{"product_id":"bosch-13857-oxygen-sensor","title":"Bosch 13857 Oxygen Sensor - Downstream","description":"\u003ch2\u003eOverview of Bosch Validated Oxygen Sensor 13857\u003c\/h2\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor 13857 is designed specifically for Mazda Miata models, providing precise emission control and reliable performance. This narrow-band heated oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal engine efficiency.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Mazda Miata vehicles\u003c\/li\u003e\n\u003cli\u003ePart number 13857 for exact fitment\u003c\/li\u003e\n\u003cli\u003eHeated narrow-band oxygen sensor type\u003c\/li\u003e\n\u003cli\u003eThreaded mounting with 18 mm thread diameter\u003c\/li\u003e\n\u003cli\u003eIncludes 17.1-inch wiring harness with 4 wires and blade terminals\u003c\/li\u003e\n\u003cli\u003eRectangle-shaped male connector with 4 terminals\u003c\/li\u003e\n\u003cli\u003eSteel housing with 22 mm hex size for installation\u003c\/li\u003e\n\u003cli\u003eOverall length of 20.9 inches for proper fit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor 13857 is engineered as a standard replacement part for emission control systems in Mazda Miata vehicles. Featuring a heated narrow-band sensor, it provides accurate oxygen level readings to the engine control unit, enabling precise fuel mixture adjustments. The sensor includes a 17.1-inch wiring harness with four wires and blade-type terminals, ensuring secure electrical connections. Its threaded mounting type with an 18 mm thread diameter and 22 mm hex size allows for straightforward installation. The sensor’s steel housing offers durability and resistance to harsh engine conditions. The connector is a male, rectangle-shaped design with four terminals, matching the original equipment specifications for a specific fit.\u003c\/p\u003e\u003ch2\u003eAbout the Bosch Validated Oxygen Sensor Line\u003c\/h2\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor product line focuses on delivering reliable, vehicle-specific sensors that meet OEM standards. This line is designed to provide accurate emissions data and maintain engine performance by ensuring proper sensor function. The 13857 sensor is part of this line, offering a direct fit and compatibility with Mazda Miata models, which helps maintain emission compliance and engine efficiency.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper air-fuel ratio readings for Mazda Miata engines\u003c\/li\u003e\n\u003cli\u003eResolves check engine light triggers related to oxygen sensor faults\u003c\/li\u003e\n\u003cli\u003eImproves fuel economy by ensuring accurate sensor data\u003c\/li\u003e\n\u003cli\u003eReduces harmful emissions by maintaining correct combustion\u003c\/li\u003e\n\u003cli\u003ePrevents engine performance issues caused by faulty oxygen sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure vehicle compatibility with Mazda Miata models before installation\u003c\/li\u003e\n\u003cli\u003eUse a 22 mm wrench or socket for sensor removal and installation\u003c\/li\u003e\n\u003cli\u003eHandle the sensor carefully to avoid damaging the heated element\u003c\/li\u003e\n\u003cli\u003eVerify connector terminals match the original sensor for proper connection\u003c\/li\u003e\n\u003cli\u003eCheck wiring harness length (17.1 inches) to confirm fit within engine bay\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Bosch Validated Oxygen Sensor 13857 is manufactured to meet strict quality standards, ensuring reliable performance and durability. Bosch sensors undergo rigorous testing to comply with emission control requirements. While specific warranty details are not provided here, Bosch typically offers coverage against manufacturing defects. Refer to Bosch or your parts provider for exact warranty terms.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":44520480637109,"sku":"BBHK-13857","price":164.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_13857_Fro.jpg?v=1775059354","url":"https:\/\/www.partcatalog.com\/products\/bosch-13857-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}