{"product_id":"catalytic-converter-for-lexus-is350-2006-2013-3-5l","title":"Catalytic Converter for Lexus IS350 (2006-2013) 3.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Catalytic Converter for 2006-2013 Lexus IS (GSE21)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Direct-Fit Catalytic Converter replaces degraded factory exhaust catalysts on the 2006-2013 IS to restore factory exhaust scavenging, maintain OBD II emissions compliance, and clear catalyst efficiency fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lexus IS Catalyst Degradation\u003c\/h3\u003e\n\u003cp\u003eOver extended heat cycles and high-mileage operation, the factory ceramic substrate inside the \u003cstrong\u003eGSE21\u003c\/strong\u003e exhaust assembly experiences thermal degradation and washcoat depletion. This structural breakdown restricts exhaust velocity, promotes internal core fracturing, and diminishes precious metal catalytic activity. Once conversion efficiency drops below the factory ECM threshold, downstream oxygen sensors trigger recurring P0420 and P0430 diagnostic trouble codes, compromising engine management trimming and leading to failed state tailpipe and OBD II inspections.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed with a heavy-gauge \u003cstrong\u003estainless steel\u003c\/strong\u003e outer shell and tubing, this direct-fit replacement converter withstands severe exhaust gas temperatures and external corrosion. The internal high-flow \u003cstrong\u003eceramic substrate\u003c\/strong\u003e features an optimized precious-metal washcoat formulated for reliable hydrocarbon, carbon monoxide, and NOx reduction. Precision 2-bolt welded flanges, factory-positioned O2 sensor bungs, and OE-spec pipe routing eliminate exhaust leaks, ensuring a leak-free seal without custom fabrication, pipe expansion, or ECU recalibration.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Set Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003eInstallation Accessories (Mounting Hardware \u0026amp; Gaskets)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2006-2013 Lexus IS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e2GR-FSE\u003c\/strong\u003e \/ \u003cstrong\u003eGSE21\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e306 hp \/ 277 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e643053\u003c\/strong\u003e, \u003cstrong\u003e643129\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2006 Lexus IS350 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2007 Lexus IS350 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2008 Lexus IS350 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2009 Lexus IS350 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2010 Lexus IS350 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2011 Lexus IS350 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2012 Lexus IS350 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2013 Lexus IS350 3.5L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GSE21 IS?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2006-2013 Lexus IS equipped with the \u003cstrong\u003e2GR-FSE\u003c\/strong\u003e engine. \u003cstrong\u003eNon-CARB compliant: Not legal for sale, installation, or use on licensed vehicles in California, New York, Colorado, or Maine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre gaskets and hardware included with this assembly?\u003c\/h4\u003e\n\u003cp\u003eYes, this converter package includes the required installation accessories and mounting hardware for complete bolt-on installation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lexus Standard\u003c\/h3\u003e\n\u003cp\u003eMaintain the signature smooth V6 acoustic profile and factory engine responsiveness of your JDM sports sedan while ensuring clean tailpipe emissions and zero check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67916145787128,"sku":"DS-E9PZN0538","price":233.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-lexus-is350-2006-2013-3-5l-1.jpg?v=1793472985","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-lexus-is350-2006-2013-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}