Bosch 15298 Oxygen Sensor - Upstream

Bosch Validated Oxygen Sensor for Chrysler and Dodge

Bosch Validated Oxygen Sensor 15298 is a specific-fit, narrow-band heated O2 sensor for upstream applications on select Chrysler and Dodge vehicles. It provides precise air-fuel-ratio feedback to the ECU, helping maintain stable combustion control and lower emissions.

Built with a threaded mounting design, 4-wire configuration, round female connector, and included wiring harness, this Bosch oxygen sensor is engineered for direct replacement service on 2003-2004 Chrysler 300M, Concorde, and Intrepid, plus 2003-2004 Dodge Intrepid.

Key Features

• Part number 15298 Bosch Validated Oxygen Sensor
• Narrow-band heated oxygen sensor type for upstream use
• Specific fit for select Chrysler and Dodge applications
• 4-wire design with pin terminals and round female connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included for direct replacement service
• Metal housing and high-temperature-resistant construction

Product Details

Bosch Validated Oxygen Sensor 15298 uses Bosch OE development experience to deliver accurate switching-type O2 sensor performance. The sensor measures exhaust oxygen content and sends data to the ECU so the engine can adjust fuel delivery during closed-loop operation. Bosch’s narrow-band design, ceramic sensing element, and optimized heater control support faster light-off and consistent signal response under heat and vibration.

This part cross-references 4606555AC for the same application. It is a direct-fit oxygen sensor for 2003-2004 Chrysler 300M upstream, 2003-2004 Chrysler Concorde upstream, 2003-2004 Chrysler Intrepid upstream, and 2003-2004 Dodge Intrepid upstream. Use Bosch 15298 when replacing a worn upstream sensor on these vehicles.

Common Issues This Sensor Can Help 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
• Increased exhaust emissions from a slow or inaccurate sensor
• Delayed sensor response during warm-up or normal driving

Installation Notes

Confirm upstream location before installation and verify connector shape, thread size, and harness length against the original sensor. The sensor uses an 18 mm thread diameter, 22 mm hex size, and a 4-wire round female connector. Inspect the exhaust bung threads and wiring routing before tightening the sensor to specification.

For best results, clear diagnostic trouble codes after installation and verify fuel trim and sensor switching behavior during a road test. Bosch Validated Oxygen Sensor 15298 is a direct replacement choice for Chrysler 300M, Concorde, Intrepid, and Dodge Intrepid upstream service.

Quality Assurance

Bosch has decades of OE oxygen sensor development behind this product line, including early thimble sensor designs and later planar narrow-band technology. That engineering background supports consistent signal accuracy, durable heater performance, and dependable operation in demanding thermal conditions.