{"product_id":"nox-sensor-8w0907807a-8w0907807g-5wk97259-audi-a4-a5-b9-diesel-scr-system","title":"NOx Sensor Nitrogen Oxide Sensor 8W0907807A \/ 8W0907807G \/ 5WK97259 for Audi A4 A5 B9 Diesel SCR System","description":"\u003cp data-start=\"128\" data-end=\"218\" class=\"PDq2pG_selectionAnchorContainer\"\u003eFitment\u003cbr data-start=\"135\" data-end=\"138\"\u003eCompatible with Volkswagen Group Euro 6 diesel emission systems (SCR \/ AdBlue)\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"220\" data-end=\"420\"\u003eVehicle applications include:\u003cbr data-start=\"249\" data-end=\"252\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eAudi A4\u003c\/span\u003e\u003c\/span\u003e\u003cbr data-start=\"289\" data-end=\"292\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eAudi A5\u003c\/span\u003e\u003c\/span\u003e\u003cbr data-start=\"329\" data-end=\"332\"\u003eOther VW Group MLB platforms using OEM part numbers 8W0907807A \/ 8W0907807G \/ 5WK97259\u003c\/p\u003e\n\u003chr data-start=\"422\" data-end=\"425\"\u003e\n\u003cp data-start=\"427\" data-end=\"432\"\u003eFAQ\u003c\/p\u003e\n\u003cp data-start=\"434\" data-end=\"624\"\u003eQ1: What is the function of this NOx sensor?\u003cbr data-start=\"478\" data-end=\"481\"\u003eA1: It measures nitrogen oxide levels in diesel exhaust and sends data to the SCR system to control AdBlue (DEF) dosing and reduce emissions.\u003c\/p\u003e\n\u003cp data-start=\"626\" data-end=\"848\"\u003eQ2: Are 8W0907807A, 8W0907807G, and 5WK97259 interchangeable?\u003cbr data-start=\"687\" data-end=\"690\"\u003eA2: They are OEM and aftermarket cross-reference numbers within the same sensor family, but exact matching is still required due to calibration differences.\u003c\/p\u003e\n\u003cp data-start=\"850\" data-end=\"1036\"\u003eQ3: Where is this sensor installed?\u003cbr data-start=\"885\" data-end=\"888\"\u003eA3: It is installed in the exhaust aftertreatment system, typically upstream or downstream of the SCR catalyst depending on vehicle configuration.\u003c\/p\u003e\n\u003cp data-start=\"1038\" data-end=\"1202\"\u003eQ4: Is this used only in Audi A4\/A5?\u003cbr data-start=\"1074\" data-end=\"1077\"\u003eA4: It is primarily used in Audi A4 and A5 B9 diesel SCR systems but may also appear in other VW Group MLB diesel vehicles.\u003c\/p\u003e\n\u003cp data-start=\"1204\" data-end=\"1330\"\u003eQ5: What are common failure symptoms?\u003cbr data-start=\"1241\" data-end=\"1244\"\u003eA5: Engine warning light, AdBlue\/SCR faults, NOx sensor signal errors, or limp mode.\u003c\/p\u003e","brand":"ASHENG","offers":[{"title":"Default Title","offer_id":51652454252676,"sku":"8W0907807A\/5WK97259","price":247.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8313\/1012\/files\/12_c1b899d2-b342-4f5a-a85d-6b2be82b72a8.jpg?v=1773993568","url":"https:\/\/www.jslook.com\/products\/nox-sensor-8w0907807a-8w0907807g-5wk97259-audi-a4-a5-b9-diesel-scr-system","provider":"ASHENG","version":"1.0","type":"link"}