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AP ExhaustPart #: 641476
AP Exhaust 641476 Catalytic Converter - Front Left
20 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Cadillac, and Chevrolet, Impala, LaCrosse, and XTS
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Federal Direct-Fit Catalytic Converter
The AP Exhaust 641476 is a federal / EPA direct-fit catalytic converter built for specific front left applications. It is engineered for direct replacement on select Chevrolet Impala, Buick LaCrosse, and Cadillac XTS models with flange and welded flange connections for a factory-style exhaust fit.
AP Exhaust 641476 is boxed for protection during handling and storage, and it is not CARB certified. Review state and local emissions requirements before purchase, especially for vehicles licensed in CA, CO, ME, and NY.
Key Features
- Federal / EPA direct-fit catalytic converter
- Front left position application
- 1 inlet and 1 outlet configuration
- Inlet A connection type: flange
- Outlet A connection type: welded flange
- Boxed in corrugated cardboard packaging
- Interchange reference: 20929216
Vehicle Fitment
- Fits 2014-2018 Chevrolet Impala, front left.
- Fits 2014-2016 Chevrolet Impala, front left, direct fit; (14-17); federal and California emissions; old body style.
- Fits 2012-2014 Buick LaCrosse, front left, direct fit; PZEV emissions; federal and California emissions.
- Fits 2012-2016 Buick LaCrosse, front left, direct fit; PZEV emissions; federal and California emissions.
- Fits 2013-2016 Cadillac XTS, front left, direct fit; radiator side; federal and California emissions.
Common Replacement Reasons
- Failed catalytic converter efficiency codes
- Exhaust odor or elevated emissions readings
- Restricted exhaust flow from a worn converter
- Direct-fit replacement needed for front left exhaust routing
- Emissions system repair on select Impala, LaCrosse, and XTS applications
Installation Notes
Confirm the vehicle’s emissions family, body style, and front left converter location before installation. This part uses a flange inlet and welded flange outlet, so the existing exhaust connection points must match the OE-style layout. Because emissions rules vary by state, verify legality for your specific vehicle before use.
Quality Assurance
AP Exhaust 641476 is a direct-fit replacement designed around the listed vehicle applications and connection types. It is not California Air Resources Board (CARB) certified, so compliance depends on the vehicle and registration state. This part cross-references 20929216 for the same application.
| Brand | AP Exhaust |
|---|---|
| Part Number | 641476 |
| Converter Type | Federal / epa direct-fit |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Boxed | Yes |
| Inlet A Connection Type | Flange |
| Outlet A Connection Type | Welded flange |
| Package Material | Corrugated cardboard |
| Package Type | Box |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Drive Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2017 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2016 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; PZEV Emissions; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2016 | Cadillac | XTS | 3.6L | V6 | Front Left | Direct Fit; Radiator Side; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2016 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; (14-17); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; (Old Body Style) | |
| 2016 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2015 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; PZEV Emissions; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2015 | Cadillac | XTS | 3.6L | V6 | Front Left | Direct Fit; Radiator Side; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2015 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; (14-17); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; (Old Body Style) | |
| 2015 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2014 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; (PZEV Emissions); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2014 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; PZEV Emissions; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2014 | Cadillac | XTS | 3.6L | V6 | Front Left | Direct Fit; Radiator Side; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2014 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; (14-17); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.; (Old Body Style) | |
| 2014 | Chevrolet | Impala | 3.6L | V6 | Front Left | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2013 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; (PZEV Emissions); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2013 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; PZEV Emissions; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2013 | Cadillac | XTS | 3.6L | V6 | Front Left | Direct Fit; Radiator Side; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. | |
| 2012 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; (PZEV Emissions); Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2012 | Buick | LaCrosse | FWD | 3.6L | V6 | Front Left | Direct Fit; PZEV Emissions; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
20929216
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.