Mercedes-Benz A B Class W176 W246 Bracket Holder Air Quality Sensor A2468300302

Mercedes-Benz A B Class W176 W246 Bracket Holder Air Quality Sensor is an original intake system component from the Air and fuel intake sensors group, designed for vehicles with diesel engines. It ensures precise measurement of the air parameters drawn by the diesel engine, which translates into stable engine operation and correct fuel dosing.

Specifications and technical data

• SKU: A2468300302
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2468300302
• Substitutable numbers: A2468300302, A 246 830 03 02
• Fuel type: Diesel
• Category: Air Intake & Fuel Sensors

Purpose and function in the intake system

The air sensor in Mercedes compact class models is responsible for monitoring the conditions of the air drawn into the diesel engine and transmitting this data to the engine control unit. Based on this, the ECU selects the appropriate fuel dose, corrects the injection timing, and adjusts the turbocharger operation strategy, which allows for maintaining stable RPM, proper engine refinement, and predictable throttle response.

A properly functioning sensor from this group of components reduces the risk of smoke, power loss, and increased fuel consumption. It is particularly important in modern diesel units, where the intake and fuel systems are closely linked.

Benefits of using an original Mercedes sensor

Using an original air sensor in a diesel system ensures:

• accurate reproduction of factory parameters and proper cooperation with the engine control unit software,
• consistency with the logic of the injection system and exhaust emission control systems,
• reduced risk of diagnostic errors and warning lights appearing,
• more predictable vehicle behavior under load, including during acceleration and highway driving.

Thanks to this, the sensor from the Air and fuel intake sensors category is a sensible choice for intake system repairs in Mercedes cars with diesel engines, especially when maintaining factory performance parameters is a priority.

Component condition and installation aspects

The offered sensor is a used part, which in practice means the possibility of an economical repair of the intake system while maintaining the manufacturer's original specification. This type of component is usually installed in a plug-and-play manner – after matching it to the specific engine version and electrical installation, a direct replacement of the damaged sensor is possible.

Before installation, a standard service procedure is recommended: checking the connectors, the electrical harness, and the tightness of the intake system. After replacement, it is worth performing a computer diagnostic to confirm correct parameter readings and, if necessary, clear previously stored errors.

Connection to the diesel fuel system

In diesel engines, data from the air sensor is directly used by the controller to manage the injection system. Incorrect readings can lead to improper fuel dosing, which manifests as power loss, increased diesel consumption, or uneven engine operation. Therefore, when diagnosing fuel system problems, it is worth considering the condition of sensors from the air intake group as well.

If you want to better understand the relationships between sensors, injectors, and the high-pressure pump, the following guide will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. You will find practical tips on diagnostics and selecting components by OEM numbers.

Expanding repairs within the intake system

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 air sensors, flow measurement elements, or components cooperating with the fuel system, check the available parts in the Mercedes air and fuel intake sensors category.