Explore Honda Civic Exhaust Gas Catalytic Converter & Honda Civic Catalytic Converter. Shop Honda Civic Converter. Buy Honda Civic Catalytic Converter Replacement Cost. Maintaining your Honda Civic's universal catalytic converter can significantly enhance its longevity?regularly inspect for rust or damage, ensure proper engine tuning, and use the correct fuel type to prevent early wear. If you notice a decrease in fuel efficiency, a persistent check engine light, or a rattling noise, it may be time to consider a replacement. When selecting a new converter, choose between ceramic and metallic options, each offering durability and efficient emissions control. Opt for high-quality materials to withstand high temperatures and ease of installation to ensure a seamless upgrade. With the right care and choice, your Civic's emissions system will remain in top condition, keeping your car eco-friendly and in compliance with regulations.