Magnaflow Direct Fit Catalytic Converter

2004–2006 Jeep Wrangler 4.0L I6

Part #: 4583386

Overview

The Magnaflow Direct Fit Catalytic Converter 4583386 is a precision-engineered replacement part designed specifically for 2004 to 2006 Jeep Wrangler models equipped with the 4.0L inline-six engine. This catalytic converter is an ideal solution for Jeep owners seeking a reliable, emissions-compliant upgrade that maintains factory performance and fuel efficiency. It fits a wide range of trims including the 65th Anniversary Edition, Rubicon, Sahara, SE, Sport, Unlimited, Unlimited Rubicon, and X models.

Manufactured to meet California Air Resources Board (CARB) standards, this converter ensures your vehicle remains emissions-legal in all 50 states, including strict regions such as California, Colorado, New York, and Maine. Its direct-fit design allows for a hassle-free installation without cutting or welding, making it a practical choice for both DIY enthusiasts and professional mechanics.

Key Features

Magnaflow’s Direct Fit Catalytic Converter combines advanced engineering with durable materials to deliver dependable emissions control and long-lasting service. Key features include:

• CARB compliant for legal use nationwide, including California and other CARB states
• Direct-fit design created using state-of-the-art 3D scanning technology to replicate OEM fit and function
• Mandrel-bent tubing to eliminate flow restrictions and preserve factory exhaust dynamics
• Constructed from high-strength 16 gauge 409 stainless steel tubing for superior corrosion resistance
• Durable 308 stainless steel MIG welds for enhanced structural integrity and longevity
• Includes all necessary hardware and gaskets to simplify installation and replace corroded factory components
• Interchanges with OE part numbers 5205 9681AE and 5205 9681AA
• Designed to maintain factory performance and fuel economy by replicating OEM exhaust flow characteristics

Construction & Design

This catalytic converter is expertly crafted from premium 16 gauge 409 stainless steel tubing, offering exceptional resistance to rust and corrosion for extended durability. The mandrel-bent tubing design ensures smooth, unrestricted exhaust flow, preserving engine efficiency and power delivery. Precision 3D scanning technology was employed during development to guarantee an exact OEM fit, allowing seamless integration with your Jeep Wrangler’s existing exhaust system.

Welds are performed using robust 308 stainless steel MIG welding techniques, providing superior strength and reliability under demanding driving conditions. Magnaflow’s commitment to quality is evident in every aspect of this converter’s construction, making it a dependable and long-lasting replacement for your vehicle’s emissions system.

Installation & Fitment

The Magnaflow Direct Fit Catalytic Converter is designed for straightforward installation without the need for cutting, welding, or modifications. This direct-fit solution comes with all necessary hardware and gaskets, eliminating common issues with seized or corroded factory parts and streamlining the replacement process. It fits the following Jeep Wrangler models equipped with the 4.0L I6 engine:

• 2004–2006 Jeep Wrangler Rubicon
• 2004 Jeep Wrangler Sahara
• 2005–2006 Jeep Wrangler SE
• 2004–2006 Jeep Wrangler Sport
• 2004–2006 Jeep Wrangler Unlimited
• 2005–2006 Jeep Wrangler Unlimited Rubicon
• 2004–2006 Jeep Wrangler X
• 2006 Jeep Wrangler 65th Anniversary Edition

What's Included

• Magnaflow Direct Fit Catalytic Converter (Part #4583386)
• Essential gaskets for proper sealing
• Installation hardware to replace factory components

Ideal For

This catalytic converter is perfect for Jeep Wrangler owners who require a precise, emissions-compliant replacement that preserves factory performance and fuel economy. It is especially suited for those residing in CARB-regulated states or anyone looking to maintain their vehicle’s emissions system with a high-quality, direct-fit component that simplifies installation and ensures long-term reliability.

Emissions Note

This Magnaflow catalytic converter is 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. Magnaflow provides genuine compliance assurance, ensuring your vehicle meets or exceeds California Air Resources Board requirements for emissions control.

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.