Description
Overview
The Flowmaster 40 Series Delta Flow Exhaust Muffler brings proven performance and an aggressive attitude to your build. Built around Flowmaster’s two-chamber design with Delta Flow® technology, this muffler is engineered to deliver stronger scavenging for better performance while taming the interior noise that comes with a serious car exhaust. If you’re ready to shop for exhaust that balances power and drivability, this is a muffler built to work hard and last.
The Delta deflectors inside the housing are the heart of the design. They generate increased scavenging for better exhaust flow and a milder exterior tone with reduced interior resonance compared to the standard 40 Series. The result is an aggressive sound level that still lets you enjoy long drives in your classic muscle car without unwanted drone.
Built to Last
This muffler is constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability. A high-temperature paint finish helps it stand up to the heat of a hard-working performance exhaust system. Whether you’re upgrading a weekend cruiser or piecing together a complete exhaust automobile setup, this Flowmaster muffler is built to endure.
Fitment & Configuration
With a 2.25″ inlet diameter and a universal fitment, this 40 Series Delta Flow muffler is a versatile building block for custom exhaust work and classic muscle car applications. It fits into a wide range of setups, making it a smart choice whether you’re assembling a catback exhaust, a cat back muffler system, or replacing tired mufflers on an existing exhaust system. Exhaust tips are sold separately, so you can finish the look exactly the way you want.
Key Highlights
- Two-chamber design featuring Flowmaster Delta Flow® technology for increased scavenging
- Delta deflectors deliver better performance with reduced interior sound and resonance
- Milder exterior tone versus the standard 40 Series while keeping an aggressive character
- 16 gauge 409S stainless steel construction, fully MIG welded for maximum durability
- 2.25″ inlet diameter with universal fitment for flexible installs
- High-temperature paint finish designed for the heat of a performance exhaust
Compare it against a Magnaflow muffler or Magnaflow exhaust and you’ll find the Flowmaster 40 Series Delta Flow stands on its own for muscle car character. When you want a durable, great-sounding muffler as the centerpiece of your cat back exhaust system or full exhaust build, this Flowmaster muffler delivers the performance and tone enthusiasts expect. Please note the California Proposition 65 warning applies to this product (Emission Code 5).
