{"product_id":"o2-oxygen-sensor-upstream-downstream-for-lexus-es-2007-2011-3-5l","title":"O2 Oxygen Sensor Upstream Downstream for Lexus ES (2007-2011) 3.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Oxygen Sensor Kit for 2007-2011 Lexus ES (XV40)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Direct-Fit Oxygen Sensor Kit replaces worn upstream air-fuel ratio and downstream lambda sensors on the 2007-2011 Lexus ES to restore factory fuel trim accuracy, optimize closed-loop engine management, and resolve diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lexus ES Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eWith accumulated mileage and continuous exposure to exhaust heat cycles, the factory zirconia sensing elements and internal ceramic heaters on the \u003cstrong\u003eXV40\u003c\/strong\u003e platform degrade. In the transverse \u003cstrong\u003e2GR-FE\u003c\/strong\u003e engine bay, Bank 1 firewall clearances trap extreme exhaust heat, accelerating sensor fouling from unburnt hydrocarbons and carbon particulates. This causes slow switching response times, asymmetric fuel-trim drift between banks, rough idle, unexpected fuel consumption spikes, and recurring trouble codes such as P0171, P0174, P0420, or P0430.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive 4-piece sensor package replaces both upstream wideband air-fuel ratio (A\/F) sensors and downstream post-cat heated oxygen sensors simultaneously. Featuring laser-welded stainless steel bodies, fast-activating ceramic heater elements, and high-temperature dual-layer protection tubes, each sensor delivers rapid closed-loop transition times and resilient protection against thermal shock and exhaust contamination. Factory-pinned, weather-sealed terminal connectors and pre-loomed wiring eliminate the need for wire cutting, crimping, or re-pinning.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Upstream Oxygen \/ Air-Fuel Ratio Sensor (Part # 234-9050)\u003c\/li\u003e\n  \u003cli\u003e1x Upstream Oxygen \/ Air-Fuel Ratio Sensor (Part # 234-9041)\u003c\/li\u003e\n  \u003cli\u003e1x Downstream Oxygen Sensor (Part # 234-4064)\u003c\/li\u003e\n  \u003cli\u003e1x Downstream Oxygen Sensor (Part # 234-4260)\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: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2007-2011 Lexus ES\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-FE\u003c\/strong\u003e \/ \u003cstrong\u003eXV40\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;\"\u003e272 hp \/ 254 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\u003eS4-4064\u003c\/strong\u003e, \u003cstrong\u003e234-4260\u003c\/strong\u003e, \u003cstrong\u003e234-9041\u003c\/strong\u003e, \u003cstrong\u003e234-9050\u003c\/strong\u003e, \u003cstrong\u003e2344046\u003c\/strong\u003e, \u003cstrong\u003e2344260\u003c\/strong\u003e, \u003cstrong\u003e2349041\u003c\/strong\u003e, \u003cstrong\u003e2349050\u003c\/strong\u003e, \u003cstrong\u003e2344064\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\u003e2007-2011 Lexus ES350 Base Sedan 3.5L V6 (Engine: 2GR-FE, Chassis: XV40)\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 XV40 ES?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2011 Lexus ES equipped with the \u003cstrong\u003e2GR-FE\u003c\/strong\u003e 3.5L engine.\u003c\/p\u003e\n\n\u003ch4\u003eAre these direct plug-in sensors or do they require wire splicing?\u003c\/h4\u003e\n\u003cp\u003eThese sensors come with direct-fit OEM-style connectors and factory-length wiring harnesses, allowing simple plug-and-play installation without wire stripping or soldering.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lexus Standard\u003c\/h3\u003e\n\u003cp\u003eThe refined operation of the Lexus luxury platform depends on accurate closed-loop stoichiometric feedback. Installing a fully matched sensor set across both exhaust banks ensures smooth, vibration-free idling, optimal MPG, and complete emission compliance without nuisance Check Engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551488704760,"sku":"DS-EXHMQGYRT","price":98.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-lexus-es-2007-2011-3-5l-1.jpg?v=1790797244","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-lexus-es-2007-2011-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}