{"product_id":"bosch-13231-oxygen-sensor","title":"Bosch 13231 Oxygen Sensor - Upstream","description":"\u003ch2\u003eOverview of Bosch Actual OE Oxygen Sensor 13231\u003c\/h2\u003e\u003cp\u003eThe Bosch Actual OE Oxygen Sensor 13231 is designed specifically for select BMW models, including the 318i, 325i, 530i, and M3. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with BMW models such as 318i, 318is, 325i, 530i, 740i, and M3\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 a 4-wire harness with a female round connector\u003c\/li\u003e\n\u003cli\u003eOverall length of 22.4 inches with an 18.7-inch wiring harness\u003c\/li\u003e\n\u003cli\u003eConstructed with durable metal housing finished in steel\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for reliable emissions control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Bosch Actual OE Oxygen Sensor 13231 is engineered as a specific fit replacement part for various BMW vehicles, including the 318ti, 325is, 540i, 740iL, 850CSi, and others. This sensor features a narrow-band heated design, which allows it to reach operating temperature quickly, providing accurate oxygen level readings to the engine control unit. The sensor’s metal housing and threaded mounting ensure a secure and durable installation. The 4-wire configuration with a female round connector and pin terminal type supports reliable electrical connections. With an overall length of 22.4 inches and a wiring harness length of 18.7 inches, this sensor is designed to fit precisely without modification.\u003c\/p\u003e\u003ch2\u003eApplications and Common Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper air-fuel ratio monitoring for BMW 318i and 325i models\u003c\/li\u003e\n\u003cli\u003eResolves engine performance issues related to faulty oxygen sensors\u003c\/li\u003e\n\u003cli\u003eHelps reduce emissions and pass state inspections\u003c\/li\u003e\n\u003cli\u003eEliminates rough idling and poor fuel economy caused by sensor failure\u003c\/li\u003e\n\u003cli\u003ePrevents check engine light triggers related to oxygen sensor faults\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the vehicle is cool before removing the old sensor to avoid burns\u003c\/li\u003e\n\u003cli\u003eUse a 22 mm oxygen sensor socket for removal and installation\u003c\/li\u003e\n\u003cli\u003eDo not overtighten; torque to manufacturer specifications for the 18 mm thread\u003c\/li\u003e\n\u003cli\u003eVerify connector compatibility with the female round connector and 4-wire harness\u003c\/li\u003e\n\u003cli\u003eInspect wiring harness for damage before installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Bosch Actual OE Oxygen Sensor 13231 is manufactured to meet OEM specifications for fit, form, and function. Bosch’s standard replacement grade ensures consistent performance and durability. This oxygen sensor is backed by Bosch’s quality standards, providing confidence in its reliability for emissions control and engine management. Warranty details should be confirmed with the point of purchase or Bosch directly.\u003c\/p\u003e\u003ch2\u003eAbout Bosch Actual OE Oxygen Sensor Product Line\u003c\/h2\u003e\u003cp\u003eThe Bosch Actual OE Oxygen Sensor product line is designed to provide direct-fit replacement sensors that meet original equipment specifications. This line focuses on delivering precise sensor performance and durability for specific vehicle applications. The 13231 sensor exemplifies this approach by offering a heated narrow-band sensor tailored for BMW models, ensuring compatibility and reliable emissions monitoring without the need for modifications.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":44519280672949,"sku":"BBHK-13231","price":84.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_13231_Fro.jpg?v=1775059295","url":"https:\/\/www.partcatalog.com\/products\/bosch-13231-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}