MagnaFlow Catalytic Converter

2001–2004 Jeep Grand Cherokee Laredo, Limited, Overland, Special Edition

459003

Overview:

The MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 459003 is engineered specifically for Jeep Grand Cherokee models from 2001 to 2004, including Laredo, Limited, Overland, and Special Edition trims. Designed to replace your factory catalytic converter, this direct-fit unit helps maintain optimal emissions control and keeps your check engine light off. It is an ideal solution for Jeep owners seeking a reliable, legal, and long-lasting replacement part that meets or exceeds California Air Resource Board (CARB) standards.

This catalytic converter is perfect for DIY enthusiasts and professional mechanics alike, offering a straightforward installation process without the need for cutting or welding. With its precise fit and durable construction, it ensures your vehicle continues to perform efficiently while complying with strict emissions regulations.

Key Features:

MagnaFlow’s catalytic converter combines advanced engineering and quality materials to deliver dependable performance and compliance. Key features include:

• CARB compliant for legal use in California and other CARB-restricted states including Colorado, New York, and Maine
• Direct-fit design tailored specifically for 2001–2004 Jeep Grand Cherokee models
• Mandrel-bent tubing to eliminate flow restrictions and maintain OEM-like exhaust geometry
• High-strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance
• Durable 308 stainless steel MIG welds for long-lasting structural integrity
• Expertly crafted to replicate OEM flow dynamics, preserving factory performance and fuel efficiency
• Includes essential gaskets and hardware to simplify installation
• Designed using state-of-the-art 3D scanning for precise fit and function
• Tested to meet or exceed California Air Resource Board requirements

Construction & Design:

This catalytic converter is constructed from premium 16 gauge 409 stainless steel tubing, chosen for its excellent resistance to rust and corrosion, ensuring a long service life even under harsh driving conditions. The mandrel-bent tubing maintains smooth, unrestricted exhaust flow by preserving the original equipment manufacturer’s (OEM) design and geometry. This careful engineering helps sustain optimal engine operation and fuel economy.

Welds are performed using durable 308 stainless steel MIG welding techniques, providing strong, reliable joints that withstand thermal expansion and vibration. The use of advanced 3D scanning technology during design guarantees a precise fit that matches the factory part, making replacement seamless and reliable.

Installation & Fitment:

The MagnaFlow direct-fit catalytic converter is designed for easy installation with no cutting, welding, or modifications required when installed on compatible Jeep Grand Cherokee models from 2001 to 2004. The package includes all necessary gaskets and hardware, streamlining the replacement process for both professional installers and knowledgeable DIYers. Proper tools are recommended to ensure a secure and leak-free fit.

This part fits the following Jeep Grand Cherokee trims and model years:

• Laredo 2001–2004
• Limited 2001–2004
• Overland 2003–2004
• Special Edition 2004

What's Included:

• MagnaFlow direct-fit catalytic converter (Part #459003)
• Essential installation gaskets
• Mounting hardware

Ideal For:

This catalytic converter is ideal for Jeep Grand Cherokee owners who need a reliable, CARB-compliant replacement part that maintains factory emissions standards and vehicle performance. It suits those looking to restore their vehicle’s emissions system to proper working order without compromising fuel economy or engine efficiency. Perfect for both professional shops and experienced DIY installers.

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, 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. This ensures your vehicle remains compliant with state and federal emissions regulations while delivering dependable performance.

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.