Dorman 673-439 Catalytic Converter with Integrated Exhaust Manifold

Overview of Dorman Catalytic Converter with Integrated Exhaust Manifold

The Dorman 673-439 catalytic converter with integrated exhaust manifold is designed specifically for Honda Civic and Civic del Sol models. This natural-colored, cast iron converter meets California Air Resources Board (CARB) standards, ensuring compliance and reliable emissions control.

• CARB certified with Executive Order Number D-665-8
• Constructed from durable cast iron converter body
• Includes inlet gasket and flange gasket for proper sealing
• Features a square inlet port shape for precise fitment
• Equipped with 8 outlet mounting holes and mounting hardware

Product Details and Specifications

The Dorman 673-439 catalytic converter combines the exhaust manifold and catalytic converter into a single unit, simplifying installation and reducing potential leak points. Its cast iron construction provides strength and heat resistance, suitable for the operating conditions of Honda Civic and Civic del Sol vehicles. The natural finish maintains corrosion resistance without compromising performance. The included inlet gasket and flange gasket ensure a secure seal between the manifold and engine components. The square inlet port shape is engineered for exact fitment, while the 8 outlet mounting holes accommodate proper attachment to the exhaust system.

Compatible Vehicles and Applications

This catalytic converter with integrated exhaust manifold is compatible with the following Honda models:

• Honda Civic
• Honda Civic del Sol

It is designed to replace factory components that may have failed due to age, corrosion, or damage, restoring proper exhaust flow and emissions control.

Common Issues Addressed by This Part

• Excessive exhaust emissions causing failed emissions tests
• Cracked or leaking exhaust manifold leading to exhaust leaks
• Reduced engine performance due to clogged or damaged catalytic converter
• Check engine light triggered by faulty catalytic converter or manifold
• Rattling noises from broken internal converter components

Installation Notes and Tips

When installing the Dorman 673-439 catalytic converter with integrated exhaust manifold, ensure all gaskets are properly seated to prevent exhaust leaks. The included inlet and flange gaskets should be replaced during installation. Verify the square inlet port aligns correctly with the engine exhaust ports. Torque mounting bolts to manufacturer specifications to avoid warping or damage. This part is designed for direct bolt-on replacement for compatible Honda Civic and Civic del Sol models.

Quality Assurance and Certification

This Dorman catalytic converter is CARB certified under Executive Order Number D-665-8, meeting strict emissions standards for California and other states that require CARB compliance. The cast iron construction offers durability and resistance to thermal stress. While specific warranty details are not provided, Dorman products typically undergo rigorous quality control to ensure reliable performance and fitment.