Bosch 13289 Oxygen Sensor - Downstream, Upstream Left or Upstream Right

Bosch Oxygen Sensor for Mazda and Ford

Bosch Engineered Oxygen Sensor 13289 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 across changing operating conditions, making it a direct replacement choice for select Mazda 626, Mazda MX-6, Mazda 929, and Ford Probe applications.

Backed by Bosch’s OE development history, this sensor uses advanced ceramic elements, optimized heater control, and high-temperature-resistant materials for consistent signal performance in demanding exhaust environments. Bosch 13289 is a practical replacement for drivers addressing drivability or emissions-related sensor wear on the listed vehicles.

Key Features

• Specific-fit Bosch Engineered Oxygen Sensor for listed Mazda and Ford applications
• Narrow-band heated oxygen sensor design for closed-loop fuel control
• 4-wire configuration with blade terminals and rectangular connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included for direct replacement installation
• Metal housing with steel finish for exhaust-system durability
• Overall length: 20.1 in; harness length: 16.4 in

Product Details

Bosch 13289 is engineered as a standard replacement oxygen sensor for vehicles that rely on narrow-band feedback to maintain the correct air-fuel mixture. The heated design helps the sensor reach operating temperature quickly, which supports faster closed-loop operation after startup. This is especially relevant for older Mazda 626, Mazda MX-6, Mazda 929, and Ford Probe platforms where accurate upstream or downstream sensor input is critical to engine management.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Fitment

• Fits 2000 Mazda 626, Upstream Right; without California Emission System
• Fits 1998-1999 Mazda 626, Upstream Right
• Fits 1996-1997 Ford Probe, Downstream
• Fits 1996-1997 Mazda 626, Downstream
• Fits 1996-1997 Mazda MX-6, Downstream
• Fits 1992-1995 Mazda 929, Upstream Left

What It Helps Address

• Faulty oxygen sensor signal causing unstable fuel trim
• Check engine light concerns related to O2 sensor performance
• Rough idle or hesitation tied to incorrect air-fuel feedback
• Emissions test failures caused by aging sensor response
• Slow sensor warm-up or delayed closed-loop operation

Installation Notes

Confirm the vehicle position before installation: upstream right, downstream, or upstream left as listed for the application. Verify the 18 mm thread size, 4-wire connector layout, and rectangular male connector match the original sensor before replacement. Because this is a threaded exhaust sensor, proper removal tools and anti-seize practices should be used only if specified by the vehicle service procedure.

Quality Assurance

Bosch draws on more than five decades of OE oxygen sensor development, and this Engineered Oxygen Sensor line is built to OE-proven standards for accuracy, heater control, and durability under heat and vibration.