{"product_id":"ntk-21078-oxygen-sensor-downstream","title":"NTK 21078 Oxygen Sensor - Downstream","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor\u003c\/h2\u003e\u003cp\u003eNTK 21078 is a direct-fit oxygen sensor built for specific applications and engineered for OE-style fit, form, and function. It uses a heated, threaded design with a 4-wire configuration and a 17.25-inch harness for a precise replacement setup.\u003c\/p\u003e\u003cp\u003eCompatible with Buick Verano applications, this NTK oxygen sensor is part of the Direct Fit Oxygen Sensor line, which focuses on streamlined coverage and application-specific replacement parts. The part number 21078 is also referenced for the same application as DENSO Auto Parts 234-4975.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit replacement for specific emission control applications\u003c\/li\u003e\n\u003cli\u003eHeated oxygen sensor design for faster operating readiness\u003c\/li\u003e\n\u003cli\u003eThreaded mounting with 18.000 thread diameter\u003c\/li\u003e\n\u003cli\u003e4-wire configuration with 17.25-inch wiring harness\u003c\/li\u003e\n\u003cli\u003eOE-focused fit, form, and function from NTK\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNTK 21078 is an oxygen sensor for downstream use on 2015-2017 Buick Verano models. It is built as a specific-fit replacement with a threaded mounting type and heated sensor construction, making it a direct match for the listed application. The NTK 21078 part number is associated with OE-level application coverage and is manufactured under NTK's sensor-focused product line.\u003c\/p\u003e\u003cp\u003eNTK draws on its ceramics expertise and OE sensor manufacturing background to produce oxygen sensors that are extensively tested during manufacturing. For buyers searching for a 2015 Buick Verano downstream oxygen sensor, a 2016 Buick Verano downstream oxygen sensor, or a 2017 Buick Verano downstream oxygen sensor, this part provides the specified fitment and configuration.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a failed downstream oxygen sensor\u003c\/li\u003e\n\u003cli\u003eRestoring proper exhaust gas feedback to the engine control system\u003c\/li\u003e\n\u003cli\u003eAddressing sensor-related fault codes or emissions warnings\u003c\/li\u003e\n\u003cli\u003eCorrecting drivability issues tied to inaccurate oxygen sensor readings\u003c\/li\u003e\n\u003cli\u003eReplacing a sensor with the correct threaded, heated configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the downstream location and connector configuration before installation. Confirm thread diameter, harness length, and wire count against the removed sensor to ensure the correct match. Use the listed fitment for 2015-2017 Buick Verano applications and confirm the part number 21078 before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of the NGK family of products and is recognized as a major OE oxygen sensor supplier.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":53731382231221,"sku":"BFPZ-21078","price":61.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_21078_Fro.jpg?v=1794294336","url":"https:\/\/www.partcatalog.com\/products\/ntk-21078-oxygen-sensor-downstream","provider":"PartCatalog","version":"1.0","type":"link"}