{"product_id":"bosch-18121-oxygen-sensor","title":"Bosch 18121 Oxygen Sensor - Upstream","description":"\u003ch2\u003eReliable Oxygen Sensor for Land Rover Vehicles\u003c\/h2\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor 18121 is designed specifically for Land Rover models including the LR4, Range Rover, and Range Rover Sport. This wide-band oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions control.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster response times\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Land Rover LR4, Range Rover, and Range Rover Sport\u003c\/li\u003e\n\u003cli\u003e4-wire design with blade terminals and rectangular male connector\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18 mm thread diameter and 22 mm hex size\u003c\/li\u003e\n\u003cli\u003eDurable metal housing with steel finish and 6.6-inch wiring harness length\u003c\/li\u003e\n\u003cli\u003eIncludes wiring harness for direct replacement installation\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for emission control sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Bosch Validated Oxygen Sensor Line\u003c\/h2\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor product line focuses on providing reliable, vehicle-specific oxygen sensors that meet OEM standards. These sensors undergo rigorous validation to ensure compatibility and performance for precise emission control. The 18121 sensor is part of this line, offering a direct fit solution for select Land Rover models with a heated wide-band sensor design.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis Bosch oxygen sensor 18121 features a heated element to reduce warm-up time, enabling quicker sensor response and improved fuel management. The sensor’s 4-wire configuration includes blade terminals and a rectangular male connector, ensuring secure electrical connections. Its threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation. The metal housing with a steel finish provides durability under harsh engine conditions. With an overall length of 10 inches and a wiring harness length of 6.6 inches, this sensor fits precisely in the exhaust system of Land Rover LR4, Range Rover, and Range Rover Sport models.\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 efficiency\u003c\/li\u003e\n\u003cli\u003eResolves check engine light triggers related to oxygen sensor faults\u003c\/li\u003e\n\u003cli\u003eHelps reduce vehicle emissions by ensuring proper catalytic converter function\u003c\/li\u003e\n\u003cli\u003eCorrects poor fuel economy caused by faulty sensor signals\u003c\/li\u003e\n\u003cli\u003eEliminates rough idling or engine hesitation linked to oxygen sensor failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Bosch 18121 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match the vehicle’s factory setup. Avoid over-tightening the threaded sensor to prevent damage. Since this is a specific fit sensor, confirm compatibility with Land Rover LR4, Range Rover, or Range Rover Sport before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor 18121 is manufactured to meet OEM specifications for durability and performance. Bosch provides a standard replacement grade sensor backed by quality control processes. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship to ensure reliable operation in emission control systems.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":44520675344565,"sku":"BBHK-18121","price":226.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_18121_Fro.jpg?v=1775059574","url":"https:\/\/www.partcatalog.com\/products\/bosch-18121-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}