HomeExhaust > Catalytic ConverterAP Exhaust 642863 Catalytic Converter - Front
Part #: 642863

AP Exhaust 642863 Catalytic Converter - Front

Direct Fit Converter, Front
⚙️ 15 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, Front
🚗Fitment: Subaru, Impreza, Legacy, and Outback
🔄Easy Returns — Return within 60 days for a full refund
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Overview of AP Exhaust Direct Fit Converter 642863

The AP Exhaust Direct Fit Converter 642863 is designed specifically for Subaru Impreza, Legacy, and Outback models. This catalytic converter features a stainless steel body and a ceramic substrate to meet Federal EPA standards, ensuring reliable emissions control and durability.

  • Constructed with durable stainless steel body material
  • Ceramic substrate for effective catalytic conversion
  • Federal / EPA direct-fit design for Subaru Impreza, Legacy, and Outback
  • 5 bolt welded flange inlet and 2 bolt welded flange outlet
  • Overall length of 20.5 inches for precise fitment

Direct Fit Converter Product Line Details

The Direct Fit Converter line by AP Exhaust focuses on providing catalytic converters that meet Federal EPA requirements with exact fitment for specific vehicle models. This product line eliminates the need for modifications by using direct-fit designs, such as the 5 bolt welded flange inlet and 2 bolt welded flange outlet found on part number 642863. These converters are engineered to integrate seamlessly with the original exhaust system of Subaru vehicles, maintaining factory performance and emissions compliance.

Product Features and Specifications

The AP Exhaust catalytic converter 642863 is built with a stainless steel body that resists corrosion and withstands high temperatures. Its ceramic substrate efficiently converts harmful exhaust gases into less harmful emissions. The inlet features a 5 bolt welded flange, while the outlet uses a 2 bolt welded flange, both designed for direct replacement without additional gaskets or hardware. With an overall length of 20.5 inches, this converter fits precisely within the exhaust system of compatible Subaru models.

Compatible Vehicles and Applications

  • Subaru Impreza catalytic converter replacement
  • Subaru Legacy emissions system repair
  • Subaru Outback exhaust system upgrade
  • Federal EPA compliant catalytic converter for Subaru vehicles
  • Direct-fit catalytic converter for Subaru models requiring part number 642863

Installation Notes and Tips

This catalytic converter is designed for direct fit installation on Subaru Impreza, Legacy, and Outback models. No inlet or outlet gaskets or hardware are included, so ensure existing components are in good condition or replaced as needed. The 5 bolt welded flange inlet and 2 bolt welded flange outlet allow for straightforward mounting. Professional installation is recommended to verify proper fitment and emissions compliance.

Quality Assurance and Warranty

AP Exhaust manufactures the Direct Fit Converter line to meet Federal EPA standards, ensuring emissions compliance and durability. The stainless steel construction and ceramic substrate provide long-lasting performance. Warranty details for part number 642863 should be confirmed with the manufacturer or authorized distributor.

BrandAP Exhaust
Part Number642863
PositionDirect Fit Converter, Front
Body MaterialStainless steel
Inlet GasketNone
Inlet HardwareNone
Inlet Type A5 bolt welded flange
O2 Sensor PortsNone
Outlet GasketNone
Outlet HardwareNone
Outlet Type A2 bolt welded flange
Overall Length (IN)20.5
Substrate MaterialCeramic
TypeFederal / epa direct-fit

This part fits 15 vehicles. Search below:

YearMakeModelSubmodelTransmissionLitersCylindersPositionNotes
2012SubaruImprezaWRX STI2.5LH4FrontDirect 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.
2011SubaruImprezaWRX STI2.5LH4FrontDirect 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.
2010SubaruImprezaWRX STI2.5LH4FrontDirect 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.
2009SubaruImprezaWRX STI2.5LH4FrontDirect 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.
2009SubaruLegacyAutomatic2.5LH4FrontDirect 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.
2009SubaruOutbackAutomatic2.5LH4FrontDirect 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.
2008SubaruImprezaWRX STI2.5LH4FrontDirect 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.
2008SubaruLegacyAutomatic2.5LH4FrontFederal and California Emissions; Direct Fit Converter
2008SubaruOutbackAutomatic2.5LH4FrontDirect 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.
2007SubaruLegacyAutomatic2.5LH4FrontDirect 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.
2007SubaruOutbackAutomatic2.5LH4FrontDirect 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.
2006SubaruLegacyAutomatic2.5LH4FrontDirect 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.
2006SubaruOutbackAutomatic2.5LH4FrontDirect 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.
2005SubaruLegacyAutomatic2.5LH4FrontDirect 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.
2005SubaruOutbackAutomatic2.5LH4FrontDirect 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.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.