{"product_id":"catalytic-converter-for-lexus-gx-2005-2009-4-7l-front-left-right","title":"Catalytic Converter for Lexus GX (2005-2009) 4.7L Front Left \u0026 Right","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Catalytic Converter Set for 2005-2009 Lexus GX (J120)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The front left and right catalytic converter set replaces deteriorated factory manifold converters on the 2005-2009 Lexus GX to clear diagnostic trouble codes P0420\/P0430 and restore factory exhaust velocity.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lexus GX Manifold Substrate Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory exhaust manifolds on the \u003cstrong\u003eJ120\u003c\/strong\u003e platform feature integrated ceramic washcoats that endure intense thermal cycling from the 4.7L V8. Over time, high exhaust gas temperatures and carbon accumulation degrade the precious metal washcoat, causing washcoat sintering and structural thermal fracture of the ceramic core. This breakdown triggers persistent \u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e catalyst efficiency fault codes, generates upstream backpressure that strangles exhaust scavenging, and can result in foul rotten-egg hydrogen sulfide odors or internal substrate rattle under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct-fit bolt-on assembly, this left and right manifold converter pair features high-grade stainless steel outer shells that resist road-salt corrosion and high-temperature oxidation. Inside, a durable ceramic honeycomb substrate provides optimal cell density (CPSI) to maximize surface area contact with exhaust gasses without creating restrictive backpressure. Heavy-gauge, precision-machined mounting flanges mate flush against the cylinder heads and downpipes to eliminate blow-by leaks, while integrated factory-location O2 sensor bungs preserve accurate downstream fuel-trim feedback to the engine control module.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Front Left Exhaust Manifold Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003e1x Front Right Exhaust Manifold Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003eExhaust Installation Gaskets\u003c\/li\u003e\n  \u003cli\u003eInstallation Hardware\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;\"\u003e2005-2009 Lexus GX\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\u003e2UZ-FE\u003c\/strong\u003e \/ \u003cstrong\u003eJ120\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;\"\u003e263 hp \/ 323 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\u003e17140-50060\u003c\/strong\u003e, \u003cstrong\u003e17150-50050\u003c\/strong\u003e, \u003cstrong\u003e327-59542R\u003c\/strong\u003e, \u003cstrong\u003e327-59543L\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\u003e2005 Lexus GX470 Base Sport Utility 4.7L V8\u003c\/li\u003e\n  \u003cli\u003e2006 Lexus GX470 Base Sport Utility 4.7L V8\u003c\/li\u003e\n  \u003cli\u003e2007 Lexus GX470 Base Sport Utility 4.7L V8\u003c\/li\u003e\n  \u003cli\u003e2008 Lexus GX470 Base Sport Utility 4.7L V8\u003c\/li\u003e\n  \u003cli\u003e2009 Lexus GX470 Base Sport Utility 4.7L V8\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 J120 GX?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2005-2009 Lexus GX equipped with the \u003cstrong\u003e2UZ-FE\u003c\/strong\u003e 4.7L V8 engine. \u003cstrong\u003eNot legal for sale or installation in California, Colorado, New York, or Maine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs welding or pipe cutting required for installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this unit utilizes OEM-style bolt-on flanges that mount directly to factory exhaust studs and downpipe connections without fabrication.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lexus Truck Durability\u003c\/h3\u003e\n\u003cp\u003eBuilt for the severe-duty demands of overland utility and heavy towing, this converter assembly restores critical low-end exhaust dynamics and structural exhaust integrity across rough terrain.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67901874897144,"sku":"DS-EMTJDD4JV","price":410.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-lexus-gx-2005-2009-4-7l-front-left-right-1.jpg?v=1793341904","url":"https:\/\/performancechiptuning.com\/de\/products\/catalytic-converter-for-lexus-gx-2005-2009-4-7l-front-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}