
Dorman 673-972 Catalytic Converter with Integrated Exhaust Manifold - Front
OE-Style Exhaust Manifold Converter
Dorman 673-972 is a catalytic converter with integrated exhaust manifold for specific BMW applications. It is built as a direct-fit, one-piece replacement with stainless steel construction, a ceramic substrate, and flanged inlet and outlet connections for a factory-style repair.
Compatible With 2001-2005 BMW 325Ci, 325i, 325xi, and 330i front applications, plus 2001-2003 BMW 330Ci front and 2001-2002 BMW Z3 front. This Dorman 673-972 manifold converter is CARB certified and matches the original equipment layout for the listed vehicles.
- Stainless steel body with an uncoated metallic gray finish
- Integrated exhaust manifold and catalytic converter design
- Specific fit for listed BMW front applications
- Ceramic substrate for emissions control service
- Flanged inlet and flanged outlet connections
- CARB certified for the listed applications
- OE-style replacement for factory manifold converter layouts
Detailed Product Overview
This catalytic converter with integrated exhaust manifold is engineered for the front exhaust position on select BMW 325Ci, 325i, 325xi, 330i, 330Ci, and Z3 models. The manifold-style design combines the exhaust manifold and converter into one assembly, which helps restore proper exhaust routing and emissions system function on the specified vehicles. Dorman 673-972 is a standard replacement part built to match original equipment dimensions and mounting style for direct service on the listed applications.
This part cross-references 452287 and 5631758 for the same application.
What It Helps Address
- Failed catalytic converter emissions readings
- Cracked or leaking exhaust manifold assemblies
- Exhaust leaks at the front manifold connection
- Check engine light concerns related to catalyst efficiency
- Factory-style replacement needs on BMW front exhaust systems
Installation Notes and Tips
Verify the vehicle year, model, and front-position fitment before installation. Confirm the inlet and outlet flange configuration, inlet gasket condition, and mounting-hole alignment against the original assembly. Because this is a specific-fit manifold converter, compare the existing exhaust layout on the BMW 325Ci, 325i, 325xi, 330i, 330Ci, or Z3 before removal to ensure the replacement matches the OE configuration.
Quality Assurance
Dorman 673-972 is a CARB-certified replacement for the listed applications and is manufactured as a standard replacement part for OE-style fitment and emissions-system service.
Dorman 673-972 Catalytic Converter with Integrated Exhaust Manifold - Front
OE-Style Exhaust Manifold Converter
Dorman 673-972 is a catalytic converter with integrated exhaust manifold for specific BMW applications. It is built as a direct-fit, one-piece replacement with stainless steel construction, a ceramic substrate, and flanged inlet and outlet connections for a factory-style repair.
Compatible With 2001-2005 BMW 325Ci, 325i, 325xi, and 330i front applications, plus 2001-2003 BMW 330Ci front and 2001-2002 BMW Z3 front. This Dorman 673-972 manifold converter is CARB certified and matches the original equipment layout for the listed vehicles.
- Stainless steel body with an uncoated metallic gray finish
- Integrated exhaust manifold and catalytic converter design
- Specific fit for listed BMW front applications
- Ceramic substrate for emissions control service
- Flanged inlet and flanged outlet connections
- CARB certified for the listed applications
- OE-style replacement for factory manifold converter layouts
Detailed Product Overview
This catalytic converter with integrated exhaust manifold is engineered for the front exhaust position on select BMW 325Ci, 325i, 325xi, 330i, 330Ci, and Z3 models. The manifold-style design combines the exhaust manifold and converter into one assembly, which helps restore proper exhaust routing and emissions system function on the specified vehicles. Dorman 673-972 is a standard replacement part built to match original equipment dimensions and mounting style for direct service on the listed applications.
This part cross-references 452287 and 5631758 for the same application.
What It Helps Address
- Failed catalytic converter emissions readings
- Cracked or leaking exhaust manifold assemblies
- Exhaust leaks at the front manifold connection
- Check engine light concerns related to catalyst efficiency
- Factory-style replacement needs on BMW front exhaust systems
Installation Notes and Tips
Verify the vehicle year, model, and front-position fitment before installation. Confirm the inlet and outlet flange configuration, inlet gasket condition, and mounting-hole alignment against the original assembly. Because this is a specific-fit manifold converter, compare the existing exhaust layout on the BMW 325Ci, 325i, 325xi, 330i, 330Ci, or Z3 before removal to ensure the replacement matches the OE configuration.
Quality Assurance
Dorman 673-972 is a CARB-certified replacement for the listed applications and is manufactured as a standard replacement part for OE-style fitment and emissions-system service.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
OE-Style Exhaust Manifold Converter
Dorman 673-972 is a catalytic converter with integrated exhaust manifold for specific BMW applications. It is built as a direct-fit, one-piece replacement with stainless steel construction, a ceramic substrate, and flanged inlet and outlet connections for a factory-style repair.
Compatible With 2001-2005 BMW 325Ci, 325i, 325xi, and 330i front applications, plus 2001-2003 BMW 330Ci front and 2001-2002 BMW Z3 front. This Dorman 673-972 manifold converter is CARB certified and matches the original equipment layout for the listed vehicles.
- Stainless steel body with an uncoated metallic gray finish
- Integrated exhaust manifold and catalytic converter design
- Specific fit for listed BMW front applications
- Ceramic substrate for emissions control service
- Flanged inlet and flanged outlet connections
- CARB certified for the listed applications
- OE-style replacement for factory manifold converter layouts
Detailed Product Overview
This catalytic converter with integrated exhaust manifold is engineered for the front exhaust position on select BMW 325Ci, 325i, 325xi, 330i, 330Ci, and Z3 models. The manifold-style design combines the exhaust manifold and converter into one assembly, which helps restore proper exhaust routing and emissions system function on the specified vehicles. Dorman 673-972 is a standard replacement part built to match original equipment dimensions and mounting style for direct service on the listed applications.
This part cross-references 452287 and 5631758 for the same application.
What It Helps Address
- Failed catalytic converter emissions readings
- Cracked or leaking exhaust manifold assemblies
- Exhaust leaks at the front manifold connection
- Check engine light concerns related to catalyst efficiency
- Factory-style replacement needs on BMW front exhaust systems
Installation Notes and Tips
Verify the vehicle year, model, and front-position fitment before installation. Confirm the inlet and outlet flange configuration, inlet gasket condition, and mounting-hole alignment against the original assembly. Because this is a specific-fit manifold converter, compare the existing exhaust layout on the BMW 325Ci, 325i, 325xi, 330i, 330Ci, or Z3 before removal to ensure the replacement matches the OE configuration.
Quality Assurance
Dorman 673-972 is a CARB-certified replacement for the listed applications and is manufactured as a standard replacement part for OE-style fitment and emissions-system service.












