{"product_id":"oxygen-sensors-for-acura-tsx-2004-2008-2-4l-upstream","title":"Oxygen Sensors for Acura TSX (2004-2008) 2.4L Upstream","description":"\u003ch2\u003eDirect-Fit Upstream Oxygen Sensor for 2004-2008 Acura TSX\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upstream Oxygen Sensor measures exhaust gas oxygen concentration ahead of the catalytic converter on the 2004-2008 Acura TSX to provide critical closed-loop feedback for precise air-fuel ratio management.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Acura TSX Lambda Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eOver thousands of heat cycles and prolonged exposure to exhaust contaminants, the factory upstream air-fuel ratio sensor on the \u003cstrong\u003eK24A2\u003c\/strong\u003e engine experiences thermal fatigue, ceramic substrate contamination, and internal heater element breakdown. This physical degradation dampens sensor response times, causing the powertrain control module to receive delayed signal feedback. The resulting latency skews Short-Term and Long-Term Fuel Trims (STFT\/LTFT), inducing uneven idle, sluggish off-idle throttle response, reduced fuel economy, and persistent diagnostic trouble codes such as P0134 or P0135.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement upstream sensor utilizes a fast-reacting planar zirconia element engineered for rapid light-off and continuous closed-loop monitoring. Housed in corrosion-resistant 304 stainless steel with precision-cut threads, it installs smoothly into the exhaust manifold bung without galling. High-temperature fluoropolymer wire insulation and sealed silicone boots protect the lead wires against extreme manifold thermal radiation and road debris. The OEM-pinned connector integrates directly with the \u003cstrong\u003eCL9\u003c\/strong\u003e wiring harness to eliminate splicing, immediately stabilizing fuel delivery and restoring engine efficiency.\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;\"\u003e2004-2008 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\u003eK24A2\u003c\/strong\u003e \/ \u003cstrong\u003eCL9\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;\"\u003e200-205 hp \/ 164-166 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\u003e2004-2008 Acura TSX Base Sedan 2.4L 4-Cylinder (Chassis: \u003cstrong\u003eCL9\u003c\/strong\u003e, Engine: \u003cstrong\u003eK24A2\u003c\/strong\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the CL9 TSX?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2004-2008 Acura TSX equipped with the \u003cstrong\u003eK24A2\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this resolve a P0134 or P0135 diagnostic trouble code?\u003c\/strong\u003e\u003cbr\u003e Yes, this sensor restores internal heater circuit continuity and signal communication, clearing upstream sensor-related check engine lights after an ECU reset.\u003c\/p\u003e\n\n\u003ch3\u003eThe Acura Performance Standard\u003c\/h3\u003e\n\u003cp\u003eThe high-revving \u003cstrong\u003eK24A2\u003c\/strong\u003e platform depends on real-time lambda accuracy to sustain clean VTEC crossover engagement and crisp transient response without running rich or fouling spark plugs.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511237710072,"sku":"DS-EMDGN9ZU0","price":75.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-acura-tsx-2004-2008-2-4l-upstream-1.jpg?v=1789411772","url":"https:\/\/performancechiptuning.com\/fr\/products\/oxygen-sensors-for-acura-tsx-2004-2008-2-4l-upstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}