AP Exhaust 644039 Catalytic Converter - Rear

Overview of AP Exhaust Direct Fit Converter 644039

The AP Exhaust Direct Fit Converter 644039 is designed specifically for Mazda 3, Mazda 6, and Mazda CX-5 models. This catalytic converter meets Federal EPA standards and offers a reliable replacement option for your vehicle's exhaust system.

• Federal / EPA direct-fit catalytic converter
• Ceramic substrate material for efficient emission control
• One 2-bolt welded inlet connection
• Slip fit outlet design for secure installation
• Includes one clamp and one inlet gasket
• Equipped with one O2 sensor port

Product Line Details: Direct Fit Converter

The Direct Fit Converter line by AP Exhaust focuses on providing catalytic converters that match OEM specifications for a direct replacement. This ensures compatibility and simplifies installation without the need for modifications. The 644039 part number is part of this line, designed to fit select Mazda models with precise inlet and outlet configurations.

Detailed Product Description

This AP Exhaust catalytic converter features a ceramic substrate that effectively reduces harmful emissions while maintaining exhaust flow. The inlet side uses a 2-bolt welded flange, ensuring a secure and leak-free connection, while the outlet side employs a slip fit design for ease of assembly. The unit includes one O2 sensor port to accommodate your vehicle’s oxygen sensor, maintaining proper engine management and emissions monitoring. The package contains one clamp and one inlet gasket to assist in sealing the connection at the inlet flange.

Compatible Vehicles and Common Applications

• Replacement for Mazda 3 catalytic converter issues
• Addressing emission system faults on Mazda 6
• Resolving exhaust leaks or damage on Mazda CX-5
• Upgrading to a Federal EPA compliant catalytic converter
• Fixing check engine light triggered by catalytic converter failure

Installation Notes and Tips

Installation requires removal of the existing catalytic converter and proper alignment of the 2-bolt welded inlet flange. Use the included clamp and inlet gasket to ensure a tight seal. The slip fit outlet allows for some flexibility during installation but verify all connections are secure to prevent exhaust leaks. The O2 sensor port must be properly connected to maintain engine performance and emissions compliance.

Quality Assurance and Warranty

AP Exhaust catalytic converters are manufactured to meet Federal EPA standards for emissions control. The Direct Fit Converter 644039 is built with durable materials, including a ceramic substrate, to provide consistent performance. Warranty details should be confirmed with the supplier or manufacturer, as they may vary.