Bosch 17281 Oxygen Sensor - Upstream

Overview of Bosch Actual OE Oxygen Sensor 17281

The Bosch Actual OE Oxygen Sensor 17281 is designed specifically for select BMW and Mercedes-Benz models, including the C300, E350, and X5. This heated wide-band oxygen sensor ensures accurate air-fuel mixture readings for optimal engine performance and emissions control.

• Heated oxygen sensor for faster response times
• Specific fit for BMW and Mercedes-Benz vehicles
• 17.6-inch wiring harness with oblong male connector
• Threaded mounting type with 18 mm thread diameter
• Wide-band sensor type for precise air-fuel ratio measurement
• Standard replacement grade with metal housing and steel finish
• Includes wiring harness with 5 wires and 6 terminals
• Compatible with models such as BMW X5 and Mercedes-Benz CLS550

Detailed Product Description

The Bosch Actual OE Oxygen Sensor 17281 is engineered as a direct replacement part, maintaining the original equipment specifications for fit and function. Featuring a heated design, this sensor quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for engine control units to adjust fuel injection and reduce emissions. The sensor’s wide-band technology offers a broader measurement range compared to narrow-band sensors, improving fuel efficiency and emission control.

This oxygen sensor includes a 17.6-inch wiring harness with an oblong male connector and blade-type terminals, ensuring secure and reliable electrical connections. The sensor is threaded with an 18 mm diameter and a 22 mm hex size for installation using standard tools. Its metal housing and steel finish provide durability under high-temperature exhaust conditions. The Bosch Actual OE Oxygen Sensor 17281 is compatible with specific BMW and Mercedes-Benz models such as the C300, E350, CLS63 AMG, and GLK350.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for engine control
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by optimizing combustion efficiency
• Reduces harmful emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

• Ensure vehicle compatibility with Bosch part number 17281 before installation
• Use a 22 mm oxygen sensor socket for removal and installation
• Do not overtighten; torque to manufacturer specifications
• Inspect wiring harness and connectors for damage before installation
• Allow the sensor to reach operating temperature for accurate diagnostics

Quality Assurance and Warranty

The Bosch Actual OE Oxygen Sensor 17281 is manufactured to meet OEM standards for fit, form, and function. Bosch’s quality control processes ensure reliable performance and durability under typical operating conditions. This sensor is a standard replacement grade part designed to maintain vehicle emissions compliance. Warranty coverage details should be confirmed with the point of purchase or Bosch directly.