{"product_id":"bosch-18198-oxygen-sensor-upstream","title":"Bosch 18198 Oxygen Sensor - Upstream","description":"\u003ch2\u003eBosch Wideband O2 Sensor for Upstream Control\u003c\/h2\u003e\u003cp\u003eBosch Validated Oxygen Sensor 18198 is a specific-fit, heated wideband air-fuel ratio sensor for precise upstream mixture monitoring. It delivers continuous lambda measurement for accurate fuel control, stable drivability, and lower emissions in the applications listed below.\u003c\/p\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor line reflects Bosch OE development in modern engine management. This wideband A\/F sensor uses a planar pump-cell design, fast light-off behavior, optimized heater control, and a robust ceramic body to maintain accurate readings during rapid load changes and thermal cycling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWideband oxygen sensor for continuous air-fuel ratio measurement\u003c\/li\u003e\n\u003cli\u003eHeated design for faster sensor activation\u003c\/li\u003e\n\u003cli\u003eSpecific-fit replacement with 5-wire configuration\u003c\/li\u003e\n\u003cli\u003eThreaded mounting with 18 mm thread diameter and 22 mm hex size\u003c\/li\u003e\n\u003cli\u003eFemale connector and female terminals with included wiring harness\u003c\/li\u003e\n\u003cli\u003eOverall length: 17.9 in; harness length: 14.4 in\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for OE-style service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2021-2025 Lincoln Corsair, Upstream.\u003c\/li\u003e\n\u003cli\u003eFits 2019-2024 Ford Edge, Upstream.\u003c\/li\u003e\n\u003cli\u003eFits 2022-2023 Lincoln Nautilus, Upstream.\u003c\/li\u003e\n\u003cli\u003eFits 2020-2022 Ford Escape, Upstream.\u003c\/li\u003e\n\u003cli\u003eFits 2017-2019 Ford Escape, Upstream.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse Bosch 18198 when replacing an upstream wideband sensor on a Ford Edge, Ford Escape, Lincoln Corsair, or Lincoln Nautilus with the listed model years. This part cross-references Ford\/Lincoln OE numbers GJ5Z9F472B and K2GZ9F472B for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Sensor Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFault codes related to air-fuel ratio or oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003eRough idle caused by inaccurate upstream mixture feedback\u003c\/li\u003e\n\u003cli\u003eReduced fuel economy from poor fuel-trim control\u003c\/li\u003e\n\u003cli\u003eDelayed sensor response during cold start or load changes\u003c\/li\u003e\n\u003cli\u003eEmissions test failures tied to incorrect mixture readings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eInstall this sensor in the upstream position only for the listed applications. Verify the 5-wire connector style, 18 mm thread size, and oblong female connector before installation. Because this is a specific-fit sensor with an included harness, match the connector routing and sensor location to the original part on the vehicle.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBosch has more than five decades of OE sensor development behind this oxygen sensor line, and the design reflects the same engineering approach used in modern factory engine-management systems. Bosch 18198 is built as a standard replacement part for accurate upstream air-fuel ratio control.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52999973535925,"sku":"BBHK-18198","price":163.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_18198_Fro.jpg?v=1787202887","url":"https:\/\/www.partcatalog.com\/products\/bosch-18198-oxygen-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}