Dorman 679-518 Catalytic Converter - Front

Overview of Dorman 679-518 Catalytic Converter for Nissan Vehicles

The Dorman 679-518 catalytic converter is designed specifically for Nissan Altima, Maxima, and Quest models. Engineered with a stainless steel body and ceramic substrate, this catalytic converter helps reduce harmful emissions while maintaining exhaust flow efficiency.

• Compatible with Nissan Altima, Maxima, and Quest
• Stainless steel cylindrical body with a 5.6-inch length and 7.6-inch width
• Flanged inlet and outlet with 3.54-inch inlet inside diameter and 3.68-inch outlet outside diameter
• Includes heat shield for added protection
• Mounting hardware and gaskets included for secure installation
• Regular grade type with ceramic substrate for emission control

Detailed Product Features and Specifications

The Dorman 679-518 catalytic converter features a cylinder-shaped stainless steel body measuring 5.6 inches in length and 7.6 inches in width, designed to fit precisely on Nissan Altima, Maxima, and Quest exhaust systems. The inlet and outlet are both flanged, with the inlet inside diameter at 3.54 inches and the outlet outside diameter at 3.68 inches, ensuring a proper seal and fit. This specific fit catalytic converter includes a heat shield to protect surrounding components from excessive heat. The ceramic substrate inside the converter facilitates effective reduction of exhaust emissions. The part comes with inlet and outlet gaskets as well as mounting hardware to support a secure and reliable installation.

Applications and Common Issues Addressed

• Replacement for damaged or clogged catalytic converters on Nissan Altima, Maxima, and Quest
• Helps resolve check engine light issues related to emission control
• Improves exhaust flow and reduces harmful emissions
• Restores proper exhaust system function after corrosion or physical damage
• Supports compliance with emission standards (note: not CARB certified)

Installation Notes and Tips

Installation of the Dorman 679-518 catalytic converter requires proper alignment of the flanged inlet and outlet ports. Ensure the included gaskets are positioned correctly to prevent exhaust leaks. The heat shield should be securely fastened to protect adjacent components from heat exposure. It is recommended to inspect the exhaust mounting points and hardware for wear before installation. Professional installation is advised to maintain exhaust system integrity and performance.

Quality Assurance and Warranty Information

Dorman manufactures this catalytic converter with durable stainless steel and a ceramic substrate to provide reliable performance. While this part is not California Air Resources Board (CARB) certified, it meets regular grade standards for emission control. Warranty details should be confirmed with the distributor or manufacturer, as coverage may vary.