Bosch 13539 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Acura, Honda, and Isuzu Vehicles

The Bosch Engineered Oxygen Sensor 13539 is designed specifically for select Acura, Honda, and Isuzu models, including the Accord, Civic, CR-V, and Odyssey. This narrow-band heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions control.

• Specific fit for Acura, Honda, and Isuzu models such as Accord, Civic, Civic del Sol, CL, CR-V, Integra, Oasis, Odyssey, and Prelude
• Heated narrow-band oxygen sensor type for precise emissions monitoring
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size for secure installation
• Includes a 10-inch wiring harness with 4 male blade terminals and a rectangular male connector
• Constructed with durable metal housing finished in steel for long-lasting use
• Overall length of 13.4 inches and wiring harness length of 10 inches for proper fitment
• Standard replacement grade ensuring reliable performance

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise and reliable sensors tailored to specific vehicle applications. The 13539 part number is part of this line, engineered to meet OEM specifications for emission control sensors. This ensures compatibility and consistent performance in emission systems for Acura, Honda, and Isuzu vehicles.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated sensor type, which provides accurate feedback to the engine control unit for efficient fuel management and reduced emissions. The sensor is threaded with an 18 mm diameter and includes a 22 mm hex size for easy installation with standard tools. The metal housing and steel finish provide durability under high-temperature conditions. The sensor comes with a 10-inch wiring harness that includes four wires and a rectangular male connector with four male blade terminals, ensuring a secure electrical connection. The overall length of the sensor is 13.4 inches, with 12.2 inches measured from the sealing surface to the end of the connector.

Common Applications and Issues Addressed

• Helps resolve poor fuel economy caused by incorrect air-fuel mixture readings
• Reduces engine performance issues related to faulty oxygen sensors
• Assists in passing emissions tests by maintaining proper exhaust gas monitoring
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine idling and acceleration by providing accurate sensor data

Installation Notes and Tips

Installation requires a 22 mm oxygen sensor socket or wrench. Ensure the vehicle is cool before removal to avoid burns. The threaded mounting type allows for straightforward replacement in compatible Acura, Honda, and Isuzu models. Verify connector compatibility with the vehicle’s wiring harness before installation. No mounting bracket is included, so use the existing mounting point on the exhaust system. Handle the sensor carefully to avoid damaging the wiring harness or sensor tip.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 13539 is manufactured to meet OEM standards for fit, form, and function. It is a standard replacement grade sensor designed for reliable operation in emission control systems. Bosch products typically come with a limited warranty covering defects in materials and workmanship; please refer to Bosch’s official warranty policy for specific terms.