Eastern Convertors 50551 Catalytic Converter - Rear

Direct-Fit Rear Catalytic Converter

Eastern Convertors 50551 is a direct-fit rear catalytic converter built for specific Chevrolet Impala and Buick LaCrosse applications. It is made to OE dimensions for a precise undercar fit and uses a standard catalyst design for Federal / EPA direct-fit replacement service.

The DIRECT FIT product line focuses on exact fitment and consistent installation dimensions, with manufacturing methods that support repeatable converter construction and efficient substrate loading. For buyers searching for a rear catalytic converter for a 2019-2020 Chevrolet Impala or a 2012-2016 Buick LaCrosse, part number 50551 provides a vehicle-specific replacement option.

Key Features

• Part number 50551
• Federal / EPA direct-fit undercar catalytic converter
• Standard catalyst type
• Rear position application
• 2-bolt welded inlet and outlet connections
• No O2 sensor ports
• Overall length: 55.25 in.
• Built to OE dimensions for fitment consistency

Detailed Product Overview

Eastern Convertors 50551 is engineered as a rear catalytic converter for select Chevrolet Impala and Buick LaCrosse models. The converter uses a standard catalyst layout and a direct-fit undercar configuration, with welded 2-bolt inlet and outlet connections for the listed applications. The design supports a clean replacement path for vehicles that require a rear converter in the exhaust system.

This DIRECT FIT line is manufactured with automated production processes and spinner welding equipment to maintain dimensional accuracy. The converter also uses proprietary NANO substrate chemistry to support efficient catalyst loading while keeping replacement cost controlled. If you need a rear catalytic converter for a Chevrolet Impala or Buick LaCrosse, 50551 is built around the listed OE-style fitment.

This part cross-references Eastern Convertors 50551 for the same application.

Vehicle Fitment

• Fits 2019-2020 Chevrolet Impala, rear; Federal and California Emissions; Direct Fit Converter
• Fits 2014-2018 Chevrolet Impala, rear; PZEV Emissions; Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
• Fits 2012-2016 Buick LaCrosse, rear; PZEV Emissions; Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT

Installation Notes

• Verify the vehicle’s emissions package before ordering, especially on PZEV and California-emissions applications.
• Rear-position undercar installation requires matching the listed 2-bolt welded inlet and outlet connections.
• No O2 sensor ports are provided on this converter.
• Confirm overall length and exhaust routing against the original unit before installation.

Quality Assurance

Eastern Convertors uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to exact OE dimensions. The DIRECT FIT line is produced with manufacturing controls intended to maintain consistent fitment and catalyst efficiency across the listed applications.