Description
Overview
The Flowmaster 40 Series Delta Flow Exhaust Muffler is engineered to deliver that unmistakable aggressive tone muscle car owners crave, backed by proven performance technology. Designed with universal fitment in mind, this muffler suits popular Chevrolet, Ford, and GMC applications running 305, 350, 351, and 460 engines, making it a versatile choice for late model muscle car builds. Whether you’re upgrading a tired factory setup or piecing together a full custom car exhaust, this is a serious performance exhaust component built to last.
At the heart of this muffler is Flowmaster’s Delta Flow® technology. The two-chamber design uses Delta deflectors to generate increased scavenging, which translates to better performance and reduced interior sound. Compared to the standard 40 Series, you get a milder exterior tone and reduced interior resonance, striking the balance between an aggressive exhaust note and a livable in-cabin experience on the highway.
Built to Last
Durability is where this Flowmaster muffler shines. It’s constructed from 16 gauge 409S stainless steel and fully MIG welded for maximum strength against heat, road abuse, and the elements. A high-temperature paint finish adds another layer of protection, helping the muffler stand up to the demands of real-world driving mile after mile. This is the kind of build quality that makes Flowmaster mufflers a go-to name whenever enthusiasts shop for exhaust upgrades.
Key Highlights
- 40 Series Delta Flow two-chamber design with Delta deflectors for increased scavenging
- 3.00″ inlet diameter with a dual outlet configuration
- 16 gauge 409S stainless steel construction, fully MIG welded
- High-temperature paint finish for lasting protection
- Aggressive sound level with reduced interior resonance
- Universal fitment for a wide range of applications
Fitment & Installation
This muffler is a universal-fit unit ideal for Chevrolet, Ford, and GMC vehicles equipped with 305, 350, 351, and 460 engines. It features a 3.00-inch inlet diameter and a dual outlet location, giving your exhaust system the flow characteristics that support a strong-sounding, high-performing setup. Installation uses new hangers (not included), and exhaust tips are sold separately, so you can tailor the finished look of your car exhaust to match your build.
Whether you’re chasing a genuine performance exhaust upgrade or completing a cat back exhaust system project, the Flowmaster 40 Series Delta Flow muffler brings the durability, flow, and attitude that define a true magnaflow-caliber and Flowmaster muffler upgrade. Pair it with the right piping and tips to build the exhaust automobile setup you’ve been planning. Please note the California Proposition 65 warning applies to this product (Emission Code 5).
