Dorman 674-303 Catalytic Converter with Integrated Exhaust Manifold

Dorman 674-303 Catalytic Converter Manifold

Dorman 674-303 is a catalytic converter with integrated exhaust manifold for specific Jeep, Ram, Fiat, Chrysler, and Dodge applications. It is built as a direct OE-style replacement for vehicles that use a manifold converter design, with stainless steel construction and a flanged outlet for a precise exhaust connection.

Key Features

• Catalytic converter with integrated exhaust manifold for a manifold converter application
• Stainless steel converter body for corrosion resistance
• Natural finish with regular grade construction
• 1 inlet, 1 outlet, and 2 sensor ports
• Oval inlet port shape with flanged outlet type
• Includes inlet gasket, outlet gasket, studs, bolts, washers, and nuts listed in package contents
• Not CARB certified

Detailed Description

This Dorman exhaust manifold catalytic converter is engineered to match the original equipment layout on select 2013-2022 vehicles. It is a direct replacement for applications such as the Jeep Compass, Jeep Cherokee, Jeep Renegade, Ram ProMaster City, Fiat 500X, Chrysler 200, and Dodge Dart, helping restore proper exhaust routing and emissions system function. Part number 674-303 is also referenced for the same application under Cardone Reman 22-159 and OE cross-reference 68081818AB.

Compatible With 2017-2022 Jeep Compass, 2022 Ram ProMaster City, 2015-2021 Ram ProMaster City, 2018 Fiat 500X, 2015-2018 Jeep Renegade, 2017 Chrysler 200, 2016-2017 Fiat 500X, 2014-2017 Jeep Cherokee, 2015-2016 Chrysler 200, and 2013-2016 Dodge Dart. This part number, 674-303, is a fitment-focused replacement for vehicles that require an integrated manifold converter assembly.

What It Helps Address

• Cracked or leaking exhaust manifold converter assembly
• Restricted exhaust flow from a damaged converter body
• Check engine light concerns related to exhaust or catalyst performance
• Exhaust noise caused by manifold or flange leakage
• Failed emissions inspection due to a worn converter assembly

Installation Notes and Tips

Verify sensor port count, inlet and outlet flange configuration, and vehicle emissions requirements before installation. This unit is not CARB certified, so it is not intended for California-compliant applications. Use the included gaskets and listed mounting hardware during installation, and confirm all flange surfaces are clean and flat before tightening.

Quality Assurance

Dorman manufactures this manifold converter as a precision-engineered OE-style replacement for specific vehicle years, makes, and models. The stainless steel converter body and application-specific design support a reliable repair for the listed fitments.