Bosch 15511 Oxygen Sensor

Bosch Oxygen Sensor for OE-Style Emissions Control

Bosch Part Number 15511 is a specific-fit, narrow-band heated oxygen sensor built for precise air-fuel ratio feedback to the engine control unit. It supports stable combustion control and emissions management across changing operating conditions, making it a direct replacement choice for select Ram, Dodge, Jeep, and Volkswagen applications.

As part of the Bosch Engineered Oxygen Sensor line, this sensor reflects Bosch’s long OE development history in oxygen sensing technology. The design uses advanced ceramic sensing elements, controlled heater operation, and high-temperature materials to deliver consistent signal response in demanding exhaust environments.

Key Features

• Specific-fit Bosch oxygen sensor, Part Number 15511
• Narrow-band heated O2 sensor for closed-loop fuel control
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• 4-wire design with included wiring harness
• Rectangle connector, male connector gender, female terminal gender
• Standard replacement grade for OE-style service
• Metal housing with heat- and vibration-resistant construction

Detailed Description

Bosch 15511 is engineered to measure exhaust oxygen content and send accurate feedback to the ECU so the engine can maintain the proper air-fuel mixture. That signal is critical for drivability, fuel control, and emissions performance on vehicles such as the 2001-2003 Dodge Dakota, 2004-2005 Dodge Ram 1500, 2004 Jeep Grand Cherokee, 2004 Jeep TJ, 2004 Jeep Wrangler, 2003 Dodge Ram 3500, 2003-2006 Dodge Viper, 2009-2010 Volkswagen Routan, and 2011 Ram 2500 and 3500.

This Bosch Engineered Oxygen Sensor line is based on Bosch OE development that began with early oxygen sensor designs and later advanced to faster-response planar narrowband technology. The result is a replacement sensor focused on accurate lambda feedback, quicker closed-loop operation, and dependable performance under thermal stress. This part cross-references Mopar 56028995AA for the same application.

What It Helps Address

• Check engine light caused by a failing upstream or downstream oxygen sensor
• Rough idle or unstable air-fuel control from inaccurate O2 feedback
• Reduced fuel economy related to poor closed-loop operation
• Emissions test failures tied to sensor response or signal degradation
• Slow sensor switching or heater-related fault codes

Installation Notes and Tips

Verify the sensor position before ordering, since this part is listed for upstream, downstream, upstream right, downstream right, and upstream left locations depending on application. Confirm the 4-wire connector style, threaded mount, and 18 mm thread size match the original sensor on your vehicle. For best results, inspect the exhaust bung threads and wiring routing before installation, and compare the original connector and harness length to the Bosch 15511 sensor.

Compatible With 2001-2003 Dodge Dakota, upstream left; 2001-2003 Dodge Durango, upstream left; 2003 Dodge Ram 3500, upstream left; 2004-2005 Dodge Ram 1500, upstream right; 2004 Jeep Grand Cherokee, upstream; 2004 Jeep TJ, upstream; 2004 Jeep Wrangler, upstream; 2003-2006 Dodge Viper, upstream; 2009-2010 Volkswagen Routan, downstream; 2011 Ram 2500, downstream right; and 2011 Ram 3500, downstream right.

Quality Assurance

Bosch supplies oxygen sensors with OE-focused engineering and durable materials intended to maintain accurate signal performance in harsh exhaust conditions. Part Number 15511 is built as a standard replacement sensor for select factory applications, including Ram, Dodge, Jeep, and Volkswagen vehicles.