Bosch 16268 Oxygen Sensor - Downstream or Upstream Right

Bosch Actual OE Oxygen Sensor 16268

Bosch 16268 is a specific-fit, narrow-band heated oxygen sensor built for precise air-fuel-ratio feedback to the ECU. It is engineered for stable closed-loop control, consistent combustion management, and dependable emissions monitoring on select Mercedes-Benz applications.

Key Features

• Actual OE Oxygen Sensor from Bosch’s OE-focused product line
• Narrow-band heated oxygen sensor for faster closed-loop operation
• Specific fit with threaded mounting and round female connector
• 4-wire design with included wiring harness
• 22 mm hex size and 18 mm thread diameter
• Metal housing with high-temperature-resistant construction
• Fits 2005-2011 Mercedes-Benz SLK55 AMG, Upstream Right
• Fits 2006-2007 Mercedes-Benz ML500, Upstream Right
• Fits 2006-2007 Mercedes-Benz R500, Upstream Right
• Fits 2002 Mercedes-Benz C230, Downstream

Product Details

Bosch’s Actual OE Oxygen Sensor line draws on decades of original-equipment development, including early thimble-style sensors and later planar narrowband designs. Bosch 16268 uses a heated narrow-band sensing element with optimized heater control and ceramic construction to deliver accurate lambda feedback across changing temperatures and vibration loads. This part cross-references 0015404717 for the same application. The Bosch 16268 oxygen sensor is a direct-fit replacement for select Mercedes-Benz models, including SLK55 AMG, ML500, R500, and C230 applications listed above.

Common Issues This Part Can Address

• Fault codes related to oxygen sensor response or signal range
• Rough idle caused by inaccurate air-fuel feedback
• Increased emissions from delayed closed-loop correction
• Fuel trim instability from a worn narrow-band sensor
• Check engine light concerns tied to upstream or downstream O2 monitoring

Installation Notes and Tips

Confirm the sensor position, connector shape, wire count, and thread size before installation. Bosch 16268 uses a threaded mount with a 18 mm thread diameter and 22 mm hex size, so the correct oxygen sensor socket is recommended. Inspect the harness routing and connector condition during replacement, and verify the vehicle application against the listed Mercedes-Benz fitment before ordering.

Quality Assurance

Bosch backs this oxygen sensor with OE development experience and materials selected for heat and vibration resistance. The design reflects Bosch’s long-running role in oxygen sensor engineering and OE supply, with a focus on accurate signal output and durable operation in demanding exhaust environments.