AP Exhaust 644140 Catalytic Converter - Rear

Overview of AP Exhaust Direct Fit Converter 644140

The AP Exhaust Direct Fit Converter 644140 is designed specifically for Chevrolet City Express and Nissan NV200 models. This catalytic converter offers a precise fit with a 24-inch overall length and features a ceramic substrate to meet Federal EPA standards.

• Compatible with Chevrolet City Express and Nissan NV200
• Federal / EPA direct-fit catalytic converter
• Overall length of 24 inches for exact fitment
• 2 bolt welded flange inlet and outlet connections
• Includes one inlet and one outlet gasket
• Equipped with one O2 sensor port
• Ceramic substrate material for emission control

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 straightforward installation without modifications, maintaining compliance with Federal EPA regulations. The 644140 part number is part of this line, designed to fit specific vehicle models with exact inlet and outlet flange types and sensor port configurations.

Technical Description and Features

This catalytic converter features a ceramic substrate that effectively reduces harmful emissions. The inlet and outlet connections use 2 bolt welded flanges, ensuring a secure and leak-free fit. The unit includes one O2 sensor port to accommodate the vehicle’s oxygen sensor, which is critical for proper engine management and emissions control. Both inlet and outlet gaskets are included to help maintain a tight seal during installation. With an overall length of 24 inches, this converter is engineered to fit the exhaust system layout of the Chevrolet City Express and Nissan NV200 precisely.

Common Applications and Problem Solving

• Replacement for damaged or clogged catalytic converters
• Restores proper emissions control to pass state inspections
• Eliminates exhaust leaks caused by worn flanges or gaskets
• Supports engine performance by maintaining correct O2 sensor readings
• Ensures compliance with Federal EPA emission standards

Installation Notes and Tips

Installation of the AP Exhaust Direct Fit Converter 644140 requires matching the 2 bolt welded flange connections on both inlet and outlet sides. Ensure the included inlet and outlet gaskets are properly seated to prevent exhaust leaks. The single O2 sensor port must align with the vehicle’s oxygen sensor location. It is recommended to inspect the exhaust system for rust or damage before installation to ensure a secure fit.

Quality Assurance and Warranty

AP Exhaust catalytic converters are manufactured to meet Federal EPA standards for emissions control. The Direct Fit Converter line is engineered for durability and precise fitment. Warranty information should be confirmed with the manufacturer or distributor, as it may vary by region and application.