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AP Exhaust 642038 Catalytic Converter - Rear
AP Exhaust Catalytic Converter for Mazda 3 and 3 Sport
The AP Exhaust catalytic converter part number 642038 is designed specifically for Mazda 3 and Mazda 3 Sport models. Crafted with durable stainless steel and a ceramic substrate, this federal EPA direct-fit converter ensures compliance with emissions standards while maintaining reliable performance.
- Constructed from corrosion-resistant stainless steel body material
- Includes inlet gasket for secure sealing
- Features a 2 bolt welded flange inlet type for precise fitment
- Outlet type is a 2.13 inch outside diameter pipe with included outlet hardware
- Overall length of 16 inches for direct replacement
- Ceramic substrate designed for effective catalytic conversion
- Federal EPA direct-fit type for legal compliance
Durable Construction and Precise Fitment
This AP Exhaust catalytic converter (part number 642038) is engineered to meet federal EPA standards, making it a suitable replacement for Mazda 3 and Mazda 3 Sport vehicles requiring a direct-fit catalytic converter. The stainless steel body offers resistance to rust and corrosion, extending the service life of the component. The ceramic substrate inside efficiently reduces harmful emissions by converting exhaust gases. The inlet features a 2 bolt welded flange design, ensuring a secure and leak-free connection, while the outlet pipe measures 2.13 inches in outside diameter and comes with the necessary outlet hardware for installation.
Common Applications and Problem Resolution
- Replacement for clogged or damaged catalytic converters on Mazda 3 and 3 Sport
- Restores proper exhaust flow and reduces emissions to meet federal regulations
- Eliminates check engine light issues related to catalytic converter failure
- Improves engine performance affected by exhaust restrictions
- Addresses failed emissions tests due to converter inefficiency
Installation Notes and Tips
This catalytic converter is designed as a direct-fit replacement for compatible Mazda 3 and 3 Sport models. It includes an inlet gasket and outlet hardware to facilitate installation. No inlet hardware is included, so ensure existing mounting bolts are in good condition or replaced as needed. Proper alignment of the 2 bolt welded flange inlet and 2.13 inch outlet pipe is essential for a secure fit and leak-free operation.
Quality Assurance and Warranty
AP Exhaust catalytic converters are manufactured to meet federal EPA standards for emissions control. The stainless steel construction and ceramic substrate provide durability and reliable performance. While specific warranty details are not provided, AP Exhaust products typically adhere to industry quality standards to ensure long-term functionality.
| Brand | AP Exhaust |
| Part Number | 642038 |
| Body Material | Stainless steel |
| Inlet Gasket | Yes |
| Inlet Hardware | None |
| Inlet Type A | 2 bolt welded flange |
| O2 Sensor Ports | None |
| Outlet Gasket | Not required |
| Outlet Hardware | Yes |
| Outlet Type A | 2.13" od pipe |
| Overall Length (IN) | 16 |
| Substrate Material | Ceramic |
| Type | Federal / epa direct-fit |
This part fits 16 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2013 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; (Use with Aftermarket Pipe 58553); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; For use with Aftermarket Pipe 58553; 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 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; (Use with Aftermarket Pipe 58553); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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 | Mazda | 3 | 2.5L | L4 | Rear | Direct Fit; (Use with Aftermarket Pipe 58553); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; For use with Aftermarket Pipe 58553; 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 | Mazda | 3 | 2.5L | L4 | Rear | Direct Fit; Use with Aftermarket Pipe 58553; 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 | Mazda | 3 Sport | 2.5L | L4 | N/A | Direct Fit; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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 | Mazda | 3 Sport | 2.5L | L4 | Rear | Direct Fit; For use with Aftermarket Pipe 58553; 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. |
| 2011 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; (Use with Aftermarket Pipe 58553); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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. |
| 2011 | Mazda | 3 | 2.5L | L4 | Rear | Direct Fit; (Use with Aftermarket Pipe 58553); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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. |
| 2011 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; For use with Aftermarket Pipe 58553; 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. |
| 2011 | Mazda | 3 | 2.5L | L4 | Rear | Direct Fit; Use with Aftermarket Pipe 58553; 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. |
| 2010 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; (Use with Aftermarket Pipe 58553); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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. |
| 2010 | Mazda | 3 | 2.5L | L4 | Rear | Direct Fit; (Use with Aftermarket Pipe 58553); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 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. |
| 2010 | Mazda | 3 | 2.0L | L4 | Rear | Direct Fit; For use with Aftermarket Pipe 58553; 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. |
| 2010 | Mazda | 3 | 2.5L | L4 | Rear | Direct Fit; Use with Aftermarket Pipe 58553; 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.