Dorman 673-049 Catalytic Converter with Integrated Exhaust Manifold - Rear
OE-Style Rear Manifold Catalytic Converter
Dorman 673-049 is a catalytic converter with integrated exhaust manifold built for specific rear applications on the Chevrolet Impala, Buick LaCrosse, and Cadillac XTS. It is engineered to match original equipment fit and function for a direct replacement on CARB-compliant vehicles.
- Specific fit for 2012-2016 Buick LaCrosse, rear
- Specific fit for 2013-2015 Cadillac XTS, rear
- Specific fit for 2014-2017 Chevrolet Impala, rear
- Stainless steel construction with an uncoated metallic gray finish
- Round, one-piece design with flanged inlet and outlet
- Ceramic substrate material
- CARB certified for approved applications
- Direct replacement for OE part numbers 20926628, 20929196, and 22737796
Built for Direct Replacement Fit
This Dorman manifold converter is precision-engineered to follow the original equipment layout on the rear exhaust position. The stainless steel body, flanged connections, and integrated manifold design support a clean OE-style installation on the Chevrolet Impala, Buick LaCrosse, and Cadillac XTS. Dorman 673-049 is a practical replacement when the original converter/manifold assembly has failed, triggered emissions faults, or no longer seals properly at the exhaust connection.
Common Problems This Part Can Address
- Check engine light related to catalytic converter efficiency
- Exhaust leaks at the manifold or flange connection
- Failed emissions inspection on CARB-regulated applications
- Cracked or deteriorated converter/manifold assembly
- Restricted exhaust flow from a worn catalytic substrate
Installation Notes
Verify rear-position fitment before ordering, since this part is application-specific. The inlet uses a flanged connection and the unit is supplied without clamps, hangers, or inlet mounting hardware. An inlet gasket is included. Confirm the vehicle’s emissions requirements and match the OE reference numbers before installation. Dorman 673-049 is intended for direct replacement use on the listed Buick LaCrosse, Cadillac XTS, and Chevrolet Impala applications.
Quality Assurance
Dorman manufactures this manifold converter as a standard replacement part built to match OE specifications for the listed vehicles. The CARB-certified design supports compliance on approved applications, and the stainless steel construction is selected for exhaust-system durability.
Original: $1,365.38
-65%$1,365.38
$477.88Dorman 673-049 Catalytic Converter with Integrated Exhaust Manifold - Rear
OE-Style Rear Manifold Catalytic Converter
Dorman 673-049 is a catalytic converter with integrated exhaust manifold built for specific rear applications on the Chevrolet Impala, Buick LaCrosse, and Cadillac XTS. It is engineered to match original equipment fit and function for a direct replacement on CARB-compliant vehicles.
- Specific fit for 2012-2016 Buick LaCrosse, rear
- Specific fit for 2013-2015 Cadillac XTS, rear
- Specific fit for 2014-2017 Chevrolet Impala, rear
- Stainless steel construction with an uncoated metallic gray finish
- Round, one-piece design with flanged inlet and outlet
- Ceramic substrate material
- CARB certified for approved applications
- Direct replacement for OE part numbers 20926628, 20929196, and 22737796
Built for Direct Replacement Fit
This Dorman manifold converter is precision-engineered to follow the original equipment layout on the rear exhaust position. The stainless steel body, flanged connections, and integrated manifold design support a clean OE-style installation on the Chevrolet Impala, Buick LaCrosse, and Cadillac XTS. Dorman 673-049 is a practical replacement when the original converter/manifold assembly has failed, triggered emissions faults, or no longer seals properly at the exhaust connection.
Common Problems This Part Can Address
- Check engine light related to catalytic converter efficiency
- Exhaust leaks at the manifold or flange connection
- Failed emissions inspection on CARB-regulated applications
- Cracked or deteriorated converter/manifold assembly
- Restricted exhaust flow from a worn catalytic substrate
Installation Notes
Verify rear-position fitment before ordering, since this part is application-specific. The inlet uses a flanged connection and the unit is supplied without clamps, hangers, or inlet mounting hardware. An inlet gasket is included. Confirm the vehicle’s emissions requirements and match the OE reference numbers before installation. Dorman 673-049 is intended for direct replacement use on the listed Buick LaCrosse, Cadillac XTS, and Chevrolet Impala applications.
Quality Assurance
Dorman manufactures this manifold converter as a standard replacement part built to match OE specifications for the listed vehicles. The CARB-certified design supports compliance on approved applications, and the stainless steel construction is selected for exhaust-system durability.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
OE-Style Rear Manifold Catalytic Converter
Dorman 673-049 is a catalytic converter with integrated exhaust manifold built for specific rear applications on the Chevrolet Impala, Buick LaCrosse, and Cadillac XTS. It is engineered to match original equipment fit and function for a direct replacement on CARB-compliant vehicles.
- Specific fit for 2012-2016 Buick LaCrosse, rear
- Specific fit for 2013-2015 Cadillac XTS, rear
- Specific fit for 2014-2017 Chevrolet Impala, rear
- Stainless steel construction with an uncoated metallic gray finish
- Round, one-piece design with flanged inlet and outlet
- Ceramic substrate material
- CARB certified for approved applications
- Direct replacement for OE part numbers 20926628, 20929196, and 22737796
Built for Direct Replacement Fit
This Dorman manifold converter is precision-engineered to follow the original equipment layout on the rear exhaust position. The stainless steel body, flanged connections, and integrated manifold design support a clean OE-style installation on the Chevrolet Impala, Buick LaCrosse, and Cadillac XTS. Dorman 673-049 is a practical replacement when the original converter/manifold assembly has failed, triggered emissions faults, or no longer seals properly at the exhaust connection.
Common Problems This Part Can Address
- Check engine light related to catalytic converter efficiency
- Exhaust leaks at the manifold or flange connection
- Failed emissions inspection on CARB-regulated applications
- Cracked or deteriorated converter/manifold assembly
- Restricted exhaust flow from a worn catalytic substrate
Installation Notes
Verify rear-position fitment before ordering, since this part is application-specific. The inlet uses a flanged connection and the unit is supplied without clamps, hangers, or inlet mounting hardware. An inlet gasket is included. Confirm the vehicle’s emissions requirements and match the OE reference numbers before installation. Dorman 673-049 is intended for direct replacement use on the listed Buick LaCrosse, Cadillac XTS, and Chevrolet Impala applications.
Quality Assurance
Dorman manufactures this manifold converter as a standard replacement part built to match OE specifications for the listed vehicles. The CARB-certified design supports compliance on approved applications, and the stainless steel construction is selected for exhaust-system durability.
