Flowmaster 40 Series Chambered Muffler

2005–2013 Chrysler 300 / 2009–2014 Dodge Challenger / 2006–2010 Dodge Charger / 2005–2008 Dodge Magnum

42443

Overview:

The Flowmaster 40 Series Chambered Muffler is engineered to deliver the iconic Flowmaster sound with an aggressive tone that enhances both the exterior and interior exhaust note of your vehicle. Designed specifically for select Chrysler and Dodge models, this muffler is ideal for enthusiasts seeking a bold, performance-oriented exhaust upgrade without sacrificing durability or quality. Whether you're upgrading your Chrysler 300, Dodge Challenger, Charger, or Magnum, the 40 Series muffler offers a perfect balance of sound and performance.

Built to provide a distinctive deep rumble, this muffler is a popular choice for drivers who want to stand out on the road while maintaining reliable exhaust flow and longevity. It’s a direct-fit solution that complements the muscle car heritage of these vehicles.

Key Features:

The Flowmaster 40 Series Chambered Muffler combines proven technology with robust construction to deliver a superior exhaust experience. Key features include:

• Original 40 Series aggressive sound signature, known for its deep, throaty tone
• Offset 2.25-inch inlet and outlet for versatile installation options
• Chambered design that balances sound and exhaust flow for performance gains
• Constructed from 16 gauge aluminized steel for corrosion resistance
• Fully MIG welded seams for enhanced durability and leak prevention
• Direct replacement muffler designed to fit specific Chrysler and Dodge models without modification
• Improves exhaust note without excessive drone inside the cabin
• Compatible with factory or aftermarket exhaust systems

Construction & Design:

The Flowmaster 40 Series muffler is crafted from high-quality 16 gauge aluminized steel, providing excellent resistance to rust and corrosion for long-lasting performance. Its chambered design utilizes internal baffles and chambers to create the signature Flowmaster sound while optimizing exhaust gas flow. The offset inlet and outlet tubes are precisely positioned to ensure a seamless fit within the factory exhaust routing.

All welds are completed using MIG welding techniques, which deliver strong, clean joints that withstand the rigors of daily driving and high-performance use. This construction approach ensures the muffler maintains structural integrity and sound quality over time.

Performance & Sound

The 40 Series muffler is renowned for its aggressive yet refined exhaust tone. It produces a deep, throaty rumble that enhances the muscle car character of your Chrysler or Dodge vehicle. Unlike straight-through mufflers that can be excessively loud or harsh, the chambered design of the 40 Series delivers a balanced sound that is both powerful and enjoyable for daily driving.

By improving exhaust flow efficiency, this muffler can also contribute to a slight performance increase, helping your engine breathe better and respond more crisply under acceleration.

Installation & Fitment:

This Flowmaster muffler is designed as a direct-fit replacement for the following vehicles: Chrysler 300 (2005–2013), Dodge Challenger (2009–2014), Dodge Charger (2006–2010), and Dodge Magnum (2005–2008). Installation typically requires no modifications, making it a straightforward upgrade for enthusiasts and mechanics alike.

It is compatible with factory exhaust hangers and mounting points, allowing for a secure and professional installation. Basic hand tools are sufficient for installation, though professional installation is recommended for optimal results.

What's Included:

• Flowmaster 40 Series Chambered Muffler (Part #42443)
• Installation instructions

Ideal For:

This muffler is perfect for muscle car enthusiasts and drivers who want to enhance their vehicle’s exhaust sound and performance without compromising durability. It suits those who appreciate the classic Flowmaster tone and seek a reliable, direct-fit upgrade for their Chrysler 300, Dodge Challenger, Charger, or Magnum.

Flowmaster is an iconic exhaust brand famous for signature exhaust tone and performance mufflers, as well as complete axle-back and cat-back systems. Built for muscle cars, trucks, and performance builds, Flowmaster systems are designed to improve flow and deliver the sound character enthusiasts chase.