Bosch 15524 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Nissan and Infiniti Vehicles

The Bosch Validated Oxygen Sensor 15524 is designed specifically for select Nissan and Infiniti models, including the 350Z, FX35, and G35. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance.

• Specific fit for Nissan 350Z, Infiniti FX35, and G35 models
• Heated narrow-band oxygen sensor for precise air-fuel mixture readings
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes 18.6-inch wiring harness with 4 male blade terminals and square connector
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade with universal wiring harness included

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering reliable, vehicle-specific sensors that meet OEM specifications. The 15524 sensor is engineered to provide consistent performance and accurate emissions data, supporting compliance with environmental standards for Nissan and Infiniti vehicles. This line emphasizes precise fitment and quality materials to maintain engine efficiency and reduce harmful emissions.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which allows it to quickly reach operating temperature and provide accurate oxygen level readings. The sensor has a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for installation using standard tools. The wiring harness is 18.6 inches long and includes four wires with male blade terminals and a square-shaped male connector, ensuring a secure and proper connection. The sensor’s metal housing finished in steel offers durability under harsh engine conditions. Overall length measures 22 inches, with a 20.9-inch length from sealing surface to connector end.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine performance
• Helps resolve check engine light codes related to oxygen sensor failure
• Reduces emissions by ensuring proper catalytic converter function
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports compliance with emissions testing requirements for Nissan 350Z, Infiniti FX35, and G35

Installation Notes and Tips

Installation requires a 22 mm wrench or oxygen sensor socket to remove and install the sensor. Ensure the threaded mounting hole is clean and free of debris before installation. The wiring harness included simplifies connection, but verify the connector orientation matches the vehicle’s harness. Avoid over-tightening the sensor to prevent damage to the threads. It is recommended to disconnect the battery before installation to prevent electrical shorts.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15524 is manufactured to meet OEM standards for fit, form, and function. Bosch provides quality assurance through rigorous testing to ensure sensor reliability and durability. While specific warranty details may vary, Bosch typically offers a limited warranty covering defects in materials and workmanship for this product line.