Description
Overview
The Flowmaster Original 40 Series muffler is the muffler that started it all, delivering the unmistakable, aggressive tone that made Flowmaster a household name in performance exhaust. Built for street rods and enthusiasts who want a bold, deep character both inside and outside the cabin, this muffler brings the original Flowmaster sound to your exhaust system without compromise. Whether you’re upgrading a weekend cruiser or dialing in a full car exhaust build, the 40 Series is a proven choice when you shop for exhaust that means business.
Constructed of 16 gauge aluminized steel and fully MIG welded, this Flowmaster muffler is engineered for maximum durability and long service life. A high-temperature paint finish helps it stand up to the heat and demands of an active exhaust automobile setup, so it looks and performs the part mile after mile.
Key Benefits
The Original 40 Series is tuned to produce an aggressive sound level, giving your ride the raw, throaty exhaust note Flowmaster is known for. Its universal fitment and dual inlet / dual outlet configuration make it a versatile centerpiece for a wide range of performance exhaust and cat back exhaust system projects, letting you integrate it into your build the way you want.
- Iconic, aggressive interior and exterior Flowmaster tone
- Rugged 16 gauge aluminized steel construction
- Fully MIG welded for maximum durability
- High-temperature paint finish for heat resistance
- 2.50″ inlet diameter with dual inlet and dual outlet locations
- Universal fitment for flexible street rod and custom builds
Sound & Performance
If you’re chasing that original Flowmaster sound, this is the muffler for you. The 40 Series is designed to deliver an aggressive exterior and interior tone, making it a standout among mufflers for drivers who want their exhaust system to be heard. As one of the most recognized magnaflow muffler and Flowmaster muffler alternatives in the aftermarket, the Original 40 Series remains a benchmark for classic muscle character in a catback exhaust or custom cat back muffler system.
Fitment & Configuration
This muffler carries a universal fitment and is well suited to street rod applications. It features a 2.50″ inlet diameter, dual inlet location, and dual outlet location, giving builders flexibility when routing a complete exhaust system. Emission code is listed as 5. Please note that exhaust tips are sold separately, allowing you to finish your build with the tip style that matches your setup.
From bold sound to durable construction, the Flowmaster Original 40 Series muffler is a dependable foundation for anyone building an aggressive performance exhaust. Choose the configuration that fits your project and bring the original Flowmaster attitude to your car exhaust.
