Mercedes W166 Pressure Sensor MAP Manifold A1669050500

The Mercedes W166 Intake Manifold Boost Pressure Sensor (MAP) is a component from the Air and Fuel Intake Sensors group, responsible for precise manifold pressure measurement and stable engine operation. An original Mercedes component ensures proper interaction with the factory engine control unit, translating into predictable performance and correct fuel dosage.

Specifications and technical data

• SKU: A1669050500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669050500
• Substitutable numbers: A1669050500, A 166 905 05 00
• Category: Air Intake & Fuel Sensors

Function and Role of the MAP Sensor in the Mercedes W166

The Manifold Absolute Pressure (MAP) sensor in the Mercedes W166 is responsible for measuring the pressure of air drawn into the engine. Based on this data, the engine control unit determines the fuel dosage, ignition timing, and boost system operating strategy. A functional sensor helps reduce power loss, rough idling, and excessive fuel consumption.

Replacing a worn or damaged sensor with an original component from the same group restores stable engine operating parameters, improves throttle response, and reduces the risk of the unit entering limp mode.

Benefits of Using an Original Mercedes Sensor

Using a component from the Mercedes offering means maintaining factory measurement characteristics and proper interaction with the control unit's software. This ensures:

• the control unit receives reliable data on intake manifold pressure,
• the injection system can precisely dose fuel,
• the risk of errors related to the mixture and boost pressure is reduced,
• the engine operates within stable, predictable parameter ranges.

A component from the Air and Fuel Intake Sensors category is particularly important in turbocharged vehicles, where accurate pressure measurement affects the thermal and mechanical safety of the powertrain.

Condition, Selection, and Installation of the Sensor

The offered sensor is in Used condition, meaning it comes from a dismantled vehicle and is intended for users seeking an economical solution while maintaining original manufacturer specifications. This type of component is particularly attractive for maintenance repairs where a favorable cost-to-functionality ratio is important.

When selecting a sensor for a specific vehicle, it is advisable to base your choice on the OEM part number or interchangeable numbers, as well as vehicle data (model, year, engine version). A correctly selected component from this group allows for installation without modifications to the wiring, maintaining the factory mounting method and electrical connector.

Integration with the Intake and Fuel System

A functional MAP sensor works in conjunction with other components of the intake and fuel system, such as the mass airflow sensor, injectors, and fuel pump. In cases of fuel delivery issues, smoking, or power loss, diagnostics should also include this component. For a deeper understanding of the relationship between air measurement and fuel delivery, it is recommended to read the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair, which discusses diagnostics and component selection by OEM numbers.

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

Ecological and Operational Aspect

Choosing a used sensor from dismantling aligns with an approach that reduces waste and utilizes the potential of parts with preserved functionality. This solution lowers repair costs while simultaneously reducing the demand for new component production. If you are interested in the broader context of using recycled parts to improve performance and reduce carbon footprint, the material Eco-Tuning in Practice: How to Increase Performance While Reducing Carbon Footprint with Recycled Parts may be helpful.