{"product_id":"bosch-15951-oxygen-sensor-upstream","title":"Bosch 15951 Oxygen Sensor - Upstream","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eBosch 15951 is a specific-fit, heated narrow-band oxygen sensor for emission control applications. It provides air-fuel-ratio feedback to the ECU for stable combustion control and lower emissions. Fits 2001 Nissan Altima, upstream, from 12\/2000.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eActual OE Oxygen Sensor line from Bosch\u003c\/li\u003e\n\u003cli\u003eHeated narrow-band design for quicker closed-loop operation\u003c\/li\u003e\n\u003cli\u003eThreaded mounting with 18 mm thread size and 22 mm hex\u003c\/li\u003e\n\u003cli\u003eBlade terminals, oblong connector, and included wiring harness\u003c\/li\u003e\n\u003cli\u003eMetal housing with high-temperature-resistant construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eBosch 15951 is built as a standard replacement oxygen sensor for precise exhaust feedback in emission control systems. The narrow-band heated design uses advanced ceramic elements and optimized heater control to improve light-off response and maintain accurate lambda measurement under thermal and vibration stress. This makes it a direct-fit choice for the 2001 Nissan Altima upstream application listed here. Bosch 15951 also cross-references 226905S511 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIncorrect air-fuel ratio readings sent to the ECU\u003c\/li\u003e\n\u003cli\u003eDelayed closed-loop fuel control after startup\u003c\/li\u003e\n\u003cli\u003eEmission-related drivability faults tied to sensor degradation\u003c\/li\u003e\n\u003cli\u003eSignal instability caused by heat and vibration exposure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the threaded mounting style, 18 mm thread size, 22 mm hex, and connector configuration before installation. This sensor is specific fit and listed for the upstream position on the 2001 Nissan Altima from 12\/2000. Match the harness length and connector shape to the original sensor layout.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBosch draws on more than five decades of OE oxygen sensor development, and the Actual OE Oxygen Sensor line reflects that OE-focused engineering approach.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":53260864651445,"sku":"BBHK-15951","price":91.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_15951_Fro.jpg?v=1789278652","url":"https:\/\/www.partcatalog.com\/products\/bosch-15951-oxygen-sensor-upstream","provider":"PartCatalog","version":"1.0","type":"link"}