The Dorman 674-301 Catalytic Converter with Integrated Exhaust Manifold is a catalytic converter that includes the exhaust manifold in a single, integrated unit. Identified by part number 674-301 and manufactured by Dorman, this assembly serves as the emissions-control component in the vehicle’s exhaust system. By combining these two functions into one part, it provides a compact replacement option for the exhaust path that requires an integrated manifold design.
