MagnaFlow Performance Exhaust Muffler

2011–2025 Subaru Forester / Subaru Outback 2.5L

Part #: 14263

Overview

The MagnaFlow 5x8in. Oval Straight-Through Performance Exhaust Muffler 14263 is designed to elevate your vehicle’s exhaust system with signature sound and proven performance. Crafted for enthusiasts who seek a combination of aggressive tone, enhanced airflow, and reliable durability, this muffler is an excellent upgrade for daily drivers, spirited street enthusiasts, and off-road adventurers alike. Its innovative design helps support increased horsepower and torque, delivering a more dynamic driving experience while maintaining a refined aesthetic.

Whether you're looking to improve your Subaru's exhaust note or optimize exhaust flow for better performance, the MagnaFlow 14263 muffler offers a perfect balance of sound, style, and efficiency. Its straightforward installation process makes it an ideal choice for those wanting a high-quality upgrade without extensive modifications.

Key Features

The MagnaFlow 14263 features a range of advanced design elements that contribute to its exceptional performance and durability:

• Constructed with a perforated stainless steel core wrapped in acoustic fiber fill, this muffler ensures a free-flowing exhaust path that reduces backpressure and supports increased engine output.
• The stainless steel mesh wrapping enhances durability and helps maintain consistent sound quality over time, resisting corrosion and heat damage.
• The oval-shaped body measures 5 inches by 8 inches, providing a sleek, premium aesthetic that complements your vehicle’s appearance.
• The weight-optimized, reversible 2.5-inch inlet and outlet diameters allow for flexible installation options and compatibility with various exhaust configurations.
• Brushed finish adds an elevated look, matching well with aftermarket or OEM exhaust components for a cohesive style.
• Designed for a deep, aggressive exhaust tone that enhances your vehicle’s character without excessive drone or noise pollution.
• Dyno-proven to improve exhaust flow, supporting better throttle response and overall engine efficiency.
• Made from high-quality stainless steel to ensure long-lasting performance in demanding driving conditions.
• Reversible inlet/outlet design simplifies installation and allows for versatile positioning within your exhaust system.

Construction & Design

The MagnaFlow 14263 muffler is built with precision craftsmanship, utilizing a straight-through perforated stainless steel core that maximizes exhaust flow and minimizes turbulence. The core is wrapped in acoustic fiber fill, which dampens unwanted noise while allowing the muffler to produce a deep, resonant tone. Its oval shape not only provides a distinctive look but also helps optimize sound distribution and exhaust flow.

The stainless steel mesh wrapping adds an extra layer of protection against corrosion and heat, ensuring the muffler maintains its performance and appearance over time. The brushed finish lends an upscale aesthetic that complements both factory and aftermarket exhaust systems. Its reversible inlet and outlet design offers installation flexibility, making it suitable for a variety of vehicle setups.

Installation & Fitment

The MagnaFlow 14263 muffler is designed as a bolt-on replacement for compatible Subaru models equipped with a 2.5L engine. Its reversible 2.5-inch inlet and outlet diameters simplify installation, often requiring only basic hand tools. No cutting, welding, or complex modifications are typically necessary, and the muffler can be installed in a matter of hours with standard exhaust clamps and hardware. For optimal results, professional installation is recommended to ensure proper fitment and sealing.

• Replaces factory muffler with a high-performance, straight-through design
• No cutting or welding required in most applications
• Compatible with Subaru Forester, Outback, and similar models with 2.5L engines

What's Included

• MagnaFlow 5x8in. Oval Performance Exhaust Muffler (14263)
• All necessary clamps and hardware for installation
• Installation instructions

Ideal For

• Street performance enthusiasts seeking a deeper exhaust tone
• Subaru owners looking to improve exhaust flow and engine response
• Off-road adventurers wanting a durable, corrosion-resistant muffler
• Drivers aiming for a stylish upgrade with proven performance benefits