{"product_id":"bosch-18273-oxygen-sensor-upstream-or-upstream-left","title":"Bosch 18273 Oxygen Sensor - Upstream or Upstream Left","description":"\u003ch2\u003eReliable Oxygen Sensor for Cadillac, Chevrolet, and GMC Vehicles\u003c\/h2\u003e\u003cp\u003eThe Bosch OE Quality Oxygen Sensor 18273 is designed to provide precise air-fuel mixture readings for select Cadillac, Chevrolet, and GMC models. This narrow-band heated oxygen sensor ensures accurate emissions control and engine performance for vehicles like the Escalade, Silverado 1500, and Yukon.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpecific fit for Cadillac Escalade, Chevrolet Silverado 1500, GMC Sierra 1500, and more\u003c\/li\u003e\n\u003cli\u003eHeated narrow-band oxygen sensor for improved response time\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18 mm thread diameter and 22 mm hex size\u003c\/li\u003e\n\u003cli\u003eIncludes 11.2-inch wiring harness with 4 male blade terminals and oblong male connector\u003c\/li\u003e\n\u003cli\u003eDurable metal housing finished in steel for long-lasting performance\u003c\/li\u003e\n\u003cli\u003eOverall length of 14.6 inches with 13.4 inches from sealing surface to connector end\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for reliable emissions control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Bosch OE Quality Oxygen Sensor Line\u003c\/h2\u003e\u003cp\u003eThe OE Quality Oxygen Sensor line by Bosch is engineered to meet original equipment specifications, providing a direct replacement for factory-installed sensors. This product line focuses on delivering consistent sensor performance and durability, ensuring compatibility with specific vehicle models and maintaining proper emissions system function.\u003c\/p\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Bosch part number 18273 is a narrow-band heated oxygen sensor designed for specific fitment on various Cadillac, Chevrolet, and GMC vehicles, including Escalade, Escalade ESV, Express 2500\/3500, Savana 2500\/3500, Sierra 1500\/2500 HD\/3500 HD, Silverado 1500\/2500 HD, Tahoe, Yukon, and Yukon XL. The sensor features a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for installation using standard tools. It includes a wiring harness measuring 11.2 inches in length with four wires and blade terminals, connected via an oblong male connector. The sensor housing is made of metal with a steel finish, weighing approximately 0.24 pounds. This heated oxygen sensor helps the engine control module accurately monitor exhaust gases to optimize fuel efficiency and reduce emissions.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores accurate air-fuel ratio readings for improved engine performance\u003c\/li\u003e\n\u003cli\u003eHelps resolve check engine light codes related to oxygen sensor failure\u003c\/li\u003e\n\u003cli\u003eReduces excessive emissions and helps pass state emissions inspections\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by providing precise feedback to the engine control unit\u003c\/li\u003e\n\u003cli\u003ePrevents rough idling and engine hesitation caused by faulty sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Bosch OE Quality Oxygen Sensor 18273, ensure the vehicle is cool to avoid burns. Use a 22 mm oxygen sensor socket or wrench for removal and installation. Verify the sensor’s wiring harness length and connector type match the vehicle’s factory specifications. Avoid over-tightening the sensor to prevent thread damage. This sensor is designed for specific fitment, so confirm compatibility with your Cadillac, Chevrolet, or GMC model before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eBosch OE Quality Oxygen Sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. This part is a standard replacement grade sensor designed to maintain proper emissions control. While specific warranty details are not provided here, Bosch products typically come with a limited warranty covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52215305765045,"sku":"BBHK-18273","price":92.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_18273_Fro.jpg?v=1775596593","url":"https:\/\/www.partcatalog.com\/products\/bosch-18273-oxygen-sensor-upstream-or-upstream-left","provider":"PartCatalog","version":"1.0","type":"link"}