Dorman 674-030 Catalytic Converter with Integrated Exhaust Manifold - Front

OE-Style Exhaust Manifold Converter

Dorman 674-030 is a catalytic converter with integrated exhaust manifold for specific Subaru BRZ, Toyota 86, and Scion FR-S applications. It is built to match original equipment fit and function on the listed vehicles, with a stainless steel converter body and a flanged outlet for direct replacement service.

For shoppers searching for a Subaru BRZ front catalytic converter, Toyota 86 front manifold converter, or Scion FR-S exhaust manifold converter, this part number 674-030 provides a vehicle-specific solution based on confirmed fitment.

Key Features

• Integrated exhaust manifold and catalytic converter assembly
• Stainless steel converter body for corrosion resistance
• Two inlet ports, one flanged outlet
• Includes inlet gasket and outlet mounting hardware
• Two sensor ports for the original exhaust system layout
• Natural finish with OE-style dimensions and mounting points

Detailed Product Overview

This manifold converter is precision-engineered for direct replacement on select front-position applications. Dorman 674-030 is built around the original equipment configuration, including the inlet and outlet layout, mounting hole pattern, and sensor port count needed for the listed vehicles. It is not CARB certified and is not CARB compliant, so it should be selected only where that specification matches the vehicle and local requirements.

This part cross-references Gates 52467 for the same application. It also interchanges with 44620AC960 and SU00301134.

Common Problems This Part Can Address

• Cracked or leaking exhaust manifold converter housing
• Restricted exhaust flow from a damaged converter assembly
• Exhaust leaks at the manifold or outlet flange
• Check engine light concerns related to converter or sensor-port damage
• Fitment issues after corrosion or impact damage to the original unit

Installation Notes and Tips

Confirm the vehicle’s front exhaust configuration, sensor-port layout, and flange style before installation. Use the included inlet and outlet gaskets during assembly, and verify that the mounting points align with the original exhaust manifold and downstream connection. Because this is a non-CARB-compliant converter, check local emissions requirements before purchase and installation.

Compatible With 2013-2018 Subaru BRZ, front; 2019-2020 Subaru BRZ, N/A; 2017-2019 Toyota 86, front; 2020 Toyota 86, N/A; 2013-2016 Scion FR-S, front.

Quality Assurance

Dorman manufactures this catalytic converter with integrated exhaust manifold as an OE-style replacement for specific vehicle applications. The design focuses on matching original equipment dimensions and connection points for reliable service on the listed Subaru BRZ, Toyota 86, and Scion FR-S models.