Bosch 13737 Oxygen Sensor - Upstream, Upstream Rear or Upstream Right

Overview of Bosch Validated Oxygen Sensor 13737

The Bosch Validated Oxygen Sensor 13737 is designed specifically for Toyota 4Runner, Highlander, and Sienna models. This heated, wide-band oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions control.

• Heated oxygen sensor for faster response times
• Specific fit for Toyota 4Runner, Highlander, and Sienna
• 4-wire design with blade terminals and square male connector
• Threaded mounting type with 18 mm thread diameter
• Durable metal housing with steel finish
• Includes wiring harness with 5.6-inch length
• Standard replacement grade for reliable performance

Detailed Product Features and Specifications

This Bosch oxygen sensor (part number 13737) features a wide-band sensor type that provides precise measurement of oxygen levels in the exhaust gases. The heated element allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes a 4-wire configuration with blade-type terminals and a square male connector, ensuring secure and proper electrical connections. The wiring harness length is 5.6 inches, and the overall length from sealing surface to connector end is 7.9 inches, making installation straightforward.

The sensor is constructed with a metal housing finished in steel, providing durability and resistance to harsh engine conditions. It mounts via a threaded 18 mm diameter fitting, compatible with the specified Toyota models. This part is a standard replacement grade, designed to meet OEM specifications for emission control sensors.

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering sensors that meet strict validation standards for fit, form, and function. This ensures that each sensor, including the 13737 model, is engineered to provide reliable emissions control and accurate sensor readings. The line supports specific vehicle applications, such as the Toyota 4Runner, Highlander, and Sienna, to maintain compliance with emissions regulations and optimize engine management systems.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel economy
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful exhaust emissions
• Improves engine performance by ensuring proper combustion
• Prevents rough idling and engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 13737, ensure the vehicle is compatible with this specific fitment for Toyota 4Runner, Highlander, and Sienna models. Use a 22 mm hex socket for sensor removal and installation. Verify the wiring harness connections match the blade terminal and square male connector configuration. Avoid overtightening the threaded sensor to prevent damage to the mounting threads. It is recommended to replace the sensor when the engine is cool to prevent burns and ensure proper torque application.

Quality Assurance and Warranty

Bosch manufactures the 13737 oxygen sensor to meet stringent quality standards, ensuring durability and reliable performance in emission control systems. This sensor is a standard replacement grade part, designed to meet or exceed OEM specifications. While specific warranty details are not provided here, Bosch typically offers limited warranties on their oxygen sensors to cover defects in materials and workmanship.