Bosch 17016 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Bosch Wideband OE Oxygen Sensor

Bosch 17016 is an Actual OE Oxygen Sensor built as a wideband air-fuel sensor for precise mixture monitoring. It provides the ECU with continuous, high-resolution feedback across the full lambda range, helping maintain accurate fuel control in demanding driving conditions.

Compatible With Mercedes-Benz E350, C300, GLK350, ML350, SLK350, and related applications, this Bosch wideband sensor uses a heated design, a 5-wire harness, and a threaded mounting style for specific-fit replacement service. The Bosch Actual OE Oxygen Sensor line is based on OE development experience and is engineered for stable signal response, fast light-off, and durable operation under thermal cycling.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement
• Heated sensor design for faster operating temperature
• Specific-fit replacement with included wiring harness
• 5-wire configuration with blade terminals and oblong connector
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Robust metal housing for underhood durability
• Bosch part number 17016 for OE-style replacement service

Product Details

Bosch 17016 is part of the Actual OE Oxygen Sensor line, which focuses on OE-proven sensor technology for modern engine management systems. Unlike traditional switching sensors, this wideband sensor measures the air-fuel ratio continuously, giving the ECU more detailed data for precise control of fuel delivery and emissions strategy. That makes it a strong choice for Mercedes-Benz E300, E350, C350, C63 AMG, GL550, and other listed applications where accurate upstream or downstream feedback is required. This part cross-references Mercedes-Benz OE numbers 0035427018 and 68012050AA for the same application.

What It Helps Address

• Check engine lights related to oxygen sensor performance
• Rough idle or inconsistent air-fuel mixture control
• Reduced fuel economy caused by inaccurate sensor feedback
• Slow sensor response during acceleration or load changes
• Emissions test failures tied to faulty wideband readings

Installation Notes

Verify the sensor position before ordering, since this part is listed for upstream, downstream, upstream left, and upstream right locations depending on vehicle application. Confirm connector shape, wire count, thread size, and harness length against the original sensor before installation. Use proper oxygen sensor service tools and follow the vehicle manufacturer’s torque specifications to avoid thread or wiring damage.

Quality Assurance

Bosch has more than five decades of OE development experience in oxygen sensor technology. The 17016 wideband sensor is built to OE-style standards with fast light-off, optimized heater control, and ceramic construction intended for reliable signal accuracy in demanding engine environments.