HomeExhaust > Catalytic ConverterAP Exhaust 643146 Catalytic Converter - Rear
Part #: 643146

AP Exhaust 643146 Catalytic Converter - Rear

Rear
⚙️ 9 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Subaru, Legacy and Outback
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Overview of AP Exhaust Catalytic Converter 643146

The AP Exhaust catalytic converter 643146 is designed specifically for Subaru Legacy and Outback models. This federal/EPA direct-fit converter ensures compliance with emissions standards while maintaining proper exhaust flow and performance.

  • Federal / EPA direct-fit catalytic converter
  • Compatible with Subaru Legacy and Outback
  • 3 bolt welded flange inlet and 2 bolt welded flange outlet
  • Overall length of 58.5 inches for precise fitment
  • Ceramic substrate material for effective emissions control

Product Features and Specifications

This catalytic converter features a 3 bolt welded flange inlet and a 2 bolt welded flange outlet, designed to match the factory exhaust system connections on compatible Subaru vehicles. The overall length of 58.5 inches allows for a direct replacement without modification. The ceramic substrate inside the converter is engineered to reduce harmful emissions effectively, meeting federal and EPA regulations. This part is a direct-fit solution, ensuring proper installation and function on Subaru Legacy and Outback models.

Compatible Vehicles and Applications

The AP Exhaust catalytic converter part number 643146 is compatible with the following vehicles:

  • Subaru Legacy
  • Subaru Outback

This part is intended for use in restoring or maintaining the emissions control system on these Subaru models, helping to address issues related to catalytic converter failure or emissions compliance.

Common Issues Addressed by This Catalytic Converter

  • Check engine light triggered by catalytic converter malfunction
  • Failed emissions tests due to inefficient catalytic conversion
  • Reduced engine performance caused by clogged or damaged converter
  • Excessive exhaust emissions impacting environmental compliance
  • Unusual exhaust odors or noises related to converter damage

Installation Notes and Tips

Installation of the AP Exhaust catalytic converter 643146 requires matching the 3 bolt welded flange inlet and 2 bolt welded flange outlet to the vehicle’s exhaust system. Ensure all flange surfaces are clean and free of debris before installation. Proper torque specifications should be followed to avoid leaks. This direct-fit part is designed to simplify replacement without the need for additional modifications or adapters.

Quality Assurance and Warranty

AP Exhaust catalytic converters are manufactured to meet federal and EPA standards for emissions control. The ceramic substrate material is selected for durability and effective pollutant reduction. While specific warranty details are not provided here, AP Exhaust products typically come with a limited warranty covering defects in materials and workmanship. Verify warranty terms with the supplier or manufacturer upon purchase.

BrandAP Exhaust
Part Number643146
Clamp QtyNone
Inlet Type A3 bolt welded flange
Outlet Type A2 bolt welded flange
Overall Length (IN)58.5
Substrate MaterialCeramic
TypeFederal / epa direct-fit

This part fits 9 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2012SubaruLegacy2.5LH4RearDirect Fit; Federal Emissions; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2012SubaruOutback2.5LH4RearDirect Fit; (10-12); Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2012SubaruOutback2.5LH4RearDirect Fit; Federal Emissions; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2011SubaruLegacy2.5LH4RearDirect Fit; Federal Emissions; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2011SubaruOutback2.5LH4RearDirect Fit; (10-12); Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2011SubaruOutback2.5LH4RearDirect Fit; Federal Emissions; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2010SubaruLegacy2.5LH4RearDirect Fit; Federal Emissions; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2010SubaruOutback2.5LH4RearDirect Fit; (10-12); Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.
2010SubaruOutback2.5LH4RearDirect Fit; Federal Emissions; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and 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:

44620AC10A

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