MagnaFlow Street Series Cat-Back Exhaust

1998 Jeep Grand Cherokee 5.2L V8, 5.9L V8

Part #: 15858

Overview

The MagnaFlow Street Series Cat-Back Exhaust System is a precision-engineered upgrade designed specifically for the 1998 Jeep Grand Cherokee models equipped with 5.2L and 5.9L V8 engines. This cat-back system replaces the factory exhaust components from just behind the catalytic converter to the rear exit, delivering improved exhaust flow, enhanced throttle response, and a refined yet aggressive exhaust tone. It is ideal for Jeep owners seeking a balanced combination of performance, style, and everyday drivability without compromising reliability.

Whether you want to elevate your Jeep’s sound profile or gain a noticeable boost in exhaust efficiency, this direct-fit system offers a seamless installation experience and long-lasting durability. It caters to enthusiasts who appreciate a sporty exhaust note that commands attention without overwhelming interior cabin noise.

Key Features

Built with advanced engineering and premium materials, the MagnaFlow Street Series Cat-Back Exhaust offers a range of benefits that enhance both performance and aesthetics:

• Mandrel-bent 2.5-inch main piping for smooth, unrestricted exhaust flow
• Single straight-through muffler design to reduce backpressure and maximize power delivery
• Polished 3.5-inch double-wall angle cut rolled edge exhaust tips for a sleek, durable finish
• Cat-back layout replacing stock components from the catalytic converter to the rear exit
• Direct-fit design developed through extensive 3D scanning for precise fitment
• Manufactured using CNC robotic techniques ensuring consistent quality and weld integrity
• Constructed from corrosion-resistant stainless steel for long-lasting performance and appearance
• Backed by MagnaFlow’s 1-year limited finish warranty and limited lifetime construction warranty

Construction & Design

This exhaust system is crafted from premium stainless steel, engineered to endure daily driving conditions and resist corrosion over time. The mandrel-bent tubing maintains a consistent diameter through bends, preventing flow restrictions and optimizing exhaust gas evacuation. Precision robotic manufacturing ensures every weld and component meets strict quality standards, resulting in a system that fits perfectly and performs reliably.

The polished double-wall exhaust tips not only enhance the Jeep’s rear appearance but also resist heat discoloration and environmental wear, maintaining their shine mile after mile.

Performance & Sound

The MagnaFlow Street Series Cat-Back Exhaust is dyno-tested to improve exhaust flow, which can lead to enhanced throttle response and overall engine efficiency. Its straight-through muffler design produces a deep, resonant exhaust tone that is powerful yet controlled, delivering a moderate exterior sound level and a mild interior noise profile. This sound balance ensures your Jeep stands out with a commanding presence without being intrusive during daily driving.

Installation & Fitment

Designed as a direct-fit cat-back system, this MagnaFlow exhaust installs easily using existing mounting points and hardware, requiring no cutting, welding, or modifications. The kit fits 1998 Jeep Grand Cherokee models equipped with 5.2L and 5.9L V8 engines, including Laredo, Limited, and 5.9 Limited trims. Whether you are a DIY enthusiast or a professional installer, this system offers a straightforward upgrade that enhances your Jeep’s performance and style.

What's Included

• Mandrel-bent 2.5-inch stainless steel main piping
• Single straight-through muffler
• 3.5-inch polished double-wall angle cut rolled edge exhaust tip
• All necessary clamps and hardware for installation
• Detailed installation instructions

Ideal For

This MagnaFlow Street Series Cat-Back Exhaust is perfect for Jeep Grand Cherokee owners who want to improve their vehicle’s performance and sound without sacrificing daily drivability. It suits enthusiasts looking for a durable, high-quality exhaust upgrade that delivers a sporty yet refined exhaust note and enhanced exhaust flow. Whether used for daily commuting, weekend adventures, or light off-roading, this system adds both style and substance to your Jeep.

MagnaFlow is a performance exhaust manufacturer best known for cat‑back and axle‑back systems, mufflers, and catalytic converters engineered for quality sound and improved flow. Their vehicle-specific exhaust options span muscle, import, and truck applications—making MagnaFlow a staple upgrade when you want a deeper tone, cleaner fitment, and a proven performance-focused exhaust setup.