Bosch 15224 Oxygen Sensor - Downstream Front or Downstream Left

Bosch Actual OE Oxygen Sensor 15224

Bosch 15224 is a specific-fit, narrow-band heated oxygen sensor built for accurate air-fuel ratio feedback to the ECU. It is engineered for stable combustion control and consistent emissions monitoring in demanding operating conditions.

Key Features

• Specific-fit Bosch Actual OE Oxygen Sensor for direct application matching
• Narrow-band heated oxygen sensor with 4-wire configuration
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Square connector with male terminals and included wiring harness
• Metal housing and high-temperature-resistant construction for underbody use
• Wiring harness length: 29.2 in; overall length: 32.9 in

Product Line Details

Bosch Actual OE Oxygen Sensor parts are based on Bosch’s long OE development history in oxygen sensing technology. This line uses ceramic sensing elements and controlled heater operation to deliver fast warm-up, accurate lambda feedback, and reliable closed-loop response across changing exhaust temperatures. Bosch 15224 follows that OE-focused approach for drivers who need a direct replacement sensor with factory-style performance characteristics.

Detailed Description

This Bosch oxygen sensor is a narrow-band heated replacement for downstream applications on select Nissan and INFINITI vehicles. It is listed for 2002-2004 INFINITI I35, downstream left, and 2002-2003 Nissan Maxima, downstream front. Bosch 15224 provides the ECU with precise exhaust oxygen data so the engine management system can maintain proper fuel control and emissions operation. This part cross-references 226A15Y701 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 unstable closed-loop fuel control
• Emissions test failures tied to sensor response issues
• Slow sensor warm-up or degraded heater circuit operation

Installation Notes and Tips

Verify the connector shape, wire count, thread size, and sensor position before installation. This sensor uses a threaded mount, 4-wire layout, and square male connector, so matching the original configuration is important for proper installation. Inspect the exhaust bung threads and wiring routing before tightening the sensor to the specified location on the vehicle.

Quality Assurance

Bosch backs this Actual OE Oxygen Sensor line with more than five decades of OE development experience and a design approach centered on factory-style accuracy, heater control, and durability under heat and vibration. Fits 2002-2004 INFINITI I35, downstream left, and 2002-2003 Nissan Maxima, downstream front.