MagnaFlow Exhaust Muffler

2011–2025 Universal Fitment

Part #: 12289

Overview

The MagnaFlow 5x24x8in. Oval Straight-Through Performance Exhaust Muffler 12289 is designed to elevate your vehicle's exhaust system with a combination of signature sound and proven performance. Crafted for enthusiasts who seek a deep, aggressive exhaust note along with improved flow and horsepower, this muffler is a versatile upgrade suitable for a wide range of vehicles. Whether you're looking to enhance your daily driver or boost your vehicle's sound profile for spirited driving, this muffler delivers a balanced blend of performance and sound quality.

Constructed with high-quality materials and engineered for durability, the MagnaFlow muffler helps support increased horsepower and torque while maintaining a refined, aggressive exhaust tone. Its universal design allows for flexible installation options, making it an ideal choice for custom exhaust builds or replacement applications. If you're passionate about improving your vehicle's exhaust flow and sound, this muffler offers a straightforward upgrade that combines performance with a signature MagnaFlow sound.

Key Features

The MagnaFlow 12289 features several innovative design elements that set it apart from standard mufflers:

• Constructed with a free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill, ensuring optimal exhaust flow and durability.
• Oval shape measuring 5 inches by 8 inches provides a sleek, performance-oriented look while fitting a variety of vehicle configurations.
• Reversible, universal 3/3 inch inlet/outlet layout offers flexible installation options, allowing you to orient the muffler in the most suitable configuration for your vehicle.
• Engineered to produce a signature MagnaFlow exhaust sound—deep, aggressive, yet refined—perfect for enthusiasts seeking an enhanced auditory experience.
• Designed for durability and corrosion resistance, ensuring long-lasting performance even in demanding driving conditions.
• Optimized for improved exhaust flow, supporting increased horsepower and torque without sacrificing reliability or sound quality.
• Suitable for a variety of applications, from street performance to custom exhaust setups, making it a versatile upgrade for many vehicles.

Construction & Design

The MagnaFlow 12289 muffler is built with a focus on quality and performance. Its stainless steel construction ensures resistance to rust and corrosion, providing longevity and consistent performance over time. The straight-through perforated core design minimizes backpressure, allowing exhaust gases to flow freely and efficiently. This design not only enhances power output but also contributes to the muffler's distinctive sound profile.

The oval shape is engineered for optimal fitment and aesthetic appeal, complementing the look of performance-oriented vehicles. The reversible inlet/outlet configuration adds installation flexibility, enabling you to position the muffler in the most effective orientation for your exhaust system layout. Overall, the design choices in this muffler aim to maximize durability, performance, and sound quality, making it a reliable upgrade for enthusiasts and daily drivers alike.

Installation & Fitment

This universal muffler is designed for straightforward bolt-on installation. Its reversible inlet/outlet layout allows for flexible positioning, simplifying the process of integrating it into your existing exhaust system. No cutting, drilling, or complex modifications are generally required, making it suitable for DIY enthusiasts and professional installers alike. Proper fitment depends on your vehicle's specific exhaust configuration, but the universal design ensures broad compatibility.

• Reversible inlet/outlet for flexible installation
• Designed for easy bolt-on replacement or custom exhaust builds
• No cutting or welding required in most applications

What's Included

• MagnaFlow 5x24x8in. Oval Straight-Through Performance Exhaust Muffler
• All necessary clamps and hardware for installation
• Installation instructions

Ideal For

• Performance enthusiasts seeking a deep, aggressive exhaust sound
• Drivers looking to improve exhaust flow and engine efficiency
• Custom exhaust builders and DIY installers
• Anyone wanting a durable, high-quality muffler with versatile installation options