
Dorman 673-973 Catalytic Converter with Integrated Exhaust Manifold - Rear
OE-Style Rear Manifold Converter
Dorman 673-973 is a catalytic converter with integrated exhaust manifold for specific BMW applications. It is built as a direct-fit, standard replacement in stainless steel with a ceramic substrate and CARB certification for the listed vehicles.
Key Features
- Part number 673-973
- Integrated exhaust manifold and catalytic converter design
- Specific fit for listed BMW rear applications
- Stainless steel construction with uncoated metallic gray finish
- Ceramic substrate material
- Flanged inlet and flanged outlet
- CARB certified for the listed fitments
- OE-style replacement for BMW 325Ci, 325i, 325xi, 330i, 330Ci, and Z3 rear positions
Detailed Description
This Dorman manifold converter is engineered to match original equipment dimensions and mounting points on select BMW 3 Series and Z3 models. The one-piece, specific-fit design uses a flanged inlet and outlet, stainless steel body construction, and a ceramic catalyst substrate to restore exhaust flow and emissions control performance on the rear position. Part number 673-973 is a direct replacement for vehicles that require a CARB-compliant rear catalytic converter assembly.
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
What It Helps Fix
- Failed catalytic converter emissions readings
- Exhaust leaks at the manifold converter assembly
- Check engine light conditions related to catalyst efficiency
- Damaged or corroded OE exhaust manifold converter housing
- Restricted exhaust flow from a worn converter core
Installation Notes and Tips
Fits 2001-2005 BMW 325Ci, rear. Fits 2001-2005 BMW 325i, rear. Fits 2001-2005 BMW 325xi, rear. Fits 2001-2005 BMW 330i, rear. Fits 2001-2003 BMW 330Ci, rear. Fits 2001-2002 BMW Z3, rear. Verify flange alignment, gasket condition, and sensor routing before installation. This assembly uses a specific-fit, one-piece layout, so matching the vehicle’s original exhaust configuration is important for proper sealing and fit.
Quality Assurance
Dorman manufactures this catalytic converter with integrated exhaust manifold as an OE-style replacement for the listed BMW applications. The CARB-certified design and vehicle-specific engineering support emissions compliance and fitment accuracy for the covered models.
Dorman 673-973 Catalytic Converter with Integrated Exhaust Manifold - Rear
OE-Style Rear Manifold Converter
Dorman 673-973 is a catalytic converter with integrated exhaust manifold for specific BMW applications. It is built as a direct-fit, standard replacement in stainless steel with a ceramic substrate and CARB certification for the listed vehicles.
Key Features
- Part number 673-973
- Integrated exhaust manifold and catalytic converter design
- Specific fit for listed BMW rear applications
- Stainless steel construction with uncoated metallic gray finish
- Ceramic substrate material
- Flanged inlet and flanged outlet
- CARB certified for the listed fitments
- OE-style replacement for BMW 325Ci, 325i, 325xi, 330i, 330Ci, and Z3 rear positions
Detailed Description
This Dorman manifold converter is engineered to match original equipment dimensions and mounting points on select BMW 3 Series and Z3 models. The one-piece, specific-fit design uses a flanged inlet and outlet, stainless steel body construction, and a ceramic catalyst substrate to restore exhaust flow and emissions control performance on the rear position. Part number 673-973 is a direct replacement for vehicles that require a CARB-compliant rear catalytic converter assembly.
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
What It Helps Fix
- Failed catalytic converter emissions readings
- Exhaust leaks at the manifold converter assembly
- Check engine light conditions related to catalyst efficiency
- Damaged or corroded OE exhaust manifold converter housing
- Restricted exhaust flow from a worn converter core
Installation Notes and Tips
Fits 2001-2005 BMW 325Ci, rear. Fits 2001-2005 BMW 325i, rear. Fits 2001-2005 BMW 325xi, rear. Fits 2001-2005 BMW 330i, rear. Fits 2001-2003 BMW 330Ci, rear. Fits 2001-2002 BMW Z3, rear. Verify flange alignment, gasket condition, and sensor routing before installation. This assembly uses a specific-fit, one-piece layout, so matching the vehicle’s original exhaust configuration is important for proper sealing and fit.
Quality Assurance
Dorman manufactures this catalytic converter with integrated exhaust manifold as an OE-style replacement for the listed BMW applications. The CARB-certified design and vehicle-specific engineering support emissions compliance and fitment accuracy for the covered models.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
OE-Style Rear Manifold Converter
Dorman 673-973 is a catalytic converter with integrated exhaust manifold for specific BMW applications. It is built as a direct-fit, standard replacement in stainless steel with a ceramic substrate and CARB certification for the listed vehicles.
Key Features
- Part number 673-973
- Integrated exhaust manifold and catalytic converter design
- Specific fit for listed BMW rear applications
- Stainless steel construction with uncoated metallic gray finish
- Ceramic substrate material
- Flanged inlet and flanged outlet
- CARB certified for the listed fitments
- OE-style replacement for BMW 325Ci, 325i, 325xi, 330i, 330Ci, and Z3 rear positions
Detailed Description
This Dorman manifold converter is engineered to match original equipment dimensions and mounting points on select BMW 3 Series and Z3 models. The one-piece, specific-fit design uses a flanged inlet and outlet, stainless steel body construction, and a ceramic catalyst substrate to restore exhaust flow and emissions control performance on the rear position. Part number 673-973 is a direct replacement for vehicles that require a CARB-compliant rear catalytic converter assembly.
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
What It Helps Fix
- Failed catalytic converter emissions readings
- Exhaust leaks at the manifold converter assembly
- Check engine light conditions related to catalyst efficiency
- Damaged or corroded OE exhaust manifold converter housing
- Restricted exhaust flow from a worn converter core
Installation Notes and Tips
Fits 2001-2005 BMW 325Ci, rear. Fits 2001-2005 BMW 325i, rear. Fits 2001-2005 BMW 325xi, rear. Fits 2001-2005 BMW 330i, rear. Fits 2001-2003 BMW 330Ci, rear. Fits 2001-2002 BMW Z3, rear. Verify flange alignment, gasket condition, and sensor routing before installation. This assembly uses a specific-fit, one-piece layout, so matching the vehicle’s original exhaust configuration is important for proper sealing and fit.
Quality Assurance
Dorman manufactures this catalytic converter with integrated exhaust manifold as an OE-style replacement for the listed BMW applications. The CARB-certified design and vehicle-specific engineering support emissions compliance and fitment accuracy for the covered models.












