Description
Overview
The Flowmaster 40 Series Delta Flow exhaust muffler brings proven two-chamber performance to your late model muscle car build. Engineered around Flowmaster’s Delta Flow® technology, this muffler uses internal Delta deflectors to generate increased scavenging for better performance, while simultaneously reducing interior sound and resonance. If you’re ready to shop for exhaust that delivers an aggressive attitude without an overwhelming cabin drone, this 40 Series muffler is built to do exactly that.
Compared to the standard 40 Series, this design produces a milder exterior tone and reduced interior resonance, giving you a cleaner, more refined experience behind the wheel while still holding onto that unmistakable Flowmaster muffler bark. It’s a smart choice for enthusiasts who want a serious performance exhaust note that they can still live with on daily drives and long highway pulls.
Built to Last
Durability is engineered in from the start. This Flowmaster muffler is constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability, so it’s ready to stand up to heat, road exposure, and the demands of an aggressive exhaust system. A high-temperature paint finish adds an extra layer of protection to keep it looking and performing its best.
Key Highlights
- Two-chamber Delta Flow® design with Delta deflectors for increased scavenging and better performance
- Milder exterior tone and reduced interior resonance versus the standard 40 Series
- Aggressive sound level for a true performance exhaust character
- 16 gauge 409S stainless steel construction, fully MIG welded for maximum durability
- 3.00″ inlet diameter
- High-temperature paint finish for added protection
Fitment
This is a universal-fit muffler designed with the late model muscle car in mind, making it a versatile building block for custom and replacement exhaust automobile projects across Chevrolet, Dodge, Ford, GMC and more. Because it is a universal application, it mounts using new hangers (not included), so plan your installation accordingly. Exhaust tips are sold separately, letting you finish the car exhaust exactly the way you want.
Whether you’re piecing together a full catback exhaust system or upgrading the muffler in an existing setup, the 40 Series Delta Flow slots in as the heart of your exhaust system. It carries an Emission Code of 5 and includes a California Proposition 65 warning. From bolt-on mufflers to a complete cat back exhaust system, this Flowmaster exhaust muffler delivers the balance of power, tone, and toughness that serious enthusiasts demand.
Pair it with your preferred piping and exhaust tips to complete a performance exhaust that looks as strong as it sounds. When you want a dependable, aggressive-sounding muffler engineered for real-world driving, the Flowmaster 40 Series Delta Flow is ready to work.
