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Flowmaster 40 Series Chambered Muffler 40 Series - 2.25 Offset In / 2.25 Offset Out - Aggressive Sound - 42443

$101.95
SKU:
42443
Weight:
8.50 LBS
Shipping:
Calculated at Checkout
Flowmaster 40 Series Chambered Muffler 40 Series - 2.25 Offset In / 2.25 Offset Out - Aggressive Sound - 42443

Description

The Flowmaster Original 40 Series Chambered Muffler is one of the most iconic performance mufflers ever created, delivering the unmistakable aggressive sound that made Flowmaster famous. Engineered for drivers who want a deep, powerful exterior tone with a noticeable interior resonance, this muffler is ideal for street/strip, muscle car, truck, SUV, and hot rod applications.

Built from fully MIG-welded 16-gauge aluminized steel, the 40 Series is designed for long-term durability and consistent performance. This model features a 2.25-inch offset inlet and 2.25-inch offset outlet with slip-fit connections, making it easy to integrate into custom or universal exhaust setups. Its chambered design enhances exhaust flow while producing the classic, aggressive Flowmaster note that enthusiasts demand.

This muffler is a perfect choice for anyone seeking maximum sound, proven reliability, and high-performance exhaust characteristics.

Features

  • Constructed from durable 16-gauge aluminized steel

  • Fully MIG welded for strength and longevity

  • Produces an aggressive exterior exhaust tone

  • Noticeable interior resonance for a classic muscle sound

  • Chambered design for improved performance and airflow

  • High-temperature black paint finish

  • Ideal for street/strip, muscle cars, trucks, hot rods, and off-road builds

Specifications

  • Muffler Series: Original 40 Series

  • Muffler Type: Chambered

  • Inlet Diameter: 2.25 in

  • Outlet Diameter: 2.25 in

  • Inlet Location: Offset

  • Outlet Location: Offset

  • Inlet Connection: Slip-Fit / Clamp-On / Weld-On

  • Outlet Connection: Slip-Fit

  • Body Material: Aluminized Steel

  • Body Height: 4.00 in

  • Body Width: 9.50 in

  • Body Length: 13.00 in

  • Overall Length: 19.00 in

  • Finish: High-Temperature Black Paint

  • Shape: Oval

  • Sound Level: Aggressive

  • Grade Type: Performance

  • Fitment: Universal

  • Vehicle Types: Muscle cars, late-model muscle cars, street rods, trucks/SUVs, street/strip builds

Fitment 

Universal fitment
Fits vehicles requiring a 2.25-inch offset inlet
Fits vehicles requiring a 2.25-inch offset outlet
Compatible with muscle cars
Compatible with late-model muscle cars
Compatible with street rods
Compatible with street/strip applications
Compatible with trucks and SUVs

The Original 40 Series remains the go-to choice for enthusiasts who want unmatched sound, classic Flowmaster performance, and a durable muffler built to handle years of street or track use.