Description
Overview
The Flowmaster 40 Series Delta Flow Chambered Muffler brings proven performance sound and durable construction to your street or strip build. Built around a two-chamber design that incorporates Flowmaster’s Delta Flow® technology, this muffler is engineered to deliver an aggressive exhaust note while improving flow characteristics under the vehicle. It’s a universal-fit muffler with a 3.00-inch inlet, making it a versatile choice for a wide range of custom and performance exhaust setups.
Delta Flow Technology
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, the Delta Flow design produces a milder exterior tone and reduced interior resonance, so you get the aggressive presence Flowmaster is known for without excessive drone inside the cabin. It’s a smart balance of attitude and livability for daily-driven street cars and dedicated strip machines alike.
Built to Last
Durability is engineered in. The muffler is constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability, standing up to the heat and vibration of hard use. A high-temperature paint finish helps protect the exterior, so the muffler holds up in real-world driving conditions.
Key Highlights
- Two-chamber design featuring Flowmaster Delta Flow® technology
- Delta deflectors for increased scavenging and improved performance
- Aggressive sound level with reduced interior resonance versus the standard 40 Series
- 16 gauge aluminized steel construction, fully MIG welded
- High-temperature paint finish for lasting protection
- 3.00-inch inlet diameter with universal fitment
Fitment & Installation
This is a universal-fit muffler designed for street/strip vehicle applications, giving fabricators and enthusiasts flexibility when planning a custom exhaust routing. It features a 3.00-inch inlet diameter and carries an emission code of 5. Please note that the muffler uses new hangers, which are not included, and exhaust tips are sold separately, so you can tailor the final setup to match your build. Because it is a universal muffler, confirm your clearance and routing before installation to ensure the best fit.
Why the 40 Series Delta Flow
For enthusiasts who want the unmistakable Flowmaster growl with a more refined interior experience, the 40 Series Delta Flow delivers. The combination of increased scavenging, aggressive exterior tone, and heavy-duty aluminized steel construction makes it a dependable upgrade for performance-minded drivers. Whether you’re building a weekend cruiser or a street/strip project, this Flowmaster muffler pairs a bold sound with the durability you expect from the Flowmaster name.
