Bosch 13581 Oxygen Sensor - Downstream, Downstream Right or Upstream

Reliable Oxygen Sensor for Kia and Mazda Vehicles

The Bosch Engineered Oxygen Sensor 13581 is designed specifically for select Kia and Mazda models, including the Miata, Millenia, MX-3, Protege, and Sephia. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance.

• Specific fit for Kia and Mazda models
• Heated narrow-band oxygen sensor type
• Threaded mounting with 18 mm thread diameter
• 29.2-inch wiring harness length with 4-pin rectangular female connector
• Standard replacement grade with metal housing and steel finish
• Overall length of 32.9 inches for precise installation

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering reliable emission control components engineered to meet OEM specifications. This product line emphasizes precise fitment and durable construction, such as the metal housing and heated sensor element found in part number 13581, ensuring consistent sensor response and longevity in demanding automotive environments.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated sensor type, which helps maintain accurate air-fuel mixture readings for efficient combustion and reduced emissions. The sensor includes a 4-wire configuration with a 4-pin rectangular female connector, facilitating straightforward electrical connections. Its threaded mounting type with an 18 mm thread diameter and 22 mm hex size allows for secure installation. The wiring harness length of 29.2 inches and overall length of 32.9 inches provide ample reach for proper placement in the exhaust system. Constructed with a metal housing and finished in steel, this sensor is built to withstand harsh operating conditions.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for Kia Miata and Mazda MX-3 engines
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing precise air-fuel ratio data
• Reduces harmful emissions by ensuring proper catalytic converter function
• Eliminates rough idling or poor engine performance caused by faulty sensors

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 13581, ensure the sensor is threaded securely into the exhaust manifold or pipe using the 22 mm hex size tool. Verify the wiring harness is connected to the vehicle’s female 4-pin connector to avoid electrical issues. No mounting bracket is included, so use the existing mounting location. It is recommended to inspect the wiring harness for damage and replace any worn connectors to maintain sensor functionality.

Quality Assurance and Warranty

Bosch Engineered Oxygen Sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This part is a standard replacement grade sensor designed to meet OEM specifications. While specific warranty details are not provided here, Bosch typically offers limited warranties on their emission control components. Refer to Bosch or your parts provider for exact warranty terms.