Bosch 16276 Oxygen Sensor - Downstream, Downstream Right or Upstream

Bosch Actual OE Oxygen Sensor 16276

Bosch 16276 is an Actual OE Oxygen Sensor built as a narrow-band heated replacement for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management across changing operating conditions, making it a direct-fit choice for select Chrysler Crossfire and Mercedes-Benz applications.

Key Features

• Actual OE Oxygen Sensor from Bosch’s OE-focused product line
• Narrow-band heated sensor for faster closed-loop operation
• Specific-fit design with a threaded mounting style
• 4-wire configuration with a round female connector
• Steel-finish metal housing for high-temperature service
• Wiring harness included for a direct replacement setup
• 18 mm thread diameter and 22 mm hex size

Product Details

Bosch 16276 uses a switching-type oxygen sensing element to measure exhaust oxygen content and send accurate feedback to the engine control unit. Bosch developed this sensor family from its original OE oxygen sensor designs and later planar narrowband technology, focusing on quicker light-off, improved lambda accuracy, and faster closed-loop response. For drivers searching for a Bosch 16276 oxygen sensor replacement for Mercedes-Benz E320 downstream or a Chrysler Crossfire downstream right oxygen sensor, this part matches the OE-style configuration and connector layout needed for proper service.

This part cross-references 5099821AA and 0015406017 for the same application.

What It Helps Address

• Check engine lights related to oxygen sensor performance
• Rough idle or unstable air-fuel control from a worn sensor
• Inaccurate exhaust feedback affecting fuel trim correction
• Slow sensor response during closed-loop operation
• Emissions test failures tied to degraded O2 sensor output

Installation Notes and Tips

Verify the connector shape, wire count, and sensor position before installation. This Bosch oxygen sensor is a specific-fit, threaded unit with a 4-pin female connector and included harness, so confirm the vehicle’s downstream or upstream location matches the listing before ordering. Use the correct oxygen sensor socket for the 22 mm hex and 18 mm thread size, and inspect the exhaust bung threads before tightening.

Compatible With 2004-2008 Chrysler Crossfire, Downstream Right; 2005-2006 Mercedes-Benz CL500, Downstream; 2001-2006 Mercedes-Benz CL55 AMG, Downstream; 2006 Mercedes-Benz S350, Downstream; 2001-2006 Mercedes-Benz S430, Downstream; 2001-2006 Mercedes-Benz S500, Downstream; 2001-2006 Mercedes-Benz S55 AMG, Downstream; 2003-2005 Mercedes-Benz ML350, Upstream; 2002-2005 Mercedes-Benz ML500, Upstream; 2002-2004 Mercedes-Benz SLK32 AMG, Downstream; 2001-2004 Mercedes-Benz SLK320, Downstream; 2001-2003 Mercedes-Benz CL500, Downstream; 2001-2003 Mercedes-Benz E320, Downstream; 2001-2003 Mercedes-Benz ML320, Upstream; 2001-2002 Mercedes-Benz E430, Downstream; 1999-2002 Mercedes-Benz E55 AMG, Downstream; 2001 Mercedes-Benz ML430, Upstream.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience, using ceramic sensing elements, controlled heater operation, and high-temperature-resistant materials to support consistent performance in demanding exhaust environments.