Dorman 674-128 Catalytic Converter with Integrated Exhaust Manifold

Dorman 674-128 Catalytic Converter Manifold

Dorman 674-128 is a catalytic converter with integrated exhaust manifold for specific Hyundai and Kia applications. It is precision-engineered to match original equipment fit and function on supported vehicles, with a stainless steel converter body and included inlet gasket, gaskets, and hardware for the listed applications.

Key Features

• Catalytic converter with integrated exhaust manifold for OE-style replacement
• Stainless steel converter body for exhaust system durability
• Round inlet port shape
• Natural finish
• Outlet mounting hole quantity: 2
• Outlet mounting hardware included
• Inlet gasket included
• Package contents: exhaust manifold, gaskets, and hardware
• Not CARB certified

Vehicle Fitment

• Fits 2011-2016 Kia Optima, N/A
• Fits 2011-2015 Hyundai Sonata, N/A
• Fits 2010-2013 Kia Forte, N/A
• Fits 2010-2013 Kia Forte Koup, N/A
• Fits 2012-2013 Kia Forte5, N/A
• Fits 2009-2010 Kia Magentis, N/A (To 11/02/09)
• Fits 2009-2010 Kia Optima, N/A
• Fits 2009-2010 Kia Rondo, N/A
• Fits 2009 Hyundai Sonata, N/A

This part cross-references OE numbers 51125 and 285102G110 for the same application.

What It Helps Address

• Cracked or leaking exhaust manifold assembly
• Restricted catalytic converter flow
• Exhaust odor or emissions-related fault conditions
• Broken flange or mounting-point issues at the outlet
• Fitment problems from a worn or damaged manifold converter

Installation Notes

Verify the vehicle year, make, model, and emissions requirements before ordering. This manifold converter is not CARB certified, so it is not intended for California-compliant applications. Use the included gaskets and hardware during installation, and confirm flange alignment and sensor connections against the original assembly.

Quality Assurance

Dorman designs this manifold converter as a direct-fit replacement for specific OE applications, with materials and dimensions matched to the original equipment layout. Part number 674-128 is built for the listed Hyundai Sonata, Kia Optima, and related Kia applications.