HomeExhaust > Catalytic ConverterAP Exhaust 644131 Catalytic Converter - Rear
Part #: 644131

AP Exhaust 644131 Catalytic Converter - Rear

Direct Fit Converter, Rear
⚙️ 12 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Direct Fit Converter, Rear
🚗Fitment: Nissan, Sentra
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of AP Exhaust Direct Fit Converter 644131

The AP Exhaust Direct Fit Converter 644131 is designed specifically for Nissan Sentra models, providing a precise replacement catalytic converter. Engineered to meet Federal and EPA standards, this direct-fit catalytic converter ensures compatibility and reliable performance for your vehicle.

  • Compatible with Nissan Sentra
  • Federal / EPA direct-fit catalytic converter
  • Ceramic substrate material for efficient emission control
  • Overall length of 29 inches for exact fitment
  • Includes 1 inlet gasket and 1 outlet gasket
  • Equipped with 2 bolt welded inlet and outlet flanges
  • One O2 sensor port for accurate emissions monitoring
  • Inlet and outlet hardware included

Direct Fit Converter Product Line Details

The Direct Fit Converter line by AP Exhaust focuses on providing catalytic converters that match OEM specifications for a seamless replacement experience. This product line emphasizes precise fitment, reducing installation time and ensuring compliance with emissions regulations. The 644131 model is part of this line, designed to fit Nissan Sentra vehicles without requiring modifications.

Product Features and Specifications

This catalytic converter features a ceramic substrate, which is effective in reducing harmful emissions while maintaining durability. The 2 bolt welded inlet and outlet flanges provide a secure connection to the exhaust system. With an overall length of 29 inches, the converter fits directly into the existing exhaust layout of the Nissan Sentra. The inclusion of one O2 sensor port allows for proper sensor installation, maintaining the vehicle’s emission control system functionality.

Common Applications and Problem Resolution

  • Replacement for a damaged or clogged catalytic converter in Nissan Sentra
  • Restores proper exhaust flow and emission control
  • Helps resolve check engine light issues related to catalytic converter failure
  • Ensures compliance with Federal and EPA emission standards
  • Improves vehicle performance affected by exhaust restrictions

Installation Notes and Tips

Installation of the AP Exhaust Direct Fit Converter 644131 requires removal of the existing catalytic converter and replacement using the included inlet and outlet gaskets and hardware. The 2 bolt welded flanges simplify alignment and attachment. Ensure the O2 sensor is properly installed in the provided sensor port to maintain accurate emissions monitoring. No clamps are required for this installation.

Quality Assurance and Warranty

AP Exhaust manufactures the Direct Fit Converter line to meet Federal and EPA standards, ensuring regulatory compliance and durability. The 644131 catalytic converter is built with quality materials, including a ceramic substrate, to provide consistent performance. Warranty details should be confirmed with the manufacturer or distributor at the time of purchase.

BrandAP Exhaust
Part Number644131
PositionDirect Fit Converter, Rear
Clamp QtyNone
Inlet Gasket Qty1
Inlet HardwareYes
Inlet Type A2 bolt welded
O2 Sensor Ports1
Outlet Gasket Qty1
Outlet HardwareYes
Outlet Type A2 bolt welded
Overall Length (IN)29
Substrate MaterialCeramic
TypeFederal / epa direct-fit

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2019NissanSentra1.8LL4RearCalifornia Emissions; Direct Fit Converter
2018NissanSentra1.8LL4RearDirect Fit; California Emissions; 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.
2017NissanSentra1.8LL4N/ADirect Fit; 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.; Calif. Emissions
2017NissanSentra1.8LL4RearDirect Fit; California Emissions; 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.
2016NissanSentra1.8LL4N/ADirect Fit; 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.; Calif. Emissions
2016NissanSentra1.8LL4RearDirect Fit; California Emissions; 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.
2015NissanSentra1.8LL4N/ADirect Fit; 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.; Calif. Emissions
2015NissanSentra1.8LL4RearDirect Fit; California Emissions; 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.
2014NissanSentra1.8LL4N/ADirect Fit; 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.; Calif. Emissions
2014NissanSentra1.8LL4RearDirect Fit; California Emissions; 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.
2013NissanSentra1.8LL4N/ADirect Fit; 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.; Calif. Emissions
2013NissanSentra1.8LL4RearDirect Fit; California Emissions; 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:

200104AF0A

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.