Bosch 15508 Oxygen Sensor - Downstream, Downstream Right or Upstream

Bosch Validated Oxygen Sensor for Dodge Applications

Bosch Validated Oxygen Sensor 15508 is a specific-fit, narrow-band heated O2 sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management in 2004-2005 Dodge Durango, 2004 Dodge Dakota, and 2004 Dodge Ram 1500 applications.

Key Features

• Specific-fit Bosch Validated Oxygen Sensor for direct application matching
• Narrow-band heated design for faster closed-loop operation
• 4-wire configuration with pin terminals and rectangular female connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included with 9.5 in harness length and 12 in sealing-surface-to-connector length
• Metal housing and high-temperature-resistant construction for demanding exhaust conditions
• Part number 15508 for easy identification and ordering

Product Details

Bosch Validated Oxygen Sensor 15508 uses Bosch’s OE development experience in switching-type oxygen sensing to deliver accurate lambda feedback across changing engine loads and temperatures. The narrow-band heated sensor design helps the engine control module maintain the correct air-fuel ratio, while the ceramic sensing element and optimized heater control support quicker light-off and consistent signal response. This Bosch oxygen sensor is a direct replacement choice for Dodge Durango, Dodge Dakota, and Dodge Ram 1500 models listed in the fitment data.

This part cross-references Mopar 56028998AA for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings sent to the ECU
• Rough idle or unstable combustion control caused by aging sensor output
• Slow sensor response during closed-loop operation
• Emissions test failures tied to a worn upstream or downstream sensor

Installation Notes and Tips

Fits 2004-2005 Dodge Durango, upstream; Fits 2004-2005 Dodge Durango, downstream right; Fits 2004 Dodge Dakota, upstream; Fits 2004 Dodge Dakota, downstream right; Fits 2004 Dodge Ram 1500, downstream; Fits 2004 Dodge Ram 1500, upstream. Verify connector shape, wire count, and sensor position before installation. Use the threaded mounting point and correct 18 mm oxygen sensor socket for removal and installation. Confirm the harness routing matches the original layout to avoid strain on the connector.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE sensor development and aftermarket supply experience. The Bosch Validated Oxygen Sensor line is built around OE-proven design principles for accurate signal control, durability, and consistent performance in high-heat exhaust environments.