{"product_id":"upstream-downstream-o2-oxygen-sensor-for-nissan-maxima-3-5l","title":"Upstream \u0026 Downstream O2 Oxygen Sensor for Nissan Maxima 3.5L","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"786\" class=\"\"\u003eThe Upstream \u0026amp; Downstream O2 Oxygen Sensors for Nissan Maxima 3.5L are used in engine management systems to monitor exhaust oxygen levels before and after the catalytic converter for precise air-fuel ratio control and emissions compliance. The upstream sensor regulates fuel mixture feedback to the ECU, while the downstream sensor monitors catalytic converter efficiency. Commonly installed on Nissan Maxima 3.5L V6 models where emissions control, fuel economy optimization, and diagnostic monitoring are required. Automotive technicians and repair specialists use these sensors for emissions system repair, engine performance restoration, and replacement of failed oxygen sensors affecting fuel trim or check engine light faults. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"788\" data-end=\"805\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"806\" data-end=\"1164\"\u003eThese oxygen sensors are commonly used in Nissan Maxima 3.5L V6 exhaust systems including fuel injection control loops, catalytic converter monitoring, emissions compliance systems, and OBD-II diagnostic systems where accurate oxygen sensing is required to maintain optimal combustion efficiency, reduce emissions output, and ensure proper catalyst function.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1166\" data-end=\"1195\" class=\"PDq2pG_selectionAnchorContainer\"\u003eTechnical Specifications:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1196\" data-end=\"2122\" class=\"\"\u003e• Manufacturer: OEM \/ aftermarket automotive sensor\u003cbr data-start=\"1247\" data-end=\"1250\"\u003e• Model \/ Part number: Vehicle-specific (Nissan Maxima 3.5L upstream \u0026amp; downstream set)\u003cbr data-start=\"1336\" data-end=\"1339\"\u003e• Product type: Heated zirconia oxygen sensors (air-fuel ratio \/ O2 sensors)\u003cbr data-start=\"1415\" data-end=\"1418\"\u003e• Vehicle compatibility: Nissan Maxima 3.5L V6 (multiple model years, typically 2009–present variants)\u003cbr data-start=\"1520\" data-end=\"1523\"\u003e• Sensor positions: Upstream (Bank 1 Sensor 1) \/ Downstream (Bank 1 Sensor 2)\u003cbr data-start=\"1600\" data-end=\"1603\"\u003e• Output signal: 0.1–0.9 V switching (narrowband type typical) or AFR wideband (upstream variant dependent)\u003cbr data-start=\"1710\" data-end=\"1713\"\u003e• Heater circuit: Integrated 12V heater element for fast warm-up\u003cbr data-start=\"1777\" data-end=\"1780\"\u003e• Thread size: M18 x 1.5 (common automotive standard)\u003cbr data-start=\"1833\" data-end=\"1836\"\u003e• Body material: Stainless steel housing with ceramic sensing element\u003cbr data-start=\"1905\" data-end=\"1908\"\u003e• Function: Air-fuel ratio feedback and catalytic converter efficiency monitoring\u003cbr data-start=\"1989\" data-end=\"1992\"\u003e• Electrical connector: OEM sealed multi-pin automotive connector\u003cbr data-start=\"2057\" data-end=\"2060\"\u003e• Operating environment: High-temperature exhaust gas stream\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2124\" data-end=\"2148\" class=\"PDq2pG_selectionAnchorContainer\"\u003eCommon Replacements:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"2149\" data-end=\"2362\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Denso upstream + downstream O2 sensor set for Nissan Maxima 3.5L\u003cbr data-start=\"2215\" data-end=\"2218\"\u003e• Bosch direct-fit oxygen sensor pair (Maxima 3.5L application)\u003cbr data-start=\"2281\" data-end=\"2284\"\u003e• NTK \/ NGK OEM replacement oxygen sensor kit for Nissan VQ35DE\/VQ35DD engines\u003c\/p\u003e","brand":"PLG Automation ","offers":[{"title":"New","offer_id":51714382201134,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_8f1dc4af-4570-4042-8c69-25b3b75c9e7d.jpg?v=1770424821","url":"https:\/\/plgautomation.com\/products\/upstream-downstream-o2-oxygen-sensor-for-nissan-maxima-3-5l","provider":"PLG Automation ","version":"1.0","type":"link"}