MagnaFlow Direct Fit Catalytic Converter

Fits Most Dodge/Jeep 5.7L/3.6L (11-12)

Part #: 5551737

Overview

The MagnaFlow Direct-Fit Catalytic Converter (Part #5551737) is a premium replacement designed specifically for 2011–2012 Dodge Durango and Jeep Grand Cherokee models equipped with the 3.6L V6 engine. Engineered to meet or exceed original equipment standards, this catalytic converter ensures your vehicle maintains optimal emissions control and performance. It is an ideal solution for owners needing a reliable, CARB-compliant replacement that fits perfectly without requiring any modifications.

This converter helps keep your vehicle’s check engine light off by restoring proper emissions function, making it a smart choice for drivers in California and other CARB-regulated states. Whether replacing a failed factory converter or upgrading to a high-quality, legal component, MagnaFlow’s direct-fit design offers durability and peace of mind.

Key Features

Built with advanced manufacturing techniques and premium materials, this catalytic converter delivers long-lasting performance and emissions compliance. Key features include:

• CARB-compliant design certified for legal use in California and other CARB-restricted states
• Direct-fit replacement requiring no cutting, welding, or modifications
• Mandrel-bent tubing for smooth, unrestricted exhaust flow and improved efficiency
• Highly corrosion-resistant stainless steel construction for extended durability
• Spun body design replicates original equipment for perfect fit and function
• Single laser fusion weld minimizes leak potential and enhances structural integrity
• Compact, low-mass design promotes faster thermal efficiency and catalyst light-off
• Developed using advanced 3D scanning technology to ensure precise OEM fitment

Construction & Design

MagnaFlow’s catalytic converter is crafted from premium stainless steel, providing excellent resistance to rust and corrosion even under harsh operating conditions. The spun body construction mirrors the original equipment manufacturer’s design, ensuring a seamless fit within the existing exhaust system. Mandrel-bent tubing maintains a smooth exhaust path, reducing backpressure and promoting efficient flow.

The single laser fusion weld used in this converter enhances durability by creating a strong, leak-resistant seal. This meticulous engineering results in a compact and lightweight component that heats up quickly, improving catalytic efficiency and reducing emissions more effectively.

Installation & Fitment

This catalytic converter is designed for direct bolt-on installation on 2011–2012 Dodge Durango and Jeep Grand Cherokee 3.6L V6 models. Its precise fitment eliminates the need for cutting, welding, or additional modifications, making it a straightforward replacement for professional mechanics and experienced DIY enthusiasts alike. Installation can be completed efficiently using standard tools, restoring your vehicle’s emissions system to factory standards.

What's Included

• MagnaFlow California Grade Direct-Fit Catalytic Converter (Part #5551737)
• Installation hardware (if applicable)
• Instructions for proper installation

Ideal For

This catalytic converter is ideal for owners of 2011–2012 Dodge Durango and Jeep Grand Cherokee vehicles who require a reliable, CARB-compliant replacement part. It suits drivers looking to maintain emissions compliance in California and other states with strict environmental regulations, as well as those seeking a durable, OEM-quality converter without the hassle of custom fitting or fabrication.

Emissions Note

This MagnaFlow catalytic converter meets or exceeds California Air Resources Board (CARB) requirements and has undergone additional testing to ensure compliance with CARB guidelines. It is legal for use in California and other CARB-restricted states on the specified 2011–2012 Dodge Durango and Jeep Grand Cherokee models, helping you maintain regulatory compliance and avoid emissions-related penalties.

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.