Description
Overview
The Flowmaster 40 Series Delta Flow Chambered Muffler delivers the deep, aggressive exhaust note that muscle car enthusiasts crave, backed by the proven engineering that made Flowmaster a household name in performance exhaust. Built around a two-chamber design that incorporates Flowmaster’s Delta Flow® technology, this muffler is engineered to boost performance and refine your vehicle’s sound at the same time.
At the heart of the design are Delta deflectors that generate increased scavenging for better performance, while simultaneously reducing interior sound. The result is a milder exterior tone and reduced interior resonance compared to the standard 40 Series, giving you a more livable driving experience without sacrificing the unmistakable Flowmaster attitude.
Key Benefits
Flowmaster’s Delta Flow® technology sets this two-chamber muffler apart from ordinary chambered designs. The internal deflectors help pull exhaust gases through the system more efficiently, promoting scavenging that supports performance while calming the cabin drone that can make older muscle cars tiring to drive. It’s a smart balance of power and comfort tailored to classic muscle applications.
Durability is engineered in from the start. The muffler is constructed of 16 gauge aluminized steel and fully MIG welded, so it stands up to the heat, vibration, and demands of aggressive driving. A high-temperature paint finish helps protect the exterior against the elements and the intense heat generated by a hard-working exhaust system.
- Delta Flow® two-chamber design for increased scavenging and better performance
- Delta deflectors reduce interior sound and resonance versus the standard 40 Series
- Aggressive exterior tone with a milder, more refined character than the base 40 Series
- 16 gauge aluminized steel construction, fully MIG welded for maximum durability
- High-temperature paint finish for long-lasting protection
- 3.00″ inlet diameter with universal fitment
Fitment & Configuration
This muffler features a 3.00″ inlet diameter and a universal fitment, making it a versatile choice for classic muscle car builds and custom exhaust projects. As part of the 40 Series Delta Flow lineup, it carries Emission Code 5. Always confirm the inlet and outlet requirements for your application before ordering to ensure a proper match with your existing system.
Exhaust tips are sold separately, so you can finish your setup with the look that suits your build. Whether you’re upgrading a weekend cruiser or dialing in a full restoration, the Flowmaster 40 Series Delta Flow Chambered Muffler brings a proven combination of aggressive sound, refined interior comfort, and rugged construction to your exhaust system.
