Bosch 16183 Oxygen Sensor - Downstream or Downstream Right

Bosch Actual OE Oxygen Sensor 16183

Bosch 16183 is a specific-fit, narrow-band heated oxygen sensor built for downstream monitoring on select Mercedes-Benz applications. It uses a threaded mounting design, a 4-wire harness, and a round female connector to deliver stable air-fuel feedback to the ECU under normal driving and high-temperature conditions.

Key Features

• Actual OE Oxygen Sensor from Bosch Actual OE Oxygen Sensor line
• Narrow-band heated O2 sensor for downstream air-fuel monitoring
• Specific fit with included wiring harness
• 4-wire, pin-terminal design with round female connector
• Threaded mount with 18 mm thread size and 22 mm hex size
• Steel-finish metal housing for durability in exhaust environments
• Part number 16183 for direct catalog lookup

OE-Style Sensor Performance

Bosch developed this oxygen sensor line from decades of OE engineering, starting with early sensor designs and advancing to planar narrowband technology for faster light-off and more accurate lambda control. Bosch 16183 uses a heated ceramic sensing element and controlled heater operation to help the ECU maintain stable combustion control and reduce emissions. For Mercedes-Benz C240, C320, CLK320, CLK500, CLK55 AMG, C32 AMG, C55 AMG, ML500, and R500 applications, this sensor supports downstream exhaust monitoring where precise signal response matters.

This part cross-references 0015404617 for the same application.

What This Sensor Helps Address

• Check engine light related to downstream oxygen sensor performance
• Erratic air-fuel ratio feedback from a worn narrow-band sensor
• Slow sensor response during closed-loop operation
• Emissions test failures tied to oxygen sensor output
• Driveability issues caused by inaccurate exhaust oxygen readings

Installation Notes

Install Bosch 16183 in the threaded downstream location specified for the vehicle. Confirm connector shape, terminal count, wire count, and harness length before installation. Use the 18 mm thread size and 22 mm hex size to match the exhaust bung and removal tool requirements. Verify the sensor position against the vehicle listing, since this part is listed for downstream and downstream right locations on specific Mercedes-Benz models.

• Fits 2006-2007 Mercedes-Benz ML500, downstream right
• Fits 2006-2007 Mercedes-Benz R500, downstream right
• Fits 2005-2006 Mercedes-Benz C55 AMG, downstream
• Fits 2003-2006 Mercedes-Benz CLK500, downstream
• Fits 2003-2006 Mercedes-Benz CLK55 AMG, downstream
• Fits 2001-2005 Mercedes-Benz C240, downstream
• Fits 2003-2005 Mercedes-Benz C240, downstream right
• Fits 2001-2005 Mercedes-Benz C320, downstream
• Fits 2003-2005 Mercedes-Benz C320, downstream right
• Fits 2003-2005 Mercedes-Benz CLK320, downstream
• Fits 2002-2004 Mercedes-Benz C32 AMG, downstream

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development and aftermarket supply experience. The design uses high-temperature-resistant materials and OE-proven engineering for consistent operation in demanding exhaust conditions.