Magnaflow Exhaust Muffler

2011–2025 Subaru Forester / Subaru Impreza 2.5L

Part #: 13278

Overview

The MagnaFlow 4x9in Oval Multi-Chamber Performance Exhaust Muffler is designed to enhance the sound and performance of your vehicle’s exhaust system. Crafted with precision and durability in mind, this muffler is ideal for enthusiasts seeking a deeper, more aggressive exhaust note while supporting improved exhaust flow. Whether you're looking to upgrade your daily driver or enhance your vehicle's sound profile for spirited driving, this muffler offers a perfect blend of style, durability, and performance.

Constructed from high-quality stainless steel and manufactured using CNC robotic techniques, the MagnaFlow 13278 muffler ensures long-lasting performance and resistance to corrosion. Its multi-chamber design helps reduce unwanted resonance, providing a refined yet sporty exhaust tone that elevates your driving experience. This muffler is suitable for those who want a reliable upgrade that combines performance gains with a distinctive sound.

Key Features

The MagnaFlow 13278 muffler incorporates several advanced features designed to optimize exhaust flow and durability:

• Constructed from durable stainless steel, ensuring corrosion resistance and longevity in all driving conditions.
• Multi-chamber design with a combination of perforated tubing and baffles to effectively reduce unwanted resonance and drone.
• Reversible reflection style configuration allows for flexible installation options and sound tuning.
• Precision CNC manufacturing guarantees consistent quality and fitment for a seamless upgrade.
• Optimized internal flow paths to help support increased exhaust flow, which can contribute to slight performance improvements.
• Backed by MagnaFlow’s limited lifetime warranty, providing confidence in the product’s durability and performance.
• Designed to complement a wide range of vehicle setups, enhancing both sound and exhaust efficiency.

Construction & Design

The MagnaFlow 13278 muffler features a robust stainless steel construction, ensuring resistance to rust and corrosion even in harsh environments. Its multi-chamber design utilizes perforated tubing and baffling to effectively manage sound waves, reducing resonance and unwanted drone while delivering a deep, aggressive exhaust tone. The oval shape and precise CNC manufacturing process ensure a perfect fit and finish, making installation straightforward and reliable. This design not only enhances durability but also contributes to a sleek, professional appearance under your vehicle.

Installation & Fitment

The MagnaFlow 13278 muffler is designed as a direct bolt-on replacement for compatible vehicles. Its universal oval shape and CNC precision manufacturing ensure a straightforward installation process, often requiring only basic hand tools. No cutting, welding, or complex modifications are typically necessary, making it suitable for DIY enthusiasts and professional installers alike. The reversible reflection style design provides additional flexibility in tuning the sound profile to your preference.

• Simple bolt-on installation using factory mounting points.
• No cutting, drilling, or tuning required in most applications.
• Compatible with a variety of vehicle makes and models, primarily those with a 2.5L engine.

What's Included

• Complete stainless steel exhaust muffler with multi-chamber design
• All necessary clamps and hardware for installation
• Installation instructions

Ideal For

• Performance enthusiasts seeking a deeper, more aggressive exhaust tone
• Drivers looking to upgrade their vehicle’s exhaust system for improved flow and durability
• Anyone wanting a reliable, long-lasting muffler backed by a lifetime warranty