AP Exhaust 644143 Catalytic Converter - Front Right

AP Exhaust Catalytic Converter for Buick LaCrosse

The AP Exhaust 644143 catalytic converter is designed specifically for Buick LaCrosse models, providing a direct-fit replacement that meets Federal and EPA standards. Constructed with durable stainless steel and a ceramic substrate, this catalytic converter ensures reliable performance and longevity.

Key Features of AP Exhaust 644143 Catalytic Converter

• Body material made from corrosion-resistant stainless steel
• Federal / EPA direct-fit design for precise installation
• Overall length of 10.5 inches for exact fitment
• Inlet with 3 bolt welded flange and one inlet gasket included
• Outlet with 2 bolt welded flange and one outlet gasket included
• Ceramic substrate for effective emission control
• No O2 sensor ports, designed for specific Buick LaCrosse exhaust systems

Detailed Product Description

This AP Exhaust catalytic converter, part number 644143, is engineered to replace the factory catalytic converter on Buick LaCrosse vehicles. The stainless steel body offers resistance to rust and corrosion, extending the life of the component under harsh driving conditions. The ceramic substrate inside efficiently reduces harmful emissions, helping your vehicle comply with Federal and EPA regulations. The inlet and outlet flanges are welded for durability, with the inlet featuring a 3 bolt flange and the outlet a 2 bolt flange, each accompanied by a gasket to ensure a secure seal. With an overall length of 10.5 inches, this converter is designed for a direct-fit installation without modifications.

Common Applications and Issues Addressed

• Replacement for a damaged or clogged catalytic converter on Buick LaCrosse
• Restores proper exhaust flow and emission control
• Helps resolve check engine light issues related to catalytic converter failure
• Improves vehicle compliance with emission testing requirements
• Reduces exhaust odors and harmful emissions

Installation Notes and Tips

Installation of the AP Exhaust 644143 catalytic converter requires basic mechanical skills and appropriate tools. Ensure the vehicle is cooled down before starting work. The direct-fit design allows for bolt-on installation using the included inlet and outlet gaskets. Verify flange alignment and torque specifications according to Buick LaCrosse manufacturer guidelines. Since this converter does not include O2 sensor ports, reuse the existing sensors from the original exhaust system.

Quality Assurance and Warranty

AP Exhaust catalytic converters are manufactured to meet Federal and EPA standards for emissions control. The stainless steel construction and ceramic substrate are tested for durability and performance. While specific warranty details are not provided here, AP Exhaust products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.