{"product_id":"bosch-13257-oxygen-sensor","title":"Bosch 13257 Oxygen Sensor - Downstream Left or Downstream Right","description":"\u003ch2\u003eReliable Oxygen Sensor for Nissan Pathfinder and Infiniti QX4\u003c\/h2\u003e\u003cp\u003eThe Bosch Actual OE Oxygen Sensor 13257 is designed specifically for Nissan Pathfinder and Infiniti QX4 models. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to your vehicle's engine management system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Bosch, Part Number: 13257\u003c\/li\u003e\n\u003cli\u003eSpecific fit for Nissan Pathfinder and Infiniti QX4\u003c\/li\u003e\n\u003cli\u003eNarrow-band heated oxygen sensor with 4-wire design\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18 mm thread diameter and 22 mm hex size\u003c\/li\u003e\n\u003cli\u003eWiring harness length: 47.1 inches with included harness and male square connector\u003c\/li\u003e\n\u003cli\u003eDurable metal housing finished in steel\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Bosch Actual OE Oxygen Sensor Line\u003c\/h2\u003e\u003cp\u003eThe Bosch Actual OE Oxygen Sensor product line focuses on delivering direct-fit replacement sensors that meet original equipment specifications. This ensures compatibility and performance consistency for vehicles like the Nissan Pathfinder and Infiniti QX4. The 13257 sensor is engineered to provide accurate readings and maintain emissions compliance, supporting the vehicle’s fuel efficiency and engine health.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis Bosch oxygen sensor features a narrow-band heated design with four terminals and wires, allowing for quick warm-up and precise measurement of exhaust oxygen levels. The sensor’s threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation. The wiring harness, measuring 47.1 inches, includes a male square connector with blade terminals, ensuring a secure and reliable electrical connection. Constructed with a metal housing finished in steel, this sensor is built to withstand harsh engine conditions. The overall length of 50.8 inches and sealing surface to connector length of 49.6 inches provide ample reach for proper fitment in the specified vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Oxygen Sensor\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light triggered by faulty oxygen sensor readings\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy due to incorrect air-fuel mixture\u003c\/li\u003e\n\u003cli\u003eIncreased emissions and failed emissions tests\u003c\/li\u003e\n\u003cli\u003eEngine hesitation or rough idling caused by sensor malfunction\u003c\/li\u003e\n\u003cli\u003eReduced engine performance and drivability issues\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the engine is cool before removing the old oxygen sensor to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match your vehicle’s specifications. The threaded mounting type requires proper torque to avoid leaks but avoid overtightening. Since this sensor is a specific fit for Nissan Pathfinder and Infiniti QX4 models, confirm compatibility with your vehicle’s year and engine type before installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eBosch oxygen sensors are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The Actual OE Oxygen Sensor line undergoes rigorous testing to ensure accurate sensor output and long service life. While specific warranty details may vary, Bosch typically offers a limited warranty covering defects in materials and workmanship for this part number 13257.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":44519280804021,"sku":"BBHK-13257","price":64.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_13257_Fro.jpg?v=1775059296","url":"https:\/\/www.partcatalog.com\/products\/bosch-13257-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}