MagnaFlow Catalytic Converter

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

Part #: 5551723

Overview

The MagnaFlow Direct Fit Catalytic Converter is a premium replacement part engineered specifically for 2011–2012 Dodge Durango and Jeep Grand Cherokee models equipped with the 3.6L V6 engine. Designed to meet stringent emissions standards, this catalytic converter ensures your vehicle remains compliant with California Air Resources Board (CARB) regulations while maintaining optimal engine performance. It is an ideal solution for drivers seeking to eliminate check engine light issues related to emissions and pass state inspections without compromising exhaust flow or durability.

With a direct-fit design, this converter replaces the factory unit seamlessly, offering a hassle-free installation experience. MagnaFlow’s commitment to quality and environmental responsibility makes this catalytic converter a trusted choice for both everyday drivers and automotive professionals.

Key Features

Combining advanced engineering and high-quality materials, this catalytic converter delivers reliable emissions control and long-lasting performance. Key features include:

• CARB-compliant design certified for legal use in California and CARB-restricted states
• Direct-fit installation requiring no cutting, welding, or modifications
• Mandrel-bent tubing for smooth, free-flowing exhaust and reduced backpressure
• Durable stainless steel construction with high corrosion resistance
• OE-style spun body design for precise fit and factory-like function
• Single laser fusion welds to minimize leaks and enhance structural integrity
• Compact, lightweight design that improves thermal efficiency and catalyst light-off time
• Developed using advanced 3D scanning technology to ensure exact fitment

Construction & Design

Crafted from premium stainless steel, this MagnaFlow catalytic converter offers excellent resistance to rust and corrosion, ensuring a long service life even under harsh driving conditions. The spun body construction replicates the original equipment manufacturer’s design, guaranteeing a seamless fit and consistent performance. The single laser fusion weld technique reduces potential leak points, enhancing durability and reliability.

Mandrel-bent tubing maintains smooth exhaust flow, preserving engine efficiency and power output. The compact, low-mass design not only simplifies installation but also promotes faster catalyst activation, which improves emissions control during cold starts and contributes to overall environmental compliance.

Installation & Fitment

This catalytic converter is engineered for a direct-fit replacement on 2011–2012 Dodge Durango and Jeep Grand Cherokee 3.6L V6 models. Installation requires no cutting, welding, or additional modifications, making it accessible for experienced DIYers and professional mechanics alike. The precise 3D-scanned fitment ensures perfect alignment with existing exhaust components, maintaining factory specifications and performance standards.

What's Included

• MagnaFlow California Grade Direct-Fit Catalytic Converter (Part #5551723)
• Pre-installed flanges and gaskets as required for direct installation
• Installation instructions (where applicable)

Ideal For

This catalytic converter is perfect for owners of 2011–2012 Dodge Durango and Jeep Grand Cherokee vehicles who need a reliable, CARB-compliant replacement to maintain emissions compliance and avoid check engine light issues. It is also well-suited for mechanics and automotive enthusiasts performing exhaust repairs or upgrades seeking a durable, high-quality component that preserves factory exhaust performance.

Emissions Note

This MagnaFlow catalytic converter is certified to meet or exceed California Air Resources Board (CARB) emissions standards. It has undergone rigorous testing to comply with CARB guidelines, making it legal for use in California and other CARB-restricted states on the specified vehicle models. Installing this converter ensures your vehicle remains environmentally compliant and passes all required emissions inspections.

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.