Magnaflow Exhaust Muffler

2011–2025 Universal Fitment

Part #: 12298

Overview

The MagnaFlow 5x18x8-inch Oval Straight-Through Performance Exhaust Muffler 12298 is designed to elevate your vehicle’s exhaust system with a combination of aggressive sound and improved flow. Crafted for automotive enthusiasts who seek a balance of performance, durability, and a signature exhaust note, this muffler is suitable for a wide range of applications where a high-performance upgrade is desired. Whether you're looking to enhance your daily driver or add a sporty tone to your build, this muffler delivers on both sound and function.

Built with quality and precision, the MagnaFlow muffler helps support increased horsepower and torque by reducing exhaust backpressure. Its free-flowing design ensures your engine breathes more efficiently, resulting in better throttle response and a more engaging driving experience. The muffler’s versatile layout allows for flexible installation options, making it a popular choice among performance enthusiasts and mechanics alike.

Key Features

The MagnaFlow 12298 features a high-quality construction that emphasizes durability and performance. Key features include:

• Constructed with a perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill for optimal sound and flow characteristics.
• Reversible, universal 3-inch inlet and outlet diameter layout allows for flexible installation in various vehicle configurations.
• Oval shape measuring 5 inches by 18 inches with an 8-inch length, designed to fit a wide range of applications while maintaining a sleek, performance-oriented look.
• Engineered to produce a deep, aggressive exhaust tone that enhances your vehicle’s sound profile without excessive drone or noise.
• Made from durable stainless steel to withstand harsh conditions and ensure long-lasting performance.
• Proven to improve exhaust flow, supporting increased power output and better overall engine efficiency.
• Designed for easy installation with minimal modifications required, compatible with many custom and factory exhaust setups.
• Ideal for street performance builds, off-road vehicles, or any application where a balance of sound and flow is desired.

Construction & Design

The MagnaFlow 12298 muffler is built with a focus on quality and performance. Its stainless steel perforated core is engineered for maximum durability and optimal exhaust flow, helping to reduce backpressure and improve engine efficiency. The stainless steel mesh and acoustic fiber fill work together to produce a deep, resonant exhaust tone that enhances your vehicle’s sound signature. The oval shape not only provides a sleek aesthetic but also allows for versatile mounting options, fitting seamlessly into many custom exhaust configurations.

The reversible inlet/outlet design offers installation flexibility, making it suitable for various vehicle layouts and orientations. The high-quality materials and craftsmanship ensure that this muffler maintains its performance and appearance over time, even in demanding driving conditions.

Installation & Fitment

This muffler features a universal, reversible 3-inch inlet and outlet diameter, making it adaptable to many custom and factory exhaust systems. Its straightforward design allows for bolt-on installation with basic tools, and no cutting or welding is typically required. The durable construction ensures a secure fit and long-lasting performance, making it a popular upgrade for those looking to improve their vehicle’s exhaust sound and flow with minimal hassle.

• Reversible, universal 3-inch inlet/outlet layout for flexible installation
• Designed for easy bolt-on installation with standard exhaust clamps and hardware
• No cutting, drilling, or tuning required in most applications

What's Included

• MagnaFlow 5x18x8-inch Oval Straight-Through Performance Muffler
• All necessary clamps and hardware for installation
• Installation instructions

Ideal For

• Performance enthusiasts seeking improved exhaust flow and sound
• Street and off-road vehicles requiring a durable, high-quality muffler
• Drivers looking for a deep, aggressive exhaust tone without excessive drone