AP Exhaust 644072 Catalytic Converter - Front

AP Exhaust Direct Fit Converter 644072

AP Exhaust Direct Fit Converter 644072 is a Federal / EPA direct-fit catalytic converter built for front-position applications on select Nissan NV200 and Chevrolet City Express models. It uses an OE-dimension layout for straightforward replacement, with welded 2-bolt flange connections and included outlet gasket and hardware for a cleaner install.

The Direct Fit Converter line from AP Exhaust focuses on exact-fit replacement parts for emissions service. This converter is built with AP Emissions Technologies’ ARISTO substrate chemistry and advanced manufacturing methods to support efficient catalyst loading, consistent fitment, and controlled production quality.

Key Features

• Federal / EPA direct-fit catalytic converter for front exhaust placement
• OE-style dimensions for application-specific fitment
• 2-bolt welded flange inlet and outlet design
• Outlet gasket and outlet hardware included
• No O2 sensor ports
• 30-inch overall length
• Part number 644072 for ordering and catalog lookup

Detailed Product Overview

This AP Exhaust catalytic converter is engineered for direct replacement service on 2013-2020 Nissan NV200 front applications and 2015-2018 Chevrolet City Express front applications, with a 2021 Nissan NV200 front listing also shown in the fitment data. It is a Federal / EPA direct-fit undercar converter that follows OE dimensions to help maintain proper exhaust routing and mounting alignment. The 644072 part number is useful when cross-checking catalog listings for Nissan NV200 and Chevrolet City Express exhaust repair.

AP Exhaust uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to consistent dimensional standards. That manufacturing approach supports repeatable fitment for technicians replacing a worn or restricted converter on the NV200 or City Express platform.

What It Helps Address

• Failed or inefficient catalytic converter operation
• Exhaust restriction caused by a deteriorated substrate
• Check engine light concerns related to converter performance
• Exhaust leaks at the flange connection points
• Fitment issues from non-OE-style replacement parts

Installation Notes and Tips

Verify the vehicle’s emissions certification and local regulations before installation. This listing includes Federal and California emissions coverage for the specified applications, but some years are restricted from sale or use in CA, CO, ME, and NY. Confirm front-position placement, flange style, and overall length before removing the original converter. The 2-bolt welded flange design and included outlet gasket and hardware support a direct replacement process, while the absence of O2 sensor ports means sensor location must match the vehicle’s original exhaust configuration.

Fits 2013-2020 Nissan NV200, front; fits 2021 Nissan NV200, front; fits 2015-2018 Chevrolet City Express, front.

Quality Assurance

AP Exhaust builds this converter to OE dimensions using controlled manufacturing processes and proprietary substrate chemistry to support consistent fitment and converter efficiency. Part number 644072 is produced as a Federal / EPA direct-fit replacement for the listed applications.