Bosch 13226 Oxygen Sensor - Downstream Right

Bosch Actual OE Oxygen Sensor 13226

Bosch 13226 is a specific-fit narrow-band heated oxygen sensor for downstream right applications on select Nissan Pathfinder and INFINITI QX4 models. It provides precise air-fuel-ratio feedback to the ECU for stable closed-loop fuel control and emissions monitoring.

The Bosch Actual OE Oxygen Sensor line builds on Bosch’s long OE development history, including early thimble-style sensors and later planar narrowband designs that improve light-off speed, lambda accuracy, and closed-loop response. This Bosch 13226 sensor uses a threaded metal housing, a square male connector, and an integrated wiring harness for direct replacement service.

Key Features

• Specific-fit Bosch oxygen sensor for downstream right placement
• Narrow-band heated sensor design for accurate exhaust feedback
• 4-wire configuration with blade terminals and square male connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included with 33.1 in harness length
• Standard replacement grade for OE-style service
• Metal housing built for high-temperature and vibration exposure

Detailed Description

Bosch 13226 is an Actual OE Oxygen Sensor engineered for vehicles that require a narrow-band heated sensor in the downstream right position. It measures exhaust oxygen content and sends the signal needed for fuel-trim control and emissions management. This part number is commonly searched for Nissan Pathfinder oxygen sensor replacement and INFINITI QX4 downstream right oxygen sensor service, especially when diagnosing drivability or emissions faults.

As part of Bosch’s OE-focused oxygen sensor line, this sensor uses advanced ceramic elements and controlled heater operation to support fast sensor activity and consistent signal output under demanding thermal conditions. Bosch 13226 is a direct-fit replacement for select 1996-2000 Nissan Pathfinder, 2000 Nissan Pathfinder, and 1997-2000 INFINITI QX4 applications listed below.

This part cross-references 226A00W002 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Rough idle or inconsistent closed-loop fuel control
• Emissions test failures tied to downstream sensor faults
• Slow sensor response from an aging narrow-band O2 sensor

Installation Notes and Tips

• Verify the downstream right location before ordering Bosch 13226.
• Confirm connector shape, wire count, and threaded mounting match the original sensor.
• Inspect the exhaust bung threads and clean corrosion before installation.
• Use the correct oxygen sensor socket for the 22 mm hex size.
• Route the harness away from hot exhaust components and moving parts.

Quality Assurance

Bosch supplies oxygen sensors with OE development experience and application-specific engineering for consistent signal accuracy and durability. Bosch 13226 is built as an Actual OE Oxygen Sensor for select Nissan Pathfinder and INFINITI QX4 applications, with materials and heater control suited to harsh exhaust environments.

• Fits 1997-2000 INFINITI QX4, Downstream Right
• Fits 1996-2000 Nissan Pathfinder, Downstream Right
• Fits 2000 Nissan Pathfinder, Downstream Right