Bosch 15377 Oxygen Sensor - Downstream Right

Reliable Oxygen Sensor for Infiniti QX4 Emission Control

The Bosch Actual OE Oxygen Sensor 15377 is designed specifically for the Infiniti QX4, ensuring precise air-fuel mixture readings for optimal engine performance and emissions control. This narrow-band heated oxygen sensor provides accurate feedback to your vehicle’s engine management system, helping maintain efficient combustion and reduce harmful emissions.

• Compatible with Infiniti QX4 models
• Part number 15377 for exact fit and function
• Heated narrow-band oxygen sensor for fast response
• Threaded mounting type with 18 mm thread diameter
• 32.5-inch wiring harness length with 4-wire blade terminals
• Square male connector with 4 terminals included
• Durable metal housing with steel finish
• Standard replacement grade for reliable performance

About the Bosch Actual OE Oxygen Sensor Product Line

The Bosch Actual OE Oxygen Sensor line is engineered to meet original equipment specifications, providing a direct replacement for factory-installed sensors. This product line focuses on delivering consistent sensor performance and durability, ensuring compatibility and reliable operation in emission control systems. The 15377 sensor maintains the integrity of your Infiniti QX4’s engine management system by accurately monitoring exhaust gases.

Detailed Product Description and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which allows for quicker sensor warm-up and improved accuracy in measuring oxygen levels in the exhaust stream. The sensor includes a 32.5-inch wiring harness with four wires and blade-type terminals, facilitating straightforward installation and secure electrical connections. The sensor’s metal housing and steel finish provide resistance to heat and corrosion, essential for long-term durability in harsh engine environments. The threaded mounting type with an 18 mm diameter and 22 mm hex size ensures a precise fit in the Infiniti QX4’s exhaust system.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for engine control
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by optimizing combustion
• Reduces harmful emissions by maintaining proper sensor feedback
• Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

When installing the Bosch 15377 oxygen sensor on your Infiniti QX4, ensure the engine and exhaust system are cool to avoid burns. Use the correct 22 mm hex socket for sensor removal and installation. Verify the wiring harness length and connector type match your vehicle’s specifications to ensure proper fitment. Avoid over-tightening the sensor to prevent thread damage. It is recommended to inspect the sensor wiring and connector for any signs of wear or corrosion before installation.

Quality Assurance and Warranty Information

Bosch oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The Actual OE Oxygen Sensor 15377 is a standard replacement grade part designed to match OEM specifications. While specific warranty details may vary, Bosch typically offers coverage against manufacturing defects to provide confidence in product reliability.