1. Catalytic Converter Cost: The cost of the catalytic converter itself can vary depending on the brand, material, and whether it's a direct-fit or universal fit. A direct-fit catalytic converter is designed specifically for your vehicle model and usually requires minimal modifications during installation. A universal fit catalytic converter, on the other hand, is more adaptable and can fit various vehicle models but may require additional welding or modifications during installation. Here are approximate prices for catalytic converters for a 2002 Nissan Altima 4-cylinder:
- Direct-fit catalytic converter: $100 - $250
- Universal-fit catalytic converter: $50 - $150
2. Labor Cost: The labor involved in replacing a catalytic converter can vary depending on the mechanic's hourly rate and the complexity of the installation process. On average, labor costs can range from $100 to $300. However, if welding or extensive modifications are required for a universal-fit catalytic converter, the labor cost may be higher.
3. Additional Costs:
- Oxygen sensors: Catalytic converter replacement may require replacing the oxygen sensors, which are located near the catalytic converter. Oxygen sensors monitor the exhaust gas and provide feedback to the engine control unit (ECU) to adjust the air-fuel mixture. Depending on the condition and age of your oxygen sensors, they may need to be replaced at the same time as the catalytic converter. Oxygen sensors can cost between $20 to $100 each.
- Gaskets and hardware: Additional costs for gaskets, bolts, nuts, and other hardware required for the installation may be necessary. These usually cost around $10 to $40.
Therefore, the total cost to replace the catalytic converter on a 2002 Nissan Altima 4-cylinder engine, including the part, labor, and additional costs, can range between $250 to $650. It's always recommended to get quotes from reputable auto repair shops or mechanics before proceeding with the replacement.
