{"product_id":"pair-nox-sensors-vauxhall-insignia-zafira-tourer-2-0-cdti-55487663-55495340","title":"Pair of NOx Nitrogen Oxide Sensors for Vauxhall\/Opel Insignia A \u0026 Zafira Tourer 2.0 CDTi","description":"\u003cp\u003eThe \u003cstrong data-start=\"32\" data-end=\"98\"\u003ePair of NOx (Nitrogen Oxide) Sensors – OEM 55487663 \u0026amp; 55495340\u003c\/strong\u003e is a complete \u003cstrong data-start=\"113\" data-end=\"145\"\u003eemissions control sensor set\u003c\/strong\u003e specifically designed for \u003cstrong data-start=\"172\" data-end=\"200\"\u003eVauxhall\/Opel Insignia B\u003c\/strong\u003e and \u003cstrong data-start=\"205\" data-end=\"224\"\u003eZafira Tourer C\u003c\/strong\u003e vehicles equipped with the \u003cstrong data-start=\"252\" data-end=\"271\"\u003e2.0 CDTi diesel\u003c\/strong\u003e engine. These NOx sensors measure nitrogen oxide levels in the exhaust gases at two key positions — \u003cstrong data-start=\"372\" data-end=\"439\"\u003ebefore and after the Selective Catalytic Reduction (SCR) system\u003c\/strong\u003e — and relay this data to the vehicle’s engine control unit (ECU). Using both sensors helps the ECU \u003cstrong data-start=\"539\" data-end=\"596\"\u003eoptimise AdBlue dosing, improve combustion efficiency\u003c\/strong\u003e, and ensure compliance with emissions regulations while maintaining engine performance and reducing harmful pollutants. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Number: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTVAU55598161 - Front, Position 1, Pre Cat, Before SCR Catalytic Converter\u003c\/p\u003e\n\u003cp\u003e5WK97227, 0899203, 55512348, 55 512 348, 8 55 599, 855599\u003cbr\u003e55598161, ANS1019-12B1, 70680409, 69007, 710870M, 0899203\u003cbr\u003eNOX1K002, 2203220039 01, 220322003901, LW8161S\u003cbr\u003e241902710, DN14040414, 9 3517 1, 935171, 70680409\u003cbr\u003e69007, LNX010, LSN008, 0899203, 0940002, V40-72-0054\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eTVAU55598169 - REar, Position 2, After SCR Catalytic Converter\u003c\/p\u003e\n\u003cp\u003e70880, NOX1K001, 9 3518 1, OP980450, 70680410, 69006, LNX009\u003cbr\u003e0899204, 55598169, 8 55 601, 855601, 5WK97228, 220322003901\u003cbr\u003e70680410, 0899204, 70880, 55598169, 855601, ANS1015-12B1\u003cbr\u003e2203220039 01, 5WK9 7228, 2211180025 01, 221118002501\u003cbr\u003eLW8169S , 9 3518 1, 935181, OP980450, LSN007\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlacement on Vehicle:\u003c\/strong\u003e Before SCR Catalytic Converter \u0026amp; After SCR Catalytic Converter\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitting Position: \u003c\/strong\u003eFront, Rear, Position 1, Position 2, Pre Cat, Post Cat, BOTH SIDES\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThread Size:\u003c\/strong\u003e M20 x 1.5\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNumber of Pins:\u003c\/strong\u003e 6 Pin Connector\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpanner Size:\u003c\/strong\u003e 22\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConnector Shape:\u003c\/strong\u003e Rectangular\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCable Length:\u003c\/strong\u003e 590 mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Mode: \u003c\/strong\u003eElectric\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 V\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuantity:\u003c\/strong\u003e Pair\u003cbr\u003e\u003c\/p\u003e\n\u003ctable id=\"example\" class=\"display responsive nowrap\" style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOpel\u003c\/th\u003e\n\u003cth\u003eInsignia A Country Tourer\u003c\/th\u003e\n\u003cth\u003eDiesel Estate\u003c\/th\u003e\n\u003cth\u003e2.0 CDTI 4x4\u003c\/th\u003e\n\u003cth\u003e1956cc 125KW 170HP B 20 DTH\u003c\/th\u003e\n\u003cth\u003eAWD A G09\u003c\/th\u003e\n\u003cth\u003e2014-2017\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpel\u003c\/th\u003e\n\u003cth\u003eZafira Tourer\u003c\/th\u003e\n\u003cth\u003eDiesel MPV\u003c\/th\u003e\n\u003cth\u003e2.0 CDTi\u003c\/th\u003e\n\u003cth\u003e1956cc 125KW 170HP B 20 DTH;D 20 DTH\u003c\/th\u003e\n\u003cth\u003eFWD C P12\u003c\/th\u003e\n\u003cth\u003e2015-2020\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpel\u003c\/th\u003e\n\u003cth\u003eZafira Tourer\u003c\/th\u003e\n\u003cth\u003eDiesel MPV\u003c\/th\u003e\n\u003cth\u003e2.0 CDTi\u003c\/th\u003e\n\u003cth\u003e1956cc 96KW 130HP A 20 DT;B 20 DTJ;D 20 DTJ;Y 20 DTJ;Z 20 DTJ\u003c\/th\u003e\n\u003cth\u003eFWD C P12\u003c\/th\u003e\n\u003cth\u003e2011-2020\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVauxhall\u003c\/th\u003e\n\u003cth\u003eInsignia\u003c\/th\u003e\n\u003cth\u003eDiesel Estate\u003c\/th\u003e\n\u003cth\u003e2.0 CDTI\u003c\/th\u003e\n\u003cth\u003e1956cc 125KW 170HP B 20 DTH\u003c\/th\u003e\n\u003cth\u003eFWD Mk I (A) G09\u003c\/th\u003e\n\u003cth\u003e2014-2017\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVauxhall\u003c\/th\u003e\n\u003cth\u003eInsignia\u003c\/th\u003e\n\u003cth\u003eDiesel Estate\u003c\/th\u003e\n\u003cth\u003e2.0 CDTI 4x4\u003c\/th\u003e\n\u003cth\u003e1956cc 125KW 170HP B 20 DTH\u003c\/th\u003e\n\u003cth\u003eAWD Mk I (A) G09\u003c\/th\u003e\n\u003cth\u003e2014-2017\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVauxhall\u003c\/th\u003e\n\u003cth\u003eZafira\u003c\/th\u003e\n\u003cth\u003eDiesel MPV\u003c\/th\u003e\n\u003cth\u003e2.0 CDTi\u003c\/th\u003e\n\u003cth\u003e1956cc 125KW 170HP B 20 DTH\u003c\/th\u003e\n\u003cth\u003eFWD Mk III P12\u003c\/th\u003e\n\u003cth\u003e2015-2018\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003ctfoot\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/tfoot\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eOur SKU :\u003c\/strong\u003e TVAU55598169-8161PAIR_94\u003cbr\u003e\u003cbr\u003eAll our NOX SENSOR NITROGEN OXIDE SENSORS (PAIR) FOR are OEM quality and reliable after-market car parts. This Nox Sensor Nitrogen Oxide Sensors (Pair) \u003cspan\u003eis specifically compatible with Opel: Insignia A Country Tourer, Zafira Tourer, Vauxhall: Insignia, Zafira.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003ePlease use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eIf you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing \u0026amp; shipping guide here.\u003c\/p\u003e\n\u003ch2 data-start=\"761\" data-end=\"782\"\u003e\u003cstrong data-start=\"766\" data-end=\"782\"\u003eKey Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"784\" data-end=\"2190\"\u003e\n\u003cli data-start=\"784\" data-end=\"1080\"\u003e\n\u003cp data-start=\"786\" data-end=\"1080\"\u003e\u003cstrong data-start=\"786\" data-end=\"810\"\u003eOEM-Referenced Pair:\u003c\/strong\u003e Supplied as a \u003cstrong data-start=\"825\" data-end=\"847\"\u003ematched sensor set\u003c\/strong\u003e covering both NOx positions (pre-SCR and post-SCR), built to fit vehicles originally equipped with \u003cstrong data-start=\"947\" data-end=\"986\"\u003eOE part numbers 55487663 \u0026amp; 55495340\u003c\/strong\u003e — ensuring correct function and wiring compatibility. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1081\" data-end=\"1363\"\u003e\n\u003cp data-start=\"1083\" data-end=\"1363\"\u003e\u003cstrong data-start=\"1083\" data-end=\"1114\"\u003eEnhanced Emissions Control:\u003c\/strong\u003e By providing accurate readings of nitrogen oxide in exhaust gases, these sensors help the ECU fine-tune SCR and combustion strategies, reducing harmful \u003cstrong data-start=\"1267\" data-end=\"1284\"\u003eNOx emissions\u003c\/strong\u003e and supporting cleaner exhaust output. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1364\" data-end=\"1653\"\u003e\n\u003cp data-start=\"1366\" data-end=\"1653\"\u003e\u003cstrong data-start=\"1366\" data-end=\"1404\"\u003eRestores Engine \u0026amp; ECU Performance:\u003c\/strong\u003e Faulty or degraded NOx sensors can trigger \u003cstrong data-start=\"1448\" data-end=\"1515\"\u003ewarning lights, reduced power modes, inefficiencies in fuel use\u003c\/strong\u003e and trouble codes related to SCR performance — replacing them with a pair addresses these issues. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1654\" data-end=\"1899\"\u003e\n\u003cp data-start=\"1656\" data-end=\"1899\"\u003e\u003cstrong data-start=\"1656\" data-end=\"1694\"\u003eDurable Diesel-Grade Construction:\u003c\/strong\u003e Designed to withstand \u003cstrong data-start=\"1717\" data-end=\"1780\"\u003ehigh heat, corrosive exhaust environments and long-term use\u003c\/strong\u003e, ensuring reliable performance over extended distances and driving conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1900\" data-end=\"2190\"\u003e\n\u003cp data-start=\"1902\" data-end=\"2190\"\u003e\u003cstrong data-start=\"1902\" data-end=\"1942\"\u003eWide Compatibility on Diesel Models:\u003c\/strong\u003e Ideal for \u003cstrong data-start=\"1953\" data-end=\"2007\"\u003eVauxhall\/Opel Insignia B (Z18) and Zafira Tourer C\u003c\/strong\u003e models with the \u003cstrong data-start=\"2024\" data-end=\"2050\"\u003e2.0 CDTi diesel engine\u003c\/strong\u003e (e.g., B20DTH \/ D20DTH variants) — check your exact engine and old sensor numbers to confirm fitment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2197\" data-end=\"2239\"\u003e\u003cstrong data-start=\"2202\" data-end=\"2239\"\u003eFrequently Asked Questions (FAQs)\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2241\" data-end=\"2535\"\u003e\u003cstrong data-start=\"2241\" data-end=\"2275\"\u003eQ1: What does a NOx sensor do?\u003c\/strong\u003e\u003cbr data-start=\"2275\" data-end=\"2278\"\u003eA NOx (Nitrogen Oxide) sensor measures levels of nitrogen oxides in the exhaust and sends that data to the ECU, which uses it to regulate the \u003cstrong data-start=\"2420\" data-end=\"2459\"\u003eSCR (Selective Catalytic Reduction)\u003c\/strong\u003e system and improve emissions control. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2537\" data-end=\"2841\"\u003e\u003cstrong data-start=\"2537\" data-end=\"2589\"\u003eQ2: Why does this product include \u003cem data-start=\"2573\" data-end=\"2578\"\u003etwo\u003c\/em\u003e sensors?\u003c\/strong\u003e\u003cbr data-start=\"2589\" data-end=\"2592\"\u003eDiesel vehicles equipped with SCR typically use \u003cstrong data-start=\"2640\" data-end=\"2659\"\u003etwo NOx sensors\u003c\/strong\u003e — one \u003cstrong data-start=\"2666\" data-end=\"2676\"\u003ebefore\u003c\/strong\u003e and one \u003cstrong data-start=\"2685\" data-end=\"2694\"\u003eafter\u003c\/strong\u003e the SCR catalyst. This dual setup lets the ECU monitor how effectively the SCR system reduces NOx emissions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2843\" data-end=\"3203\"\u003e\u003cstrong data-start=\"2843\" data-end=\"2900\"\u003eQ3: Which vehicles are these sensors compatible with?\u003c\/strong\u003e\u003cbr data-start=\"2900\" data-end=\"2903\"\u003eThis NOx sensor pair fits \u003cstrong data-start=\"2929\" data-end=\"2963\"\u003eVauxhall\/Opel Insignia B (Z18)\u003c\/strong\u003e and \u003cstrong data-start=\"2968\" data-end=\"2987\"\u003eZafira Tourer C\u003c\/strong\u003e 2.0 CDTi diesel models. They are most common on cars from about \u003cstrong data-start=\"3052\" data-end=\"3068\"\u003e2017 onwards\u003c\/strong\u003e with 2.0 litre CDTi engines — verifying your \u003cstrong data-start=\"3114\" data-end=\"3149\"\u003eold part number and engine code\u003c\/strong\u003e is recommended. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3205\" data-end=\"3529\"\u003e\u003cstrong data-start=\"3205\" data-end=\"3256\"\u003eQ4: What are signs the NOx sensors are failing?\u003c\/strong\u003e\u003cbr data-start=\"3256\" data-end=\"3259\"\u003eTypical symptoms include the \u003cstrong data-start=\"3288\" data-end=\"3331\"\u003echeck engine or emissions warning light\u003c\/strong\u003e, \u003cstrong data-start=\"3333\" data-end=\"3356\"\u003ereduced performance\u003c\/strong\u003e, \u003cstrong data-start=\"3358\" data-end=\"3379\"\u003epoor fuel economy\u003c\/strong\u003e, failed emissions tests or SCR-related fault codes — often due to incorrect NOx readings or sensor degradation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3531\" data-end=\"3789\"\u003e\u003cstrong data-start=\"3531\" data-end=\"3575\"\u003eQ5: Is replacing both sensors necessary?\u003c\/strong\u003e\u003cbr data-start=\"3575\" data-end=\"3578\"\u003eYes — replacing both sensors together ensures the emissions system works correctly and avoids imbalance in readings that can compromise SCR function or trigger ECU errors.\u003c\/p\u003e","brand":"globalcarpart.com","offers":[{"title":"Default Title","offer_id":56513287586169,"sku":"TVAU55598169-8161PAIR_94","price":299.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/4740\/1441\/files\/TVAU55598169-8161PAIR_1.jpg?v=1768639133","url":"https:\/\/www.globalcarpart.com\/products\/pair-nox-sensors-vauxhall-insignia-zafira-tourer-2-0-cdti-55487663-55495340","provider":"globalcarpart.com","version":"1.0","type":"link"}