Dorman 674-621 Catalytic Converter with Integrated Exhaust Manifold - Rear

OE-Style Exhaust Manifold Converter

The Dorman 674-621 is a catalytic converter with integrated exhaust manifold built for specific Mitsubishi Outlander rear applications. It is engineered to match original equipment layout and mounting points for a direct replacement on 2007-2013 Mitsubishi Outlander models.

With a stainless steel converter body, round inlet port shape, and included inlet gasket plus outlet mounting hardware, this manifold converter is built for a straightforward exhaust repair on the Mitsubishi Outlander rear position. Dorman 674-621 is a practical choice when replacing a worn or damaged manifold converter on 2007-2013 Mitsubishi Outlander vehicles.

Key Features

• Catalytic converter with integrated exhaust manifold for OE-style replacement
• Stainless steel converter body for exhaust system durability
• Round inlet port shape for the specified application
• Includes inlet gasket
• Includes outlet mounting hardware
• Natural finish, regular grade type
• Not CARB certified

Detailed Application Information

This Dorman manifold converter is designed for rear-position exhaust service on Mitsubishi Outlander models from 2007-2013. It supports direct-fit replacement needs where the original exhaust manifold and catalytic converter are combined into one assembly. The part number 674-621 is also referenced in cross applications with Bosch 16651 and Wix 51772 for the same vehicle coverage.

Common Repair Uses

• Replacing a cracked or leaking exhaust manifold converter
• Restoring exhaust flow after catalyst failure
• Addressing exhaust noise from manifold or flange leaks
• Repairing a damaged rear exhaust assembly on Mitsubishi Outlander
• Replacing a rusted or corroded OE manifold converter

Installation Notes and Tips

Fits 2007-2010 Mitsubishi Outlander, rear. Fits 2011-2013 Mitsubishi Outlander, rear. Confirm the vehicle’s emissions requirements before ordering, since this part is listed as not CARB certified. Verify flange alignment, gasket surfaces, and mounting points during installation to help ensure a proper seal on the exhaust manifold and converter assembly.

Quality Assurance

Dorman manufactures this part as an OE-style replacement for specific vehicle applications, with construction and fitment engineered around the original exhaust manifold converter layout. Part number 674-621 is built to match the intended Mitsubishi Outlander rear application.