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AP Exhaust 644023 Catalytic ConverterOE Quality 60-Day Returns
Part #: 644023

AP Exhaust 644023 Catalytic Converter

16 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Volkswagen, CC
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AP Exhaust 644023 Catalytic Converter

AP Exhaust 644023 is a Federal / EPA direct-fit catalytic converter built for exact OE dimensions and fitment. It is engineered for Volkswagen CC applications from 2009-2017, including SULEV and Federal/California emissions configurations where listed.

Key Features

  • Stainless steel body for corrosion resistance
  • Ceramic substrate material
  • Federal / EPA direct-fit and direct-fit undercar design
  • 4-bolt welded inlet connection
  • 2.37" OD outlet connection
  • Two O2 sensor ports
  • Inlet gasket included; outlet gasket not required
  • Built to OE dimensions for proper alignment on Volkswagen CC exhaust systems

Detailed Description

This AP Exhaust catalytic converter uses ARISTO substrate chemistry and modern manufacturing methods to support efficient emissions control while maintaining precise fitment. The stainless steel construction, ceramic substrate, and OE-style dimensions make this part a direct replacement for the factory converter on select Volkswagen CC models. If you are replacing a worn or failed converter on a Volkswagen CC, AP Exhaust 644023 provides a direct-fit solution for the 2009-2017 Volkswagen CC platform.

This part cross-references no listed interchange numbers for the same application.

What It Helps Fix

  • Check engine light related to catalyst efficiency
  • Failed emissions inspection caused by a deteriorated converter
  • Exhaust leaks at the converter inlet or outlet connection
  • Restricted exhaust flow from a damaged or clogged catalyst
  • Fitment issues from a converter that does not match OE dimensions

Installation Notes and Tips

  • Fits 2009-2017 Volkswagen CC, N/A, with notes for direct fit and SULEV emissions applications where listed.
  • Fits 2009-2012 Volkswagen CC, N/A, with notes for direct fit and 2-piece aftermarket design references where listed.
  • Fits 2009-2011 Volkswagen CC, N/A, with Federal and California emissions notes where listed.
  • Verify emissions certification requirements before installation, especially for vehicles licensed in CA, CO, ME, and NY.
  • Confirm O2 sensor routing and flange alignment before final tightening.

Quality Assurance

AP Exhaust uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to exact OE dimensions and fitment. The result is a direct-fit catalytic converter designed for consistent installation on the specified Volkswagen CC applications.

BrandAP Exhaust
Part Number644023
Body MaterialStainless steel
Clamp Qty1
Inlet GasketYes
Inlet HardwareNone
Inlet Type A4 bolt welded
O2 Sensor Ports2
Outlet GasketNot required
Outlet HardwareNone
Outlet HardwareYes
Outlet Type A2.37" od
Overall Length (IN)64.5
Substrate MaterialCeramic
TypeFederal / epa direct-fit
TypeFederal / epa direct-fit undercar

This part fits 16 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2017VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2016VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2015VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2014VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2013VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2012VolkswagenCC2.0LL4N/ADirect Fit; (09-12, w/ SULEV); Aftermarket is a 2 Piece Design.; 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.
2012VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2011VolkswagenCC2.0LL4N/ADirect Fit; (09-12, w/ SULEV); Aftermarket is a 2 Piece Design.; 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.
2011VolkswagenCC2.0LL4N/ADirect 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.
2011VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2010VolkswagenCC2.0LL4N/ADirect Fit; (09-12, w/ SULEV); Aftermarket is a 2 Piece Design.; 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.
2010VolkswagenCC2.0LL4N/ADirect 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.
2010VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.
2009VolkswagenCC2.0LL4N/ADirect Fit; (09-12, w/ SULEV); Aftermarket is a 2 Piece Design.; 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.
2009VolkswagenCC2.0LL4N/ADirect 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.
2009VolkswagenCC2.0LL4N/ADirect Fit; SULEV 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.

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