MagnaFlow Direct Fit Catalytic Converter

2000 Jeep Grand Cherokee 4.0L I6

Part #: 447187

Overview

The MagnaFlow Direct Fit Catalytic Converter 447187 is engineered specifically for the 2000 Jeep Grand Cherokee 4.0L inline-six engine, providing a reliable replacement that meets stringent emissions standards. Designed to maintain your vehicle’s optimal engine performance while keeping the check engine light off, this catalytic converter is an ideal solution for Jeep owners seeking a seamless, direct-fit upgrade without the need for cutting or welding.

Built to restore your Jeep’s emissions system to factory specifications, this converter ensures compliance with California Air Resource Board (CARB) regulations and supports efficient exhaust flow for improved fuel economy. Whether you are replacing a worn or damaged converter or upgrading to a CARB-compliant part, MagnaFlow delivers durability and performance you can trust.

Key Features

This catalytic converter combines advanced engineering with premium materials to deliver dependable performance and legal compliance. Key features include:

• CARB compliant for legal use in California and other CARB-restricted states
• Mandrel-bent tubing preserves OEM-like design and geometry for smooth exhaust flow
• Constructed from highly corrosion-resistant 16 gauge 409 stainless steel tubing for extended service life
• OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel reduce noise and vibration
• Single laser fusion weld on the spun body design minimizes leak potential
• Compact, low-mass design enhances thermal efficiency
• Precision stamped collector optimized for exhaust flow, engine efficiency, and fuel economy
• Includes essential gaskets and hardware for simplified installation
• Tested and validated using state-of-the-art 3D scanning metrology to ensure exact OE fit and function

Construction & Design

MagnaFlow’s catalytic converter is expertly crafted to replicate the original equipment manufacturer’s spun body design, ensuring factory-like flow dynamics and performance. The use of durable 16 gauge 409 stainless steel tubing provides exceptional resistance to corrosion and wear, extending the converter’s lifespan even under harsh conditions.

Mandrel-bent tubing maintains precise geometry for optimal exhaust flow, supporting peak fuel economy and engine operation. The single laser fusion weld enhances structural integrity and reduces the risk of leaks, while the compact design promotes improved thermal efficiency. OE-sized barbed exhaust hangers made from 410 stainless steel help reduce noise and vibration, contributing to a quieter and smoother ride.

Installation & Fitment

This direct-fit catalytic converter is designed exclusively for the 2000 Jeep Grand Cherokee 4.0L inline-six engine, allowing for straightforward installation with no cutting, welding, or modifications required when using proper tools. It directly replaces OE part numbers 5208 0356AC and 5210 1242AC, ensuring compatibility and a perfect fit.

Installation is further simplified by the inclusion of all necessary gaskets and hardware, enabling a quick and efficient replacement process that restores your vehicle’s emissions system to factory standards.

What's Included

• MagnaFlow Direct-Fit Catalytic Converter 447187
• Essential gaskets
• Installation hardware

Ideal For

This catalytic converter is perfect for 2000 Jeep Grand Cherokee owners who need a reliable, CARB-compliant replacement part that maintains factory emissions standards without sacrificing performance or fuel economy. It is especially suited for those seeking a direct-fit solution that simplifies installation and ensures long-term durability.

Emissions Note

This catalytic converter meets or exceeds California Air Resource Board (CARB) requirements and has undergone rigorous testing to comply with CARB guidelines. It is 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, ensuring genuine compliance and peace of mind.

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.