AP Exhaust 771542 Catalytic Converter - Front Right

Direct-Fit Catalytic Converter for Buick LaCrosse

AP Exhaust 771542 is a CARB compliant direct-fit catalytic converter built for exact OE dimensions and fitment. It is engineered for the front right position on select Buick LaCrosse models and uses a ceramic substrate with welded flange connections for a precise exhaust seal.

The AGMXJ03.6151 product line focuses on OE-style fitment and manufacturing consistency. AP Exhaust uses automated production processes and spinner welding equipment to help maintain dimensional accuracy, while the substrate chemistry is formulated for efficient catalyst loading and controlled production cost.

• CARB compliant direct-fit catalytic converter
• Fits 2010 Buick LaCrosse, front right
• Fits 2011 Buick LaCrosse, front right
• Ceramic substrate material
• 3-bolt welded inlet flange and 2-bolt welded outlet flange
• No O2 sensor ports
• Overall length: 10.5 in.
• Executive Order D-798-9

Detailed Product Overview

AP Exhaust 771542 is built for drivers needing a direct replacement catalytic converter for California-emissions applications on the Buick LaCrosse. The converter is designed to match OE dimensions for the front right exhaust location, helping ensure proper alignment with the factory exhaust system. This part number is also identified with the AGMXJ03.6151 line and is listed for 2010 Buick LaCrosse and 2011 Buick LaCrosse applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Can Address

• Failed catalytic converter emissions testing
• Check engine light related to catalyst efficiency
• Restricted exhaust flow from a worn converter
• Corrosion or damage at the original converter housing
• Fitment problems when replacing a factory front right converter

Installation Notes and Tips

Verify the vehicle’s emissions label and confirm California compliance before installation. This converter uses a 3-bolt welded flange at the inlet and a 2-bolt welded flange at the outlet, with no O2 sensor ports, so sensor placement must match the vehicle’s existing exhaust configuration. Confirm the front right position and compare the original unit’s dimensions and flange layout to the new part before installation.

Quality Assurance

AP Exhaust states that this converter is manufactured to exact OE dimensions using automated workstations and high-speed production lines. The unit carries Executive Order D-798-9 and is listed as CARB compliant for the specified Buick LaCrosse applications.