MagnaFlow Direct Fit Catalytic Converter

1998–1999 Dodge Durango 5.2L V8

Part #: 4451637

Overview

The MagnaFlow Direct-Fit Catalytic Converter 4451637 is a precision-engineered replacement part designed specifically for the 1998 and 1999 Dodge Durango equipped with the 5.2L V8 engine. This catalytic converter ensures your vehicle remains compliant with emissions regulations while maintaining optimal exhaust flow and engine performance. Perfect for Durango owners seeking a reliable, direct replacement, it fits seamlessly without requiring any modifications, helping to keep your check engine light off and your emissions within legal limits.

Manufactured to meet or exceed California Air Resource Board (CARB) standards, this converter is ideal for drivers in California and other CARB-regulated states who need a dependable, street-legal solution for their exhaust system.

Key Features

MagnaFlow’s catalytic converter combines advanced manufacturing techniques with high-quality materials to deliver durability and performance. Key features include:

• California Grade CARB compliant for legal use in California and CARB-restricted states
• Direct-fit design tailored specifically for 1998–1999 Dodge Durango 5.2L V8 models
• Free-flowing mandrel-bent tubing to optimize exhaust flow and reduce backpressure
• Highly corrosion-resistant stainless steel construction for extended service life
• Spun body design replicates original equipment for a perfect fit
• Single laser fusion weld minimizes the risk of exhaust leaks
• Compact, low-mass design enhances thermal efficiency and catalytic performance
• Interchanges with OEM part numbers 52103382 and 52103382AB
• Manufactured using advanced 3D scanning technology to ensure precise fit and function

Construction & Design

Constructed from premium stainless steel, this catalytic converter is built to resist rust and corrosion, ensuring long-lasting durability even under harsh driving conditions. The spun body design closely mirrors the original equipment manufacturer’s specifications, providing a seamless fit that maintains the integrity of your vehicle’s exhaust system.

Mandrel-bent tubing preserves smooth exhaust flow by reducing turbulence and backpressure, which supports optimal engine efficiency. The single laser fusion weld enhances structural strength and significantly reduces the potential for exhaust leaks, a common issue with lower-quality replacements. This precision engineering results in a compact, thermally efficient converter that maximizes catalytic reactions to effectively reduce harmful emissions.

Installation & Fitment

This direct-fit catalytic converter is designed for straightforward installation on 1998 and 1999 Dodge Durango 5.2L V8 models without the need for cutting, welding, or additional modifications. It installs quickly using standard tools, saving time and labor costs. The exact fitment ensures perfect alignment with your vehicle’s exhaust system, maintaining factory performance and emissions standards.

What's Included

• MagnaFlow California Direct-Fit Catalytic Converter (Part #4451637)
• Pre-installed flanges and gaskets for direct installation (where applicable)
• Installation instructions

Ideal For

This catalytic converter is ideal for 1998 and 1999 Dodge Durango owners who require a reliable, CARB-compliant replacement part. It is perfect for those looking to maintain emissions compliance, restore exhaust system integrity, or replace a failing or damaged catalytic converter without compromising fit or performance.

Emissions Note

This product is certified to meet or exceed California Air Resource Board (CARB) requirements and has undergone rigorous testing to comply with CARB guidelines. It is legal for use in California and other CARB-restricted states on the specified vehicle applications. Installing this converter helps ensure your vehicle passes emissions inspections and operates within environmental regulations.

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.