AP Exhaust 644172 Catalytic Converter - Front

Overview of AP Exhaust Direct Fit Converter 644172

The AP Exhaust Direct Fit Converter 644172 is designed specifically for Ford Focus models, providing a reliable replacement catalytic converter that meets federal EPA standards. Engineered with durable stainless steel and a ceramic substrate, this converter ensures efficient emission control and long-lasting performance.

• Federal / EPA direct-fit catalytic converter
• Constructed with stainless steel body material
• Ceramic substrate for effective emission filtration
• Includes 2 O2 sensor ports for accurate monitoring
• Welded flange inlet and outlet connections
• Overall length of 26 inches for precise fitment
• Compatible with Ford Focus vehicles
• Part number 644172 for easy identification
• Comes boxed in corrugated cardboard for protection
• Clamp quantity: 3, outlet hardware included

Direct Fit Converter Product Line Details

The Direct Fit Converter line by AP Exhaust focuses on providing catalytic converters that match OEM specifications for a direct replacement. This product line emphasizes ease of installation and compatibility, reducing the need for modifications. The 644172 model fits seamlessly into the exhaust system of the Ford Focus, maintaining factory performance and emission standards.

Product Features and Specifications

This catalytic converter features a stainless steel body that resists corrosion and withstands high temperatures. The ceramic substrate inside effectively reduces harmful emissions by converting exhaust gases into less harmful substances. The unit includes two O2 sensor ports, allowing for proper sensor placement and accurate engine management. Both the inlet and outlet connections use welded flanges, with the outlet featuring a 2-bolt welded design, ensuring a secure and leak-free fit. The overall length of 26 inches is designed to match the Ford Focus exhaust layout precisely.

Common Applications and Problem Solving

• Replacement for damaged or clogged catalytic converters on Ford Focus
• Restores proper emission control to pass federal EPA inspections
• Eliminates exhaust leaks caused by worn or cracked converters
• Improves engine performance by ensuring correct exhaust flow
• Addresses check engine light issues related to catalytic converter failure

Installation Notes and Tips

Installation of the AP Exhaust Direct Fit Converter 644172 requires welding due to the welded flange inlet and outlet connections. Ensure the vehicle is securely lifted and cooled before beginning work. The converter includes three clamps and outlet hardware, but no inlet hardware or gaskets are provided, so additional parts may be necessary depending on your vehicle’s setup. Proper alignment of the O2 sensor ports is critical for accurate sensor readings and engine performance.

Quality Assurance and Warranty

AP Exhaust manufactures this catalytic converter to meet federal EPA standards, ensuring compliance with emission regulations for Ford Focus vehicles. The stainless steel construction and ceramic substrate contribute to durability and reliable operation. While specific warranty details are not provided, AP Exhaust products typically come with manufacturer-backed quality assurance to support long-term use.