Dorman 679-504 Catalytic Converter - Front

Overview of Dorman 679-504 Catalytic Converter for Infiniti and Nissan

The Dorman 679-504 catalytic converter is designed specifically for select Infiniti and Nissan models, including the Infiniti I30 and Nissan Maxima. Engineered with a stainless steel body and ceramic substrate, this catalytic converter helps reduce harmful emissions while maintaining exhaust flow efficiency.

• Specific fit for Infiniti I30 and Nissan Maxima models
• Stainless steel cylindrical body with a 4-inch length and 4-inch width
• Flanged inlet and outlet with 3.24-inch inlet inside diameter and 4.5-inch outlet outside diameter
• Includes heat shield and gaskets for both inlet and outlet
• Equipped with one sensor port for oxygen sensor compatibility
• Mounting hardware included for outlet side installation

Detailed Product Features and Specifications

This Dorman catalytic converter features a cylinder-shaped stainless steel body measuring 4 inches in length and width, providing durability and resistance to corrosion. The inlet and outlet are both flanged, with the inlet inside diameter at 3.24 inches and the outlet outside diameter at 4.5 inches, ensuring a precise fit for the exhaust system of the Infiniti I30 and Nissan Maxima. The converter includes a ceramic substrate designed to effectively reduce exhaust emissions. A heat shield is attached to protect surrounding components from excessive heat. Additionally, the unit has one sensor port to accommodate the vehicle’s oxygen sensor, maintaining proper engine management and emissions control.

Compatible Vehicles and Common Applications

• Replacement for catalytic converter issues in Infiniti I30 models
• Suitable for Nissan Maxima exhaust system repairs
• Addresses exhaust leaks and emission failures
• Helps restore proper catalytic function for emission compliance
• Used when original catalytic converter is damaged or clogged

Installation Notes and Tips

When installing the Dorman 679-504 catalytic converter, ensure the flanged inlet and outlet align correctly with the vehicle’s exhaust manifold and downstream piping. The included gaskets for both inlet and outlet should be used to prevent exhaust leaks. Note that inlet mounting hardware is not included, so verify if existing hardware is reusable or needs replacement. The attached heat shield should be positioned to avoid contact with heat-sensitive components. Proper torque specifications should be followed to secure mounting bolts and sensor connections.

Quality Assurance and Warranty Information

Dorman manufactures this catalytic converter with high-grade stainless steel and a ceramic substrate to meet regular grade standards. While this part is not California Air Resources Board (CARB) certified, it is engineered to meet OEM fitment and function requirements for the Infiniti I30 and Nissan Maxima. The product includes a limited warranty against defects in materials and workmanship, providing confidence in its durability and performance.