{"product_id":"oxygen-sensors-for-kia-optima-2011-2013-2-0l-2-4l-downstream","title":"Oxygen Sensors for Kia Optima (2011-2013) 2.0L, 2.4L Downstream","description":"\u003ch2\u003eDirect-Fit Downstream Oxygen Sensor for 2011-2013 Kia Optima\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Downstream Oxygen Sensor monitors post-catalytic converter exhaust gases on the 2011-2013 Kia Optima to maintain emissions compliance and calibrate secondary fuel trims.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Kia Optima Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eTF\u003c\/strong\u003e platform are subjected to continuous thermal cycling, carbon loading, and sulfur contamination. Over time, the factory downstream zirconia element loses sensitivity, leading to delayed voltage switching, inaccurate post-cat monitoring, and false diagnostic trouble codes such as P0420. Exhaust leaks, unburned fuel wash, and moisture from repeated cold-start condensation accelerate element poisoning, directly degrading closed-loop fuel management and triggering dashboard check engine lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement downstream sensor utilizes a high-precision planar zirconia ceramic element paired with an internal ceramic heating circuit for ultra-fast light-off times. The sensing cell is protected by an exterior dual-layer 304 stainless steel shield that resists thermal shock and prevents raw carbon soot from fouling the core. Pre-terminated with an OEM-spec weather-pack connector and high-temperature PTFE-coated lead wires, it delivers factory-matched millivolt response to the vehicle ECU with zero wire splicing required.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\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;\"\u003e2011-2013 Kia Optima\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;\"\u003eTheta II (2.0L Turbo \/ 2.4L) \/ TF\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;\"\u003e200–274 hp \/ 186–269 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;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2011-2013 Kia Optima LX 2.4L Sedan\u003c\/li\u003e\n  \u003cli\u003e2011-2013 Kia Optima EX 2.4L Sedan\u003c\/li\u003e\n  \u003cli\u003e2011-2013 Kia Optima SX 2.0L Turbo Sedan\u003c\/li\u003e\n  \u003cli\u003e2013 Kia Optima SXL 2.0L Turbo Sedan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the TF Optima?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2011-2013 Kia Optima equipped with the \u003cstrong\u003eTheta II\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this downstream sensor clear a P0420 trouble code?\u003c\/strong\u003e\u003cbr\u003e It will resolve the code if the fault stems from sensor switching latency or heater circuit failure rather than a physically damaged catalyst brick.\u003c\/p\u003e\n\n\u003ch3\u003eThe Kia Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eModern direct-injected platforms demand exact closed-loop sensor feedback to prevent unburned fuel from washing cylinder walls or overheating the exhaust stream. Installing precise, durable oxygen sensors guarantees factory-spec emissions parameters, dependable fuel mileage, and proper drivability under all operating conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511755313400,"sku":"DS-E09UW89XQ","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-kia-optima-2011-2013-2-0l-2-4l-downstream-1.jpg?v=1789418977","url":"https:\/\/performancechiptuning.com\/es\/products\/oxygen-sensors-for-kia-optima-2011-2013-2-0l-2-4l-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}