{"product_id":"walker-285-1012-nitrogen-oxide-nox-sensor-downstream","title":"Walker 285-1012 Nitrogen Oxide (NOx) Sensor - Downstream","description":"\u003ch2\u003eOE-Style NOx Sensor Replacement\u003c\/h2\u003e\u003cp\u003eWalker Genuine OE NOx Sensor 285-1012 is a specific-fit emission sensor for diesel and gasoline aftertreatment systems. It is built for accurate nitrogen oxide monitoring in SCR-equipped applications and uses OE-style connectors and harness lengths for straightforward replacement.\u003c\/p\u003e\u003cp\u003eFits 2020-2022 Chevrolet Silverado 1500, downstream. Fits 2022 Chevrolet Silverado 1500 LTD, downstream. Fits 2020-2022 GMC Sierra 1500, downstream. Fits 2022 GMC Sierra 1500 Limited, downstream.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGenuine OE line from Walker for emission system service.\u003c\/li\u003e\n\u003cli\u003eSpecific-fit design for direct replacement applications.\u003c\/li\u003e\n\u003cli\u003eBlack matte housing with oblong connector shape.\u003c\/li\u003e\n\u003cli\u003e6-terminal blade-pin connection with female connector and male terminals.\u003c\/li\u003e\n\u003cli\u003eBuilt for SCR system NOx measurement and exhaust environment durability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003ePart number 285-1012 is a Walker NOx sensor engineered to monitor nitrogen oxide levels so the aftertreatment system can manage emissions accurately. In SCR systems, precise NOx feedback supports proper operation of related components and helps maintain efficient engine performance. The Genuine OE line reflects Walker’s focus on OE-level materials, manufacturing standards, and plug-and-play serviceability.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNOx sensor fault codes related to exhaust aftertreatment monitoring.\u003c\/li\u003e\n\u003cli\u003eIncorrect emissions feedback in SCR-equipped systems.\u003c\/li\u003e\n\u003cli\u003eReduced emission-control performance from a failed sensor.\u003c\/li\u003e\n\u003cli\u003eService issues caused by worn connectors or harness mismatch.\u003c\/li\u003e\n\u003cli\u003eReplacement needs for downstream sensor locations on supported trucks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eUse the OE connector and harness layout to match the original sensor configuration before installation. Confirm downstream placement and connector style against the removed part, and inspect the exhaust-side wiring for heat or corrosion damage during service.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Products states that this Genuine OE sensor is manufactured to OE-level standards and tested for demanding heat, vibration, and corrosive exhaust conditions.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":53627842527413,"sku":"DKHD-285-1012","price":184.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_2851012_FRO.jpg?v=1793256914","url":"https:\/\/www.partcatalog.com\/products\/walker-285-1012-nitrogen-oxide-nox-sensor-downstream","provider":"PartCatalog","version":"1.0","type":"link"}