HomeExhaust > Catalytic ConverterAP Exhaust 641564 Catalytic Converter - Front Left
Part #: 641564

AP Exhaust 641564 Catalytic Converter - Front Left

Front Left
⚙️ 4 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: Buick, LaCrosse
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AP Exhaust Catalytic Converter for Buick LaCrosse

The AP Exhaust catalytic converter part number 641564 is designed specifically for Buick LaCrosse models, providing a direct-fit replacement that meets Federal and EPA standards. This catalytic converter ensures proper emission control and helps maintain your vehicle's environmental compliance.

Key Features of AP Exhaust Catalytic Converter 641564

  • Direct-fit catalytic converter compatible with Buick LaCrosse
  • Federal / EPA compliant design for emission control
  • Ceramic substrate material for effective pollutant conversion
  • Overall length of 13 inches for precise fitment
  • Inlet type: 3 bolt welded connection with one inlet gasket included
  • Outlet type: 2 bolt welded connection with one outlet gasket and hardware included
  • Equipped with one O2 sensor port for accurate sensor placement

Detailed Product Description

This AP Exhaust catalytic converter (part number 641564) is engineered to replace the factory catalytic converter on Buick LaCrosse vehicles. Featuring a ceramic substrate, it efficiently converts harmful exhaust gases into less harmful emissions. The inlet connection uses a 3 bolt welded flange with one inlet gasket included, while the outlet connection features a 2 bolt welded flange with one outlet gasket and necessary hardware. The unit includes one O2 sensor port to accommodate the vehicle’s oxygen sensor, ensuring proper engine management and emission monitoring. With an overall length of 13 inches, this catalytic converter is designed for a precise fit and reliable performance.

Common Applications and Issues Addressed

  • Replacement for a damaged or clogged catalytic converter on Buick LaCrosse
  • Restores proper emission control to pass Federal and EPA inspections
  • Resolves check engine light issues related to catalytic converter failure
  • Improves exhaust flow and reduces harmful emissions
  • Maintains vehicle compliance with environmental regulations

Installation Notes and Tips

When installing the AP Exhaust catalytic converter 641564, ensure the inlet and outlet gaskets are properly seated to prevent exhaust leaks. The 3 bolt welded inlet and 2 bolt welded outlet connections require matching hardware; note that inlet hardware is not included. Verify the O2 sensor port alignment for correct sensor installation. Professional installation is recommended to ensure proper fitment and function.

Quality Assurance and Warranty

AP Exhaust catalytic converters are manufactured to meet Federal and EPA standards for emissions control. This part number 641564 undergoes quality checks to ensure durability and performance. Warranty information is provided by AP Exhaust and should be confirmed at the time of purchase.

BrandAP Exhaust
Part Number641564
Inlet Gasket Qty1
Inlet HardwareNone
Inlet Type A3 bolt welded
O2 Sensor Ports1
Outlet Gasket Qty1
Outlet HardwareYes
Outlet Type A2 bolt welded
Overall Length (IN)13
Substrate MaterialCeramic
TypeFederal / epa direct-fit

This part fits 4 vehicles. Search below:

YearMakeModelDrive TypeLitersCylindersPositionNotes
2011BuickLaCrosseFWD3.6LV6Front LeftDirect Fit; (10-11); 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.
2011BuickLaCrosse3.6LV6Front LeftDirect 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.
2010BuickLaCrosseFWD3.6LV6Front LeftDirect Fit; (10-11); 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.
2010BuickLaCrosse3.6LV6Front LeftDirect 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.

This part directly replaces or is cross-referenced with the following part numbers:

25798276

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