MagnaFlow Direct Fit Catalytic Converter

2002–2004 Jeep Grand Cherokee 4.7L V8

Part #: 458000

Overview

The MagnaFlow Direct Fit Catalytic Converter (Part #458000) is engineered specifically for 2002 to 2004 Jeep Grand Cherokee models equipped with the 4.7L V8 engine, including Laredo, Limited, Overland, and Special Edition trims. This California Grade CARB-compliant converter is designed to maintain your vehicle’s emissions compliance while ensuring optimal exhaust flow and factory-level performance. It serves as a reliable replacement that meets or exceeds stringent emissions standards without requiring any modifications.

Ideal for Jeep owners who want to restore their vehicle’s emissions system to OEM specifications, this catalytic converter offers a direct-fit solution that keeps the check engine light off and supports smooth engine operation. Its precision engineering and durable construction provide long-lasting performance and peace of mind.

Key Features

Combining advanced manufacturing technology with quality materials, this MagnaFlow catalytic converter delivers dependable performance and legal compliance. Key features include:

• California Grade CARB compliant for legal use in all 50 states, including California, Colorado, New York, and Maine
• Direct-fit design requiring no cutting or welding for a hassle-free installation
• Free-flowing mandrel-bent tubing to optimize exhaust flow and reduce backpressure
• Highly corrosion-resistant stainless steel construction for enhanced durability
• Replicates original equipment spun body design with a single laser fusion weld to minimize leaks
• Compact, low-mass design that improves thermal efficiency and catalytic performance
• Precision stamped collector for improved engine efficiency and fuel economy
• OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel to reduce noise and vibration
• Includes essential gaskets and hardware for a complete, secure installation
• Compatible with OE parts 5208 0358AA and 5208 0378AC

Construction & Design

Crafted from high-strength 16 gauge 409 stainless steel tubing, this catalytic converter is built to withstand harsh exhaust conditions while resisting corrosion. The spun body design is precision-engineered to replicate the original equipment manufacturer’s flow dynamics, ensuring factory-level performance and fuel efficiency are maintained.

A single laser fusion weld on the converter body reduces the risk of leaks, while durable 308 stainless steel MIG welds enhance structural integrity for long service life. The compact design promotes better thermal management, which is critical for maintaining catalytic efficiency and emissions control.

Installation & Fitment

This direct-fit catalytic converter is designed for straightforward installation on 2002 to 2004 Jeep Grand Cherokee 4.7L V8 models, including Laredo, Limited, Overland, and Special Edition trims. The design eliminates the need for cutting or welding, allowing for a clean, hassle-free replacement using standard automotive tools. Essential gaskets and mounting hardware are included to ensure a secure, leak-free fit.

MagnaFlow’s use of advanced 3D scanning technology guarantees precise fitment that matches or exceeds OEM specifications, making this converter a reliable and convenient upgrade or replacement part.

What's Included

• MagnaFlow Direct-Fit Catalytic Converter (Part #458000)
• Essential installation gaskets
• Mounting hardware

Ideal For

This catalytic converter is ideal for Jeep Grand Cherokee owners from model years 2002 through 2004 who require a CARB-compliant replacement part that ensures emissions compliance and maintains factory performance. It is well-suited for those performing routine emissions system repairs or restoring their vehicle’s exhaust system to OEM standards without compromising quality or fitment.

Emissions Note

This MagnaFlow catalytic converter is California Air Resource Board (CARB) compliant and legal for sale and use in all 50 states, including California and other CARB-restricted states such as Colorado, New York, and Maine. Installation is permitted only if the vehicle’s Executive Order (EO) number and Engine Family Number (EFN) appear in this converter’s CARB Executive Order documentation. MagnaFlow provides assurance of genuine compliance while delivering a durable, high-quality catalytic converter designed to meet stringent emissions standards.

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.