{"product_id":"o2-oxygen-sensor-upstream-downstream-for-nissan-altima-2015-2018-3-5l","title":"O2 Oxygen Sensor Upstream Downstream for Nissan Altima (2015-2018) 3.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Oxygen Sensor Set for 2015-2018 Nissan Altima (L33)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete 4-piece oxygen sensor kit monitors pre- and post-catalytic exhaust gas stoichiometry on the 2015-2018 Nissan Altima 3.5L to restore closed-loop air-fuel metering and clear catalytic converter diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Altima Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eHigh-mileage factory zirconia elements mounted on the \u003cstrong\u003eVQ35DE\u003c\/strong\u003e exhaust manifolds suffer from severe thermal cycling, oil mist contamination, and silicon-induced glazing. As internal ceramic heater circuits degrade, signal response rates drop drastically, causing delayed fuel trims, poor gas mileage, and persistent CEL activation with fault codes such as P0420, P0430, or P0130 across Banks 1 and 2.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to match factory operational parameters, each sensor features a high-grade 304 stainless steel body with a double-laser-welded submersible shield to lock out moisture and soot contamination. Fast-firing internal ceramic heating elements allow the planar sensing substrate to achieve 600°F light-off temperatures in seconds. Pre-calibrated harness lengths with factory-style locking connectors and weather-sealed terminals replace failing units directly—interchanging with OEM references \u003cstrong\u003e22693-1PM0A\u003c\/strong\u003e and \u003cstrong\u003e234-9148\u003c\/strong\u003e for steady millivolt feedback and optimized ECM fuel-delivery calculations.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e4 x Direct-Fit Oxygen Sensors (Complete Upstream and Downstream Set)\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;\"\u003e2015-2018 Nissan Altima\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\u003eVQ35DE\u003c\/strong\u003e 3.5L V6 \/ \u003cstrong\u003eL33\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;\"\u003e270 hp \/ 251 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;\"\u003e22693-1PM0A, 226A0-BV81A, 234-4985, 234-4986, 234-9148, 22693-9HP0A, 226A0-4LA1A, 2344985, 2344986, 2349148\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\u003e2015-2018 Nissan Altima 3.5L V6 (SL, SR Trims)\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 L33 Altima?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2015-2018 Nissan Altima equipped with the 3.5L \u003cstrong\u003eVQ35DE\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit 2.5L QR25DE 4-cylinder models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs harness splicing required during installation?\u003c\/h4\u003e\n\u003cp\u003eNo, these sensors feature factory-style direct-plug connectors for a true plug-and-play installation without wire cutting.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan Powertrain Caliber\u003c\/h3\u003e\n\u003cp\u003eMaintaining fast stoichiometric feedback is vital for the \u003cstrong\u003eVQ35DE\u003c\/strong\u003e to deliver smooth, high-revving throttle response while safeguarding expensive three-way catalytic converters from unburned hydrocarbons.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551279317240,"sku":"DS-E0RG0LOOZ","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-nissan-altima-2015-2018-3-5l-1.jpg?v=1790794427","url":"https:\/\/performancechiptuning.com\/de\/products\/o2-oxygen-sensor-upstream-downstream-for-nissan-altima-2015-2018-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}