AP Exhaust 771474 Catalytic Converter - Left or Right

CARB Compliant Direct-Fit Catalytic Converter

AP Exhaust 771474 is a CARB compliant direct-fit catalytic converter built for California emissions applications on select Lexus models. It uses a metallic substrate and stainless steel body construction, with OE-style inlet and outlet flange connections for accurate fitment on the left or right side where listed.

Key Features

• CARB compliant direct-fit catalytic converter
• Stainless steel body for corrosion resistance
• Metallic substrate material for efficient exhaust flow
• OE-dimensioned construction for direct replacement fitment
• 3-bolt welded flange inlet with gasket stub
• 2-bolt welded flange outlet with gasket stub
• Inlet gasket and outlet gasket included
• No O2 sensor ports
• Executive Order D-798-9

Product Details

AP Exhaust 771474 is part of the 1TYXV04.3JJA product line, which focuses on exact OE dimensions and fitment using advanced manufacturing methods and proprietary substrate chemistry. The result is a direct-fit catalytic converter engineered for consistent installation geometry and efficient converter performance in emissions-controlled applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Vehicle Fitment

• Fits 2009 Lexus SC430, left
• Fits 2009 Lexus SC430, right
• Fits 2008 Lexus SC430, left
• Fits 2008 Lexus SC430, right
• Fits 2007 Lexus GS430, left
• Fits 2007 Lexus GS430, right
• Fits 2007 Lexus SC430, left
• Fits 2007 Lexus SC430, right
• Fits 2006 Lexus GS430, left
• Fits 2006 Lexus GS430, right
• Fits 2006 Lexus LS430, left
• Fits 2006 Lexus LS430, right
• Fits 2006 Lexus SC430, left
• Fits 2006 Lexus SC430, right
• Fits 2005 Lexus GS430, left
• Fits 2005 Lexus GS430, right
• Fits 2005 Lexus LS430, left
• Fits 2005 Lexus LS430, right
• Fits 2005 Lexus SC430, left
• Fits 2005 Lexus SC430, right
• Fits 2004 Lexus GS430, left
• Fits 2004 Lexus GS430, right
• Fits 2004 Lexus LS430, left
• Fits 2004 Lexus LS430, right
• Fits 2004 Lexus SC430, left
• Fits 2004 Lexus SC430, right
• Fits 2003 Lexus GS430, left
• Fits 2003 Lexus GS430, right
• Fits 2003 Lexus LS430, left
• Fits 2003 Lexus LS430, right
• Fits 2003 Lexus SC430, left
• Fits 2003 Lexus SC430, right
• Fits 2002 Lexus GS430, left
• Fits 2002 Lexus GS430, right
• Fits 2002 Lexus LS430, left
• Fits 2002 Lexus LS430, right
• Fits 2002 Lexus SC430, left
• Fits 2002 Lexus SC430, right
• Fits 2001 Lexus GS430, left
• Fits 2001 Lexus GS430, right
• Fits 2001 Lexus LS430, left
• Fits 2001 Lexus LS430, right

Common Replacement Reasons

• Failed emissions test or catalyst efficiency fault
• Check engine light related to catalytic converter performance
• Damaged, rusted, or leaking factory converter assembly
• Exhaust restriction or reduced exhaust flow
• Need for a California-compliant direct replacement on Lexus GS430, LS430, or SC430

Installation Notes

Verify side-specific fitment before ordering, since this application is listed for left and right positions depending on year and model. The converter uses welded flange connections with gasket stubs and no O2 sensor ports, so confirm your vehicle’s exhaust layout and sensor placement before installation. Professional installation is recommended to ensure proper sealing and emissions compliance.

Quality Assurance

AP Exhaust Holdings, LLC identifies this converter under Executive Order D-798-9 for California emissions compliance. The 1TYXV04.3JJA line is manufactured to OE dimensions using automated production and spinner welding processes to support consistent fitment and build quality.