Bosch 0280218135 Mass Air Flow Sensor

Bosch Mass Air Flow Sensor for BMW

The Bosch Mass Air Flow Sensor (New), part number 0280218135, is an OE-style replacement for select BMW applications that rely on accurate intake air measurement for proper engine management. Built with a black plastic housing, it is a direct-fit sensor for BMW X5, 545i, 645Ci, 745i, and 745Li models in the listed years.

Bosch supplies original-equipment-level components, and this sensor is intended to match the vehicle’s airflow measurement requirements closely. On BMW applications, even a small deviation from OE specification can trigger a check engine light, so precise sensor output matters.

Key Features

• Bosch Mass Air Flow Sensor (New), part number 0280218135
• Black housing with plastic construction
• Package contents: Mass Air Flow Sensor
• OE-style airflow measurement for engine control systems
• Direct replacement for select BMW emission control sensor applications

Detailed Description

This Bosch mass air flow sensor is designed for BMW vehicles that depend on accurate air metering to maintain proper fuel delivery and drivability. It is a direct replacement for BMW X5 2004-2006, BMW 545i 2004-2005, BMW 645Ci 2004-2005, BMW 745i 2004-2005, and BMW 745Li 2004-2005. The Bosch 0280218135 helps restore correct airflow signal input to the engine control system when the original sensor is worn, contaminated, or reading outside specification.

This part cross-references BMW 13627566988 for the same application.

Common Issues This Sensor May Address

• Check engine light related to mass air flow sensor performance
• Rough idle or unstable engine operation
• Incorrect air/fuel mixture caused by inaccurate airflow readings
• Reduced throttle response or hesitation during acceleration
• Driveability concerns tied to a failing BMW MAF sensor

Installation Notes and Tips

Verify the part number 0280218135 and confirm vehicle application before installation. Inspect the intake tract, air filter, and electrical connector for contamination, damage, or loose connections that could affect sensor readings. After installation, clear any stored diagnostic trouble codes and confirm proper operation with a scan tool if needed.

Quality Assurance

Bosch is an original-equipment supplier, and this sensor is built to meet the airflow measurement requirements expected in BMW engine management systems. For BMW X5, 545i, 645Ci, 745i, and 745Li applications, accurate sensor output is important because small specification differences can illuminate the check engine light.