Bosch 15378 Oxygen Sensor - Downstream Right

Reliable Oxygen Sensor for Infiniti Q45 Emission Control

The Bosch Actual OE Oxygen Sensor 15378 is designed specifically for Infiniti Q45 models, ensuring precise emission control and optimal engine performance. This narrow-band heated oxygen sensor provides accurate air-fuel mixture readings to help maintain efficient combustion and reduce harmful emissions.

• Specific fit for Infiniti Q45 vehicles
• Heated narrow-band oxygen sensor for faster response
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes 21.5-inch wiring harness with 4 male blade terminals and square male connector
• Durable steel housing with metal construction for long-lasting use
• Standard replacement grade for reliable performance

About the Bosch Actual OE Oxygen Sensor Line

The Bosch Actual OE Oxygen Sensor product line focuses on delivering original equipment quality and fitment. These sensors are engineered to meet or exceed factory specifications, providing a direct replacement for the original sensor in your Infiniti Q45. The line emphasizes precise sensor calibration and durable materials to ensure consistent emission control and engine efficiency.

Product Details and Specifications

This Bosch oxygen sensor features a 21.5-inch wiring harness with four wires and blade-type terminals, designed for a specific fit on Infiniti Q45 models. The sensor is heated, which allows it to reach operating temperature quickly, improving fuel management and reducing emissions during cold starts. The sensor’s threaded mounting type with an 18 mm diameter and 22 mm hex size ensures secure installation. The steel housing and metal construction provide durability against harsh engine conditions. The connector is a square-shaped male type with four terminals, matching the original equipment configuration.

Common Applications and Issues Addressed

• Maintains accurate air-fuel ratio readings for engine control
• Helps reduce vehicle emissions to meet regulatory standards
• Prevents engine performance issues related to faulty oxygen sensors
• Improves fuel efficiency by providing precise sensor data
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Bosch Actual OE Oxygen Sensor 15378 on your Infiniti Q45, ensure the sensor threads are clean and free of debris. Use a 22 mm wrench for proper tightening without over-torquing. The 21.5-inch wiring harness length allows for straightforward connection to the vehicle’s existing harness. Verify the square male connector aligns correctly with the vehicle’s female connector to avoid connection issues. No mounting bracket is included, so use the original mounting location and hardware.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Actual OE Oxygen Sensor line is designed as a standard replacement part, providing consistent operation comparable to the original equipment sensor. While specific warranty details are not provided here, Bosch typically offers coverage against manufacturing defects to support customer confidence in their products.