Bosch 13892 Oxygen Sensor - Downstream Left, Downstream Right or Upstream Left

Bosch Validated Oxygen Sensor for Mazda

Bosch Validated Oxygen Sensor 13892 is a specific-fit, narrow-band heated O2 sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management for select Mazda 626 and Mazda Millenia applications.

Key Features

• Specific-fit Bosch Validated Oxygen Sensor for direct application matching
• Narrow-band heated oxygen sensor design for closed-loop fuel control
• 4-wire harness with rectangular female connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing with high-temperature-resistant construction
• Wiring harness included for installation on the listed applications
• OE-developed Bosch sensor technology refined from decades of oxygen sensor engineering

Product Details

Bosch part number 13892 uses a switching-type narrow-band design to report exhaust oxygen content to the engine control unit. Bosch developed this sensor line from its original oxygen sensor work and later planar narrowband designs, focusing on faster light-off, accurate lambda feedback, and quicker closed-loop operation. For Mazda 626 and Mazda Millenia owners, this Bosch Validated Oxygen Sensor 13892 provides the signal quality needed for consistent fuel trim control across changing operating conditions.

This part cross-references Monroe Shocks & Struts (e.g., KL1C188619U) for the same application.

Fitment

• Fits 2001-2002 Mazda 626, upstream left.
• Fits 2001-2002 Mazda Millenia, upstream left.
• Fits 1995-2002 Mazda Millenia, downstream left.
• Fits 2000 Mazda 626, upstream left, with California Emission System.
• Fits 1995-1996 Mazda Millenia, downstream right.

What It Helps Address

• Incorrect air-fuel ratio readings from a worn upstream or downstream sensor
• Check engine light conditions related to oxygen sensor performance
• Rough idle or unstable fuel control caused by slow sensor response
• Elevated emissions from inaccurate exhaust oxygen feedback
• Delayed closed-loop operation after startup

Installation Notes

Verify the connector shape, wire count, and position before installation. This sensor uses a threaded mount, 18 mm thread size, and a 4-wire harness with a female rectangular connector. Confirm the listed Mazda application and emission configuration, especially for the 2000 Mazda 626 with California Emission System.

Quality Assurance

Bosch supplies oxygen sensors with OE development experience and validated design standards used across aftermarket replacement applications. Bosch part number 13892 is built to the same technical expectations associated with Bosch oxygen sensor engineering for Mazda 626 and Mazda Millenia fitments.