
Dorman 674-688 Catalytic Converter with Integrated Exhaust Manifold
Dorman 674-688 Catalytic Converter Manifold
Dorman 674-688 is a catalytic converter with integrated exhaust manifold built for specific Mazda 6 applications. This manifold converter is engineered as a standard replacement for direct-fit service on the listed vehicles, with stainless steel construction and a ceramic substrate for exhaust aftertreatment performance.
Key Features
- Direct-fit, specific application replacement for select Mazda 6 models
- Integrated exhaust manifold and catalytic converter design
- Stainless steel construction with an uncoated metallic gray finish
- Ceramic substrate material
- Flanged inlet and outlet connections
- Round body design with flanged exhaust routing
- OE-style replacement part number 674-688
Product Details
This Dorman manifold converter is built to match original equipment dimensions and connection points for the 2014-2015 Mazda 6 and 2017 Mazda 6. The one-piece design combines the exhaust manifold and catalytic converter into a single assembly, helping maintain proper exhaust flow and emissions system function on the specified Mazda 6 fitments. Part number 674-688 is a direct replacement choice for drivers servicing a worn or damaged manifold converter on these vehicles.
This part cross-references Eastern Catalytic 41310 for the same application.
Common Issues It Can Help Address
- Cracked or leaking exhaust manifold assembly
- Failed catalytic converter efficiency on the listed Mazda 6 applications
- Exhaust odor or emissions-related fault conditions
- Broken flange connection points at the manifold or outlet
- Restricted exhaust flow caused by internal converter damage
Installation Notes and Tips
Compatible With 2014-2015 Mazda 6 and 2017 Mazda 6, N/A. Verify flange alignment, gasket sealing surfaces, and exhaust routing before installation. Because this is a specific-fit replacement, confirm the vehicle year and emissions configuration against the original part before ordering. Part number 674-688 uses flanged inlet and outlet connections and does not include clamps or hangers.
Quality Assurance
Dorman designs this manifold converter to match original equipment fit and function on the listed applications. The stainless steel body and ceramic substrate support durable service in exhaust system repair work.
Original: $1,094.03
-65%$1,094.03
$382.91Dorman 674-688 Catalytic Converter with Integrated Exhaust Manifold
Dorman 674-688 Catalytic Converter Manifold
Dorman 674-688 is a catalytic converter with integrated exhaust manifold built for specific Mazda 6 applications. This manifold converter is engineered as a standard replacement for direct-fit service on the listed vehicles, with stainless steel construction and a ceramic substrate for exhaust aftertreatment performance.
Key Features
- Direct-fit, specific application replacement for select Mazda 6 models
- Integrated exhaust manifold and catalytic converter design
- Stainless steel construction with an uncoated metallic gray finish
- Ceramic substrate material
- Flanged inlet and outlet connections
- Round body design with flanged exhaust routing
- OE-style replacement part number 674-688
Product Details
This Dorman manifold converter is built to match original equipment dimensions and connection points for the 2014-2015 Mazda 6 and 2017 Mazda 6. The one-piece design combines the exhaust manifold and catalytic converter into a single assembly, helping maintain proper exhaust flow and emissions system function on the specified Mazda 6 fitments. Part number 674-688 is a direct replacement choice for drivers servicing a worn or damaged manifold converter on these vehicles.
This part cross-references Eastern Catalytic 41310 for the same application.
Common Issues It Can Help Address
- Cracked or leaking exhaust manifold assembly
- Failed catalytic converter efficiency on the listed Mazda 6 applications
- Exhaust odor or emissions-related fault conditions
- Broken flange connection points at the manifold or outlet
- Restricted exhaust flow caused by internal converter damage
Installation Notes and Tips
Compatible With 2014-2015 Mazda 6 and 2017 Mazda 6, N/A. Verify flange alignment, gasket sealing surfaces, and exhaust routing before installation. Because this is a specific-fit replacement, confirm the vehicle year and emissions configuration against the original part before ordering. Part number 674-688 uses flanged inlet and outlet connections and does not include clamps or hangers.
Quality Assurance
Dorman designs this manifold converter to match original equipment fit and function on the listed applications. The stainless steel body and ceramic substrate support durable service in exhaust system repair work.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Dorman 674-688 Catalytic Converter Manifold
Dorman 674-688 is a catalytic converter with integrated exhaust manifold built for specific Mazda 6 applications. This manifold converter is engineered as a standard replacement for direct-fit service on the listed vehicles, with stainless steel construction and a ceramic substrate for exhaust aftertreatment performance.
Key Features
- Direct-fit, specific application replacement for select Mazda 6 models
- Integrated exhaust manifold and catalytic converter design
- Stainless steel construction with an uncoated metallic gray finish
- Ceramic substrate material
- Flanged inlet and outlet connections
- Round body design with flanged exhaust routing
- OE-style replacement part number 674-688
Product Details
This Dorman manifold converter is built to match original equipment dimensions and connection points for the 2014-2015 Mazda 6 and 2017 Mazda 6. The one-piece design combines the exhaust manifold and catalytic converter into a single assembly, helping maintain proper exhaust flow and emissions system function on the specified Mazda 6 fitments. Part number 674-688 is a direct replacement choice for drivers servicing a worn or damaged manifold converter on these vehicles.
This part cross-references Eastern Catalytic 41310 for the same application.
Common Issues It Can Help Address
- Cracked or leaking exhaust manifold assembly
- Failed catalytic converter efficiency on the listed Mazda 6 applications
- Exhaust odor or emissions-related fault conditions
- Broken flange connection points at the manifold or outlet
- Restricted exhaust flow caused by internal converter damage
Installation Notes and Tips
Compatible With 2014-2015 Mazda 6 and 2017 Mazda 6, N/A. Verify flange alignment, gasket sealing surfaces, and exhaust routing before installation. Because this is a specific-fit replacement, confirm the vehicle year and emissions configuration against the original part before ordering. Part number 674-688 uses flanged inlet and outlet connections and does not include clamps or hangers.
Quality Assurance
Dorman designs this manifold converter to match original equipment fit and function on the listed applications. The stainless steel body and ceramic substrate support durable service in exhaust system repair work.












