MagnaFlow Performance Exhaust Muffler

2011–2025

Part #: 18115

Overview

The MagnaFlow 3.5in. Round Glasspack Performance Exhaust Muffler is designed to deliver a deep, aggressive sound that enthusiasts love. Perfect for those looking to enhance their vehicle's exhaust note while supporting improved flow and performance, this muffler is an excellent choice for street-driven cars and hot rods alike. Its classic glasspack design provides a distinctive tone that turns heads and adds a touch of vintage muscle car character to your ride.

Built with performance in mind, this muffler helps support increased horsepower and torque by reducing exhaust backpressure and promoting freer flow through its straight-through, reversible design. Whether you're upgrading for sound, style, or performance, the MagnaFlow Glasspack Muffler offers a reliable, durable solution that complements a variety of vehicle builds.

Key Features

The MagnaFlow 18115 features several technical and design elements that make it a standout choice for performance enthusiasts:

• Constructed with a lightweight, durable stainless steel body that resists corrosion and withstands high temperatures, ensuring long-lasting performance.
• The round muffler body measures 3.5 inches in diameter with a 12-inch length, providing a bold, classic appearance and deep exhaust tone.
• Features a free-flowing, straight-through design with a reversible configuration, allowing for customizable sound and flow characteristics.
• Single-stage packing enhances durability and maintains the muffler's signature sound over time.
• Satin finish offers a sleek, polished look that complements any engine bay or undercarriage aesthetic.
• Optimized for improved exhaust flow, helping to support increased power output and better throttle response.
• Designed for easy installation with standard 2.25-inch inlet and outlet diameters, compatible with a wide range of vehicle exhaust systems.
• Engineered to produce a deep, classic glasspack sound that is loud enough to turn heads but refined enough for daily driving.
• Dyno-proven performance gains support a more aggressive exhaust note and enhanced vehicle responsiveness.

Construction & Design

The MagnaFlow Glasspack Muffler is built with high-quality stainless steel, ensuring resistance to rust and corrosion even in harsh driving conditions. Its round, free-flowing design is optimized for maximum sound and performance, utilizing mandrel bends and TIG welding for precise fitment and durability. The single-stage packing material is carefully selected to maintain the muffler's signature tone over time, while the satin finish adds a sleek, professional appearance.

This weight-optimized glasspack is engineered to bring out the inner hot rod in your vehicle, providing a classic, deep exhaust tone that enhances your driving experience. Its straightforward, bolt-on design makes installation simple and hassle-free, with no modifications required for most applications.

Installation & Fitment

The MagnaFlow Glasspack Muffler is a bolt-on upgrade that fits most vehicles with a 2.25-inch inlet and outlet diameter. Its straightforward design allows for easy installation using standard exhaust clamps and hardware. No cutting, welding, or complex modifications are generally required, making it suitable for DIY installation or professional service. Ensure compatibility with your vehicle's exhaust system before installation.

• Simple bolt-on installation with existing exhaust system components
• No cutting, drilling, or tuning required in most cases

What's Included

• MagnaFlow 3.5in. Round Glasspack Performance Exhaust Muffler
• All necessary clamps and hardware for installation
• Instruction manual for proper mounting and fitment

Ideal For

• Performance enthusiasts seeking a deep, classic exhaust tone
• Hot rod and muscle car builders looking for a vintage sound and style
• Drivers wanting to enhance their vehicle's exhaust flow and support minor power gains
• Anyone aiming for a durable, corrosion-resistant muffler with a timeless appearance