Description
Overview
The Flowmaster 40 Series Delta Flow Chambered Muffler brings proven Flowmaster engineering to your exhaust system with a two-chamber design built around Flowmaster’s Delta Flow® technology. Engineered for late model muscle cars, this muffler delivers the aggressive attitude enthusiasts expect while refining the way sound and airflow move through the system. If you want a muffler that sounds serious without overwhelming the cabin, the 40 Series Delta Flow strikes a purposeful balance.
At the heart of this muffler are the Delta deflectors, which generate increased scavenging for better performance and reduced interior sound. Compared to the standard 40 Series, this Delta Flow version produces a milder exterior tone and noticeably reduced interior resonance, so you get that unmistakable Flowmaster growl on the outside with a more livable driving experience behind the wheel.
Built to Last
Durability is engineered in from the start. The muffler is constructed of 16 gauge aluminized steel and is fully MIG welded for maximum durability, standing up to the heat and demands of a performance exhaust environment. A high-temperature paint finish protects the exterior and helps the muffler endure the extreme conditions found under any hard-driven vehicle. This is a muffler designed to perform mile after mile.
Key Highlights
- Two-chamber design featuring Flowmaster’s Delta Flow® technology for improved scavenging
- Delta deflectors that boost performance while reducing interior sound
- Milder exterior tone and reduced interior resonance versus the standard 40 Series
- Constructed of durable 16 gauge aluminized steel, fully MIG welded
- Protective high-temperature paint finish
- 2.50″ inlet diameter with an offset (same side) outlet location
Fitment & Configuration
This is a universal-fit muffler with a 2.50″ inlet diameter and an offset outlet where the inlet and outlet sit on the same side. It carries an aggressive sound level rating and an emission code of 5, making it a strong match for late model muscle car applications. Because it is a universal design, it can be integrated into a wide range of custom and replacement exhaust setups.
Please note that installation requires new hangers, which are not included, and exhaust tips are sold separately. This allows you to tailor the mounting and tip configuration to your specific vehicle and personal preference. Pair the 40 Series Delta Flow with the components that fit your build to complete a performance exhaust that looks, sounds, and performs the way you want.
For drivers chasing the classic Flowmaster sound with added refinement, the 40 Series Delta Flow Chambered Muffler delivers aggressive character, smart airflow engineering, and rugged construction in one purpose-built package.
