle to be heard — a true performance muffler that produces the raw, hard-hitting note Flowmaster is known for. As one of the defining exhaust muffler car upgrades, the 40 Series brings attitude to any build that demands presence.
Fitment & Configuration
With a 2.25″ inlet diameter and universal fitment, this flowmaster exhaust muffler is a versatile choice for a wide range of applications, and it’s well suited to street rod builds. Because fitment is universal, it can be integrated into a variety of custom and replacement setups as part of a complete flowmaster exhaust system. Please note that exhaust tips are sold separately, allowing you to finish your build exactly how you want.
Whether you’re upgrading tired, restrictive mufflers or building a fresh exhaust from the ground up, the Flowmaster 40 Series Chambered Muffler brings the authentic Flowmaster exhaust character that enthusiasts have trusted for years. Choose the original when only the genuine Flowmaster 40 series sound will do.
