Eastern Convertors 40372 Catalytic Converter - Rear

Direct-Fit Catalytic Converter for Sentra

Eastern Convertors DIRECT FIT catalytic converter Part Number 40372 is built for a precise OE-style undercar fit on the rear position of select Nissan Sentra models. It is engineered for 2000-2002 Nissan Sentra rear applications and uses a Federal / EPA direct-fit configuration with a 2-bolt welded inlet and outlet.

The DIRECT FIT product line focuses on exact OE dimensions and fitment, using advanced manufacturing methods to support consistent assembly and efficient production. This converter also uses ECO II catalyst technology with a proprietary NANO substrate chemistry for efficient loading and lower-cost converter construction.

Key Features

• Fits 2000-2002 Nissan Sentra, rear undercar
• Eastern Convertors DIRECT FIT line for OE-style fitment
• Part Number 40372
• Federal / EPA direct-fit undercar catalytic converter
• ECO II catalyst type
• 2-bolt welded inlet and 2-bolt welded outlet
• 1 O2 sensor port
• Overall length: 13.5 in.
• Inlet gasket and outlet gasket locations specified for the application

Product Details

This catalytic converter is made for the rear exhaust position on the Nissan Sentra and is intended for direct replacement where the original undercar converter matches the listed configuration. Eastern Convertors uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to OE dimensions and fitment standards. Part Number 40372 is a practical choice for drivers and repair shops looking for a direct-fit Nissan Sentra catalytic converter with Federal / EPA compliance for the listed vehicles.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Addresses

• Failed catalytic converter efficiency codes
• Restricted exhaust flow from a worn converter
• Emissions test failure on the listed Sentra applications
• Rattling or damaged converter substrate
• Exhaust leakage at the converter connection points

Installation Notes and Tips

Verify the vehicle is a 2000-2002 Nissan Sentra with the listed rear undercar configuration before installation. This converter uses 2-bolt welded inlet and outlet connections and includes 1 O2 sensor port, so confirm sensor placement and flange alignment against the original exhaust layout. Federal / EPA direct-fit parts are not for sale or use in California, Colorado, Maine, or New York for vehicles with CA emissions.

Quality Assurance

Eastern Convertors builds this DIRECT FIT converter using manufacturing processes aimed at consistent OE dimensions, fitment accuracy, and efficient catalyst loading. The ECO II substrate design and NANO substrate chemistry are used to support converter efficiency within the specified application.