{"product_id":"walker-285-1122-nitrogen-oxide-nox-sensor-downstream","title":"Walker 285-1122 Nitrogen Oxide (NOx) Sensor - Downstream","description":"\u003ch2\u003eWalker Genuine OE NOx Sensor for Nissan TITAN XD\u003c\/h2\u003e\u003cp\u003eWalker Genuine OE Part Number 285-1122 is a nitrogen oxide (NOx) sensor built for diesel and gasoline emission systems that rely on accurate exhaust monitoring. It is a direct-fit solution for 2016-2019 Nissan TITAN XD downstream applications and is engineered for OE-style performance, connector fit, and harness length.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGenuine OE NOx sensor for selective catalytic reduction (SCR) emission systems\u003c\/li\u003e\n\u003cli\u003eFits 2016-2019 Nissan TITAN XD, downstream\u003c\/li\u003e\n\u003cli\u003eWalker part number 285-1122 for direct identification\u003c\/li\u003e\n\u003cli\u003eOE connector and harness length for plug-and-play installation\u003c\/li\u003e\n\u003cli\u003eBlack matte housing with square connector shape\u003c\/li\u003e\n\u003cli\u003e4-terminal design with female connector and male terminals\u003c\/li\u003e\n\u003cli\u003eBuilt by Tier 1 OE suppliers using OE-level materials and manufacturing standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker Products Genuine OE NOx sensors are produced to monitor nitrogen oxide levels in SCR-equipped exhaust systems. Accurate NOx readings are critical for aftertreatment control, helping the vehicle manage emissions, protect components such as diesel particulate filters, and maintain efficient engine operation. This Walker 285-1122 sensor is designed for the downstream position on the Nissan TITAN XD and uses OE-style electrical and physical interfaces for straightforward replacement.\u003c\/p\u003e\u003cp\u003eThe Genuine OE product line focuses on direct replacement parts built with the same precision technology used by leading vehicle manufacturers. For buyers searching for a downstream NOx sensor for 2016-2019 Nissan TITAN XD or a Walker 285-1122 emission sensor replacement, this part provides a factory-style fit and configuration.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Part Addresses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFault codes related to NOx sensor performance\u003c\/li\u003e\n\u003cli\u003eIncorrect exhaust emissions readings in SCR systems\u003c\/li\u003e\n\u003cli\u003eAftertreatment control problems affecting emission system operation\u003c\/li\u003e\n\u003cli\u003eReduced efficiency from a failed downstream NOx sensor\u003c\/li\u003e\n\u003cli\u003eDrivability or emissions compliance issues tied to sensor signal loss\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the downstream sensor location and connector style before installation. Match the OE connector, terminal layout, and harness routing to the original part for proper fitment on the Nissan TITAN XD. This sensor is designed as a direct replacement, so installation should follow the vehicle service procedure for the emission system.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Genuine OE NOx sensors are manufactured to OE-level standards by Tier 1 suppliers and are field-proven in demanding exhaust environments with heat, vibration, and corrosion exposure. Part number 285-1122 is built for dependable emission-system service on the Nissan TITAN XD.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52985193693365,"sku":"DKHD-285-1122","price":282.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_2851122_FRO.jpg?v=1787122400","url":"https:\/\/www.partcatalog.com\/products\/walker-285-1122-nitrogen-oxide-nox-sensor-downstream","provider":"PartCatalog","version":"1.0","type":"link"}