Bosch 15266 Oxygen Sensor - Downstream Left, Upstream or Upstream Left

Reliable Oxygen Sensor for Ford and Mazda Vehicles

The Bosch Engineered Oxygen Sensor 15266 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. Specifically engineered for select Ford and Mazda models, this narrow-band heated oxygen sensor ensures precise monitoring of exhaust gases.

• Compatible with Ford 626, Probe, and Mazda Miata, Millenia, MPV, MX-6 models
• Standard replacement narrow-band heated oxygen sensor
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 15.6-inch wiring harness with 4-pin female connector
• Durable metal housing finished in steel for long-lasting use

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise emission control components tailored to specific vehicle applications. This product line emphasizes compatibility and reliability, providing sensors that meet OEM specifications for accurate exhaust gas measurement. The 15266 oxygen sensor is part of this line, offering a direct fit and heated narrow-band sensing technology for efficient engine management.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated sensor type, which helps maintain optimal engine combustion by accurately measuring oxygen levels in the exhaust. The sensor includes a 15.6-inch wiring harness with a 4-wire configuration and a rectangular female connector with four terminals, ensuring secure electrical connections. The sensor’s overall length is 19.3 inches, with 18.1 inches measured from the sealing surface to the end of the connector. It mounts via a threaded 18 mm diameter fitting and requires a 22 mm hex wrench for installation. The metal housing finished in steel provides durability under high-temperature conditions.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio readings for Ford 626 and Probe models
• Improves emissions control on Mazda Miata, Millenia, MPV, and MX-6 vehicles
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce check engine light triggers caused by sensor failure
• Supports efficient fuel consumption and reduced exhaust emissions

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 15266, ensure the vehicle is cool to avoid burns. Use a 22 mm oxygen sensor socket or wrench for removal and installation. Verify the wiring harness length and connector type match the vehicle’s factory specifications. The sensor is a specific fit part, so confirm compatibility with your Ford or Mazda model before installation. No mounting bracket is included, as the sensor mounts directly via the threaded fitting.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This standard replacement sensor undergoes rigorous testing to comply with 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.