Bosch 15825 Oxygen Sensor - Downstream Left, Upstream or Upstream Right

Bosch Oxygen Sensor for OE Replacement

Bosch Engineered Oxygen Sensor 15825 is a narrow-band heated O2 sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management in vehicles that require a specific-fit replacement, including Jeep Grand Cherokee, Dodge Dakota, Dodge Durango, and Dodge Ram 1500 applications.

Key Features

• Specific-fit Bosch oxygen sensor for direct application matching
• Narrow-band heated design for closed-loop fuel control
• 4-wire configuration with included wiring harness
• Threaded mounting with 18 mm thread size and 22 mm hex
• Female rectangle connector with pin terminals
• Metal housing and high-temperature-resistant construction
• Wiring harness length: 15.9 in; overall length: 19.3 in

Product Details

Bosch part number 15825 uses advanced ceramic sensing elements and optimized heater control to deliver fast sensor response and accurate lambda feedback across changing exhaust temperatures. As part of the Bosch Engineered Oxygen Sensor line, it reflects Bosch’s long OE development history and narrowband sensor expertise. This sensor is a direct replacement choice for vehicles that need dependable upstream or downstream oxygen sensor performance, including 2001-2004 Jeep Grand Cherokee, 2001-2002 Dodge Dakota, 2001-2002 Dodge Durango with California Emission System, and 2002 Dodge Ram 1500 applications. This part cross-references Mopar 56028587AA for the same application.

What It Helps Fix

• Check engine light related to oxygen sensor circuit or response faults
• Rich or lean fuel trim conditions caused by inaccurate O2 readings
• Slow closed-loop operation after startup
• Emissions test failures tied to sensor performance
• Rough idle or unstable combustion control from degraded sensor output

Installation Notes

Fits 2001-2004 Jeep Grand Cherokee, upstream right. Fits 2001-2002 Dodge Dakota, downstream left. Fits 2001-2002 Dodge Durango, downstream left, with California Emission System. Fits 2002 Dodge Ram 1500, upstream. Fits 2002 Dodge Ram 1500, downstream left. Verify connector shape, thread size, and sensor position before installation. Use the threaded mounting point and route the harness to avoid heat and abrasion near the exhaust.

Quality Assurance

Bosch supplies oxygen sensors backed by more than five decades of OE development, with materials and heater control engineered for harsh thermal and vibration loads. Bosch 15825 is built to OE-level standards for accurate signal delivery and durable service in emission control applications.