Mercedes W163 W203 C209 W211 C219 Air Flow Mass Meter Sensor Unit A1130940048

Mercedes W163 W203 C209 W211 C219 Air Flow Mass Meter Sensor Unit is an original component from the Air and fuel intake sensors group, designed for precise measurement of the intake air volume in selected Mercedes models. It enables stable engine operation, correct fuel dosing, and predictable throttle response, which translates into smoother vehicle operation.

Specifications and technical data

• SKU: A1130940048
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1130940048
• Substitutable numbers: A1130940048, A 113 094 00 48, 0280217810, 0 280 217 810
• Category: Air Intake & Fuel Sensors

Function and role of the air flow meter in a Mercedes engine

The air flow meter in this configuration is responsible for measuring the mass of air drawn through the intake system, which is crucial for the engine control unit to correctly calculate the fuel dose. A properly functioning sensor helps reduce excessive fuel consumption, lowers the risk of excessive exhaust smoke, and supports smooth engine operation at idle and under load.

Thanks to the use of a dedicated solution for specific Mercedes generations, the engine control system can operate within a stable correction range, which facilitates diagnostics, adaptation, and subsequent vehicle operation after replacing the component.

Compatibility with Mercedes W163, W203, C209, W211, C219 models

The presented air flow meter is intended for selected versions of Mercedes M-Class, C-Class, CLK, E-Class, and CLS models marked with the symbols W163, W203, C209, W211, and C219. Proper fitment for a specific engine configuration should always be verified based on the OEM part number or interchangeable numbers in the manufacturer's catalog or via the VIN.

This approach minimizes the risk of installing an incorrect component, ensures proper cooperation with the factory engine control unit, and limits the need for additional modifications to the electrical installation or the intake system.

Characteristics of the used component

The offered air flow meter is an aftermarket component, which allows for economical repair of the intake system while maintaining the original manufacturer's specifications. A used component of this type is particularly attractive for older Mercedes generations, where the availability of new parts can be limited or cost-ineffective.

Choosing an original, used sensor with the factory design preserved often ensures better parameter repeatability than cheap replacements of unknown origin, which is important for engine stability and proper cooperation with other fuel system components.

Benefits of using a dedicated air flow meter

Using the correct air flow meter in a Mercedes from the W163, W203, C209, W211, or C219 series can bring a number of practical benefits:

• more predictable throttle response thanks to accurate air mass measurement,
• reduction of issues with fluctuating RPM and engine stalling at idle,
• more stable operation of the injection system under various loads,
• easier computer diagnostics thanks to correct sensor reading values.

For vehicles with high mileage, replacing a worn-out air flow meter with a functional unit is one of the basic steps when troubleshooting issues with rough engine operation, power loss, or increased fuel consumption.

Technical support and selection by part numbers

When selecting an air flow meter for a specific Mercedes, it is worth using the OEM part number and interchangeable numbers, as well as data from the manufacturer's catalogs. This helps avoid mistakes resulting from differences between engine versions, model years, or target markets. In case of doubt, a good solution is to compare the markings on the removed component with the data in the product specification.

To better understand the relationship between air flow and fuel dosing, as well as the role of sensors in the fuel system, it is worth reading the article describing the diagnostics and operation of the fuel system: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Mercedes air and fuel intake sensors – expansion and modernization

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

Owners of older Mercedes generations, often treated as youngtimers, can additionally benefit from practical tips on using aftermarket components in the vehicle refreshment process – this is described in more detail in the guide: The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.