Dorman 674-605 Catalytic Converter with Integrated Exhaust Manifold - Rear

Dorman 674-605 Catalytic Converter Manifold

Dorman 674-605 is a catalytic converter with integrated exhaust manifold built for direct replacement on select Mazda Millenia applications. It combines the manifold and converter in one OE-style assembly for the rear position on 1995-2002 Mazda Millenia models.

Key Features

• Integrated catalytic converter and exhaust manifold design
• Precision-engineered to match original equipment dimensions and layout
• Cast iron converter body for durable exhaust service
• Round inlet port shape for OE-style connection
• Includes inlet gasket and outlet mounting hardware as listed in the product data
• Natural finish with regular grade construction
• Not CARB certified

Detailed Description

This Dorman catalytic converter manifold, part number 674-605, is made for rear-position replacement on 1995-2002 Mazda Millenia vehicles. It is designed around the original equipment configuration so the exhaust manifold and converter assembly can be serviced as a single unit, helping restore proper exhaust routing and emissions-system function on the specified Mazda Millenia fitment.

The cast iron body supports exhaust durability, while the OE-style inlet port shape and included gasket components help simplify matching the factory connection points. This part cross-references Carlson 16215 for the same application. If you are sourcing a rear catalytic converter with integrated exhaust manifold for a Mazda Millenia, 674-605 provides a direct-fit replacement option for the listed years.

What It Helps Fix

• Cracked or leaking exhaust manifold assembly
• Restricted exhaust flow from a failing converter
• Exhaust odor or emissions-related fault conditions tied to the manifold converter
• Noise from leaks at the manifold-to-head or outlet connection
• Fitment issues caused by a damaged OE integrated manifold/converter unit

Installation Notes and Tips

Compatible With 1995-2002 Mazda Millenia, rear. Verify the rear-position application, inlet port shape, and outlet mounting pattern before installation. Inspect the mating surfaces, replace worn fasteners or seals as needed, and confirm the exhaust system is aligned before final tightening. Because this unit is not CARB certified, confirm local emissions requirements before purchase or installation.

Quality Assurance

Dorman manufactures this part as an OE-style replacement for the specified vehicle application. The product data identifies it as a regular-grade, precision-engineered assembly built to match original equipment fit and function on the listed Mazda Millenia models.