{"product_id":"o2-oxygen-sensor-upstream-downstream-for-acura-tsx-2009-2014-2-4l","title":"O2 Oxygen Sensor Upstream Downstream for Acura TSX (2009-2014) 2.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit O2 Oxygen Sensor Kit for 2009-2014 Acura TSX (CU2)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upstream and Downstream Oxygen Sensor Kit restores accurate closed-loop air-fuel metering and emissions monitoring on the 2009-2014 Acura TSX to eliminate diagnostic trouble codes and optimize combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Acura TSX Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory lambda sensors on the high-revving \u003cstrong\u003eK24Z3\u003c\/strong\u003e engine suffer from thermal fatigue, silicone contamination, and soot accumulation over time. Prolonged exposure to 1,400°F exhaust gas temperatures degrades the internal zirconium dioxide ceramic element and internal heater circuits. This wear leads to sluggish switching response, false lean readings, unmetered rich fuel trims, fouled spark plugs, failed emissions tests, and recurring check engine lights such as P0134, P0135, or P0420.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 2-piece sensor set provides matched factory-spec monitoring for both pre-catalyst wideband air-fuel ratio metering and post-catalyst emissions verification. Constructed with double-layer 310 stainless steel shielding, high-grade planar ceramic sensing elements, and integrated fast-acting ceramic heaters, these sensors deliver rapid light-off and precise voltage feedback to the ECU. Pre-crimped OE-style weatherproof wiring harnesses with factory-correct pinouts and high-temperature PTFE insulation ensure true plug-and-play installation without wire splicing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Upstream Oxygen (Air-Fuel Ratio) Sensor\u003c\/li\u003e\n  \u003cli\u003e1x Downstream Oxygen Sensor\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;\"\u003e2009-2014 Acura TSX\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\u003eK24Z3\u003c\/strong\u003e \/ \u003cstrong\u003eCU2\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;\"\u003e201 hp \/ 170 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\u003e234-4462\u003c\/strong\u003e, \u003cstrong\u003e234-9091\u003c\/strong\u003e, \u003cstrong\u003e24434\u003c\/strong\u003e, \u003cstrong\u003e36531R40A01\u003c\/strong\u003e, \u003cstrong\u003e36531R40A06\u003c\/strong\u003e, \u003cstrong\u003e36531RB0003\u003c\/strong\u003e, \u003cstrong\u003e36531RTW003\u003c\/strong\u003e, \u003cstrong\u003e36531RWCA02\u003c\/strong\u003e, \u003cstrong\u003e36532R40A01\u003c\/strong\u003e, \u003cstrong\u003e800 21090 065\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\u003e2009-2014 Acura TSX Base Sedan 2.4L 4-Cylinder\u003c\/li\u003e\n  \u003cli\u003e2011-2014 Acura TSX Sport Wagon 2.4L 4-Cylinder\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 CU2 TSX?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2009-2014 Acura TSX equipped with the \u003cstrong\u003eK24Z3\u003c\/strong\u003e 2.4L 4-cylinder engine; it does not fit 3.5L V6 (J35Z6) models.\u003c\/p\u003e\n\n\u003ch4\u003eShould anti-seize compound be used during installation?\u003c\/h4\u003e\n\u003cp\u003eUse high-temperature anti-seize exclusively on the sensor threads while taking strict care not to contaminate the exposed ceramic sensor tip.\u003c\/p\u003e\n\n\u003ch3\u003eThe Acura Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle high-rpm Honda i-VTEC exhaust dynamics, this matched O2 sensor set maintains precise stoichiometric control to deliver crisp throttle response and clean tailpipe emissions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551243108600,"sku":"DS-ED5BVY13Z","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-acura-tsx-2009-2014-2-4l-1.jpg?v=1790793949","url":"https:\/\/performancechiptuning.com\/es\/products\/o2-oxygen-sensor-upstream-downstream-for-acura-tsx-2009-2014-2-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}