Bosch 16274 Oxygen Sensor - Upstream or Upstream Left

Overview of Bosch Actual OE Oxygen Sensor 16274

The Bosch Actual OE Oxygen Sensor 16274 is designed specifically for select Mercedes-Benz models, including the CL55 AMG, E55 AMG, and S500. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Specific fit for Mercedes-Benz CL55 AMG, CL500, E55 AMG, E320, E430, S55 AMG, S350, S430, and S500
• Heated narrow-band oxygen sensor for improved response time
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Four-wire design with a 15.9-inch wiring harness length and round female connector
• Durable metal housing finished in steel for long-lasting performance
• Standard replacement grade for reliable emissions control

Detailed Product Description

The Bosch Actual OE Oxygen Sensor 16274 is engineered as a direct replacement part, matching the original equipment specifications for Mercedes-Benz vehicles. Featuring a narrow-band sensor type, it accurately measures oxygen levels in the exhaust gases to help maintain efficient combustion and reduce harmful emissions. The sensor is heated, which allows it to reach operating temperature quickly, improving sensor response and engine control during cold starts.

This oxygen sensor includes a 15.9-inch wiring harness with four wires and a round female connector, ensuring a secure and precise electrical connection. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation using standard tools. The sensor’s metal housing and steel finish provide durability against harsh engine conditions.

About the Bosch Actual OE Oxygen Sensor Product Line

The Bosch Actual OE Oxygen Sensor line is designed to meet original equipment standards, providing a reliable and precise fit for specific vehicle applications. This product line focuses on delivering sensors that maintain factory-level performance and emissions compliance, making it suitable for professional repairs and maintenance on Mercedes-Benz models requiring exact replacement parts.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce vehicle emissions to meet regulatory standards
• Eliminates check engine light triggers caused by sensor failure
• Prevents rough idling and poor acceleration linked to sensor malfunction

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use a 22 mm oxygen sensor socket for proper removal and installation
• Do not overtighten; torque to manufacturer specifications to avoid damage
• Verify connector compatibility with the vehicle’s wiring harness before installation
• Inspect wiring and connectors for damage or corrosion during replacement

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Actual OE Oxygen Sensor 16274 is a standard replacement grade part designed to match original equipment specifications. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship to support long-term use.