Description
Overview
The Flowmaster 40 Series Delta Flow Exhaust Muffler brings proven two-chamber performance to nearly any build. Engineered with Flowmaster’s Delta Flow® technology, this muffler uses internal delta deflectors to generate increased scavenging for stronger flow and better performance, while simultaneously calming interior resonance. The result is an aggressive exterior tone paired with a more livable cabin experience than the standard 40 Series delivers.
Built for Street/Strip duty, this performance exhaust piece is constructed of 16-gauge aluminized steel and fully MIG welded for maximum durability. A high-temperature paint finish helps it stand up to the heat and abuse of daily driving and spirited runs alike, making it a smart upgrade whether you’re refreshing a tired factory setup or piecing together a custom exhaust system.
Key Benefits
Flowmaster’s two-chamber design is tuned to boost scavenging so your engine breathes freer through the muffler, translating to responsive power delivery. Compared to the standard 40 Series, this version dials in a milder exterior tone and reduced interior drone, so you keep the muscle-car attitude without the constant highway roar. It’s the kind of exhaust muffler that sounds mean when you’re on it and settles down when you’re cruising.
- Delta Flow® two-chamber design for increased scavenging and better performance
- Aggressive sound with a milder exterior tone and reduced interior resonance versus the standard 40 Series
- 16-gauge aluminized steel body, fully MIG welded for maximum durability
- High-temperature paint finish for heat and corrosion resistance
- 2.00″ inlet diameter, universal fitment for flexible installs
- Street/Strip rated with Emission Code 5
Fitment & Configuration
This is a universal-fit muffler with a 2.00-inch inlet diameter, giving fabricators and DIYers the freedom to integrate it into a wide range of cat back exhaust system layouts and custom car exhaust projects. It mounts using new hangers (not included), so plan your hardware accordingly for a clean, rattle-free install. Exhaust tips are sold separately, letting you finish the look exactly how you want.
Because it’s a universal 40 Series Delta Flow unit, it pairs well with a broad selection of vehicles and applications when you’re building out a complete exhaust system. Whether you’re upgrading from stock mufflers or replacing a worn component, this Flowmaster muffler delivers the balance of power, tone, and toughness enthusiasts look for.
Why This Muffler
When you shop for exhaust upgrades, the muffler is where sound and flow come together. This Flowmaster 40 Series Delta Flow muffler is a dependable choice for anyone chasing a stronger, more aggressive exhaust automobile setup without sacrificing everyday comfort. Trust the Delta Flow engineering, the fully welded aluminized construction, and the street-proven reputation of the 40 Series to bring your performance exhaust vision to life.










