Bosch 15445 Oxygen Sensor - Downstream Left

Overview of Bosch Actual OE Oxygen Sensor 15445

The Bosch Actual OE Oxygen Sensor 15445 is designed specifically for the Infiniti QX4, ensuring precise fitment and reliable performance. This narrow-band heated oxygen sensor helps maintain optimal engine efficiency and emission control by accurately monitoring exhaust gases.

• Specific fit for Infiniti QX4 models
• Heated narrow-band oxygen sensor for accurate readings
• Threaded mounting type with 18 mm thread diameter
• 45.1-inch wiring harness length with 4-wire blade terminals
• Durable metal housing with steel finish
• Connector features a square shape with male terminals
• Includes wiring harness for direct replacement
• Standard replacement grade for dependable operation

Detailed Features and Specifications

This Bosch oxygen sensor (part number 15445) is engineered with a 22 mm hex size for easy installation and removal. The sensor is a narrow-band type, heated to provide faster response times and improved fuel management. It includes a 45.1-inch wiring harness with four wires and blade terminals, ensuring secure electrical connections. The connector is male with a square shape, matching the original equipment specifications for the Infiniti QX4. The sensor’s metal housing and steel finish provide durability against harsh engine conditions. The threaded mounting type with an 18 mm thread diameter allows for a precise and secure fit without the need for additional mounting brackets.

About the Bosch Actual OE Oxygen Sensor Product Line

The Bosch Actual OE Oxygen Sensor line is designed to meet or exceed original equipment standards, providing a direct replacement for factory-installed sensors. This product line focuses on delivering reliable emission control components that maintain vehicle performance and comply with environmental regulations. The 15445 sensor is part of this line, ensuring compatibility and quality for Infiniti QX4 owners seeking a standard replacement oxygen sensor.

Common Applications and Problem Resolution

• Restores accurate air-fuel mixture readings for improved engine performance
• Helps resolve check engine light issues related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports smooth acceleration and engine responsiveness

Installation Notes and Tips

When installing the Bosch 15445 oxygen sensor on an Infiniti QX4, ensure the engine is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match the vehicle’s original sensor to avoid electrical issues. No mounting bracket is included, as the sensor mounts directly via its threaded design. Proper torque specifications should be followed to prevent damage to the sensor or exhaust components.

Quality Assurance and Warranty

Bosch oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The Actual OE Oxygen Sensor 15445 is manufactured with high-quality materials, including a metal housing and heated sensor element, to ensure long service life. While specific warranty details are not provided here, Bosch typically offers coverage consistent with industry standards for emission control components.