Mercedes W169 W221 Air Intake Temperature Sensor A6511530028

Mercedes W169 W221 Air Intake Temperature Sensor is a component from the Air and fuel intake sensors group, responsible for the precise reading of intake air temperature in selected Mercedes models. A properly functioning sensor supports stable engine operation, improves engine performance, and helps maintain optimal combustion parameters.

Specifications and technical data

• SKU: A6511530028
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6511530028
• Substitutable numbers: A6511530028, A 651 153 00 28, A0005422818, A 000 542 28 18, EM
• Category: Air Intake & Fuel Sensors

Function and application of the air temperature sensor

The air temperature sensor in Mercedes W169 and W221 series models transmits information about the current temperature of the air drawn into the intake system to the engine control unit. Based on this, the controller adjusts the fuel dose, ignition timing, and other operating parameters, which translates into:

• more stable idle speed,
• more predictable throttle response,
• smoother starts in varying temperature conditions,
• reduced risk of excessive fuel consumption.

For the user, this means more consistent vehicle behavior and fewer performance fluctuations depending on the ambient temperature.

Benefits of using an original Mercedes sensor

The offered Mercedes Air Intake Temperature Sensor is a dismantled part that complies with the manufacturer's factory specifications. In practice, this ensures:

• fitment to the wiring harness and mounting socket without modifications,
• correct resistance characteristics as a function of temperature,
• consistency with the engine control unit maps intended for this reference.

As a result, installation is similar to the factory process, and the risk of check engine errors related to incorrect temperature readings is minimized.

OEM selection and interchangeable numbers

This sensor model belongs to a group for which the manufacturer has provided specific catalog designations and interchangeable numbers. When selecting parts for a specific vehicle, it is worth using the OEM number or reference numbers and the VIN to confirm full compatibility with the given engine version and model year. This approach minimizes the risk of purchasing a component with different electrical characteristics or a different connector type.

If you want to learn more about selecting used modules and sensors, practical rules for checking compatibility, and installation, check out our guide: Used automotive electronics on board – why is it worth choosing used ECU modules and sensors?

Condition, verification, and practical application

The offered item is in used condition, which, in the case of original Mercedes components, represents a reasonable compromise between cost and quality. Before being put back on sale, such sensors are typically verified for:

• lack of mechanical damage to the housing and connector,
• reading stability within the typical operating temperature range,
• proper electrical contact on the pins.

In many cases, a used factory sensor provides more predictable performance than a cheap replacement with uncertain characteristics. If you are interested in a broader comparison of such solutions, the following article may be helpful: 5 reasons why a used OEM part is a better choice than a replacement.

Intake system expansion and related parts

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional temperature sensors, boost pressure sensors, or airflow measurement components, check the available parts in the Mercedes Air and fuel intake sensors category.

Summary

Mercedes W169 W221 Air Intake Temperature Sensor is a practical solution for users who want to restore the proper operation of the intake system without compromising factory specifications. A properly selected and functional sensor supports stable engine operation, facilitates diagnostics, and allows for maintaining predictable driving parameters in various operating conditions.