MagnaFlow

2011–2025 Subaru Forester / Subaru Outback 2.5L

Part #: 14221

Overview

The MagnaFlow 5x14x8in. Oval Straight-Through Performance Exhaust Muffler 14221 is designed to enhance your vehicle's exhaust system with a combination of signature sound and proven performance. Crafted for enthusiasts seeking a balance of aggressive tone and reliable flow, this muffler is an excellent upgrade for daily drivers and spirited enthusiasts alike. Its innovative design helps support increased horsepower and torque while delivering a refined, deep exhaust note that elevates your driving experience.

Built with quality and durability in mind, the MagnaFlow 14221 muffler is suitable for Subaru Forester and Outback models equipped with a 2.5L engine from 2011 to 2025. Whether you're looking to improve your vehicle's sound, optimize exhaust flow, or simply upgrade your existing system, this muffler offers a straightforward, bolt-on installation that enhances both performance and aesthetics.

Key Features

The MagnaFlow 14221 features a meticulously engineered design that combines performance with durability. Its core components include:

• High-quality, perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill, providing a free-flowing path for exhaust gases while dampening unwanted noise.
• Reversible 3/2.5-inch inlet/outlet layout, offering versatile installation options to fit various exhaust configurations.
• Oval-shaped body measuring 5x8 inches with a brushed finish, delivering a sleek, premium aesthetic that complements your vehicle's undercarriage.
• Lightweight construction optimized for performance without sacrificing durability, making it ideal for daily driving and spirited use.
• Designed to produce a deep, aggressive exhaust tone that enhances your vehicle's character without excessive drone or noise.
• Manufactured with stainless steel materials that resist corrosion and withstand harsh driving conditions, ensuring long-lasting performance.
• Dyno-proven to improve exhaust flow, supporting increased horsepower and torque over the factory muffler.

Construction & Design

The MagnaFlow 14221 muffler is built with a focus on performance and longevity. Its straight-through perforated stainless steel core allows for maximum exhaust flow, reducing backpressure and improving engine efficiency. The acoustic fiber fill and stainless steel mesh work together to absorb and dampen sound waves, resulting in a deep, resonant exhaust note that is both refined and aggressive. The oval-shaped body with a brushed finish not only adds a stylish touch but also resists corrosion, making it suitable for a variety of driving environments. The reversible inlet/outlet design provides installation flexibility, ensuring compatibility with a wide range of exhaust setups.

Installation & Fitment

The MagnaFlow 14221 muffler is designed for a straightforward bolt-on installation. It mounts directly to your existing exhaust system using the factory or compatible clamps and hardware. No cutting, welding, or complex modifications are required, making it an accessible upgrade for most DIY enthusiasts and professional installers alike. The reversible inlet/outlet configuration provides added flexibility to ensure a proper fit with your vehicle's exhaust layout. For optimal performance, it is recommended to verify compatibility with your specific Subaru model and year before installation.

What's Included

• MagnaFlow 5x8x14in. Oval Straight-Through Performance Exhaust Muffler (14221)
• All necessary clamps and hardware for installation
• Installation instructions

Ideal For

• Subaru Forester and Outback owners seeking improved exhaust sound and performance
• Enthusiasts looking for a durable, corrosion-resistant muffler upgrade
• Drivers wanting a deep, aggressive exhaust tone without excessive noise
• Performance-minded individuals aiming to support increased horsepower and torque