Locate Honda Civic Catalytic Converter With Integrated Exhaust Manifold & Honda Civic Manifold Catalytic Converter Price. Maintaining the catalytic converter with manifold in your Honda Civic is crucial for peak performance and reduced emissions. To extend its lifespan, ensure regular inspections for clogs, and promptly address engine warning lights, as these may signal potential failure. When selecting a replacement, consider direct-fit options for ease of installation, and opt for high-quality materials like stainless steel for durability. Available types include standard, high-flow, and OEM-grade catalytic converters, each offering specific benefits such as improved exhaust flow or compliance with stringent environmental standards. Proper installation is key, so it's recommended to follow the manufacturer's guidelines or seek professional assistance to ensure optimal function and longevity.