Mercedes W203 W204 Fuel Regeneration Valve Pump Purge Solenoid A0004701693

Mercedes W203 W204 Fuel Regeneration Valve Pump Purge Solenoid is a specialized fuel system component designed for Mercedes vehicles with gasoline engines. It is responsible for precise vacuum control within the fuel system, which promotes stable engine operation and proper interaction with auxiliary equipment. This used OEM component is a sensible choice for drivers looking for a technically verified solution at an attractive price.

Specifications and technical data

• SKU: A0004701693
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0004701693
• Substitutable numbers: A0004701693, A 000 470 16 93
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and function of the vacuum valve

The presented vacuum valve operates within the gasoline supply system, supporting the proper functioning of components responsible for fuel metering and pressure control. Stable vacuum control helps maintain smooth engine operation, reduce idle fluctuations, and ensure predictable response to load.

Thanks to a design consistent with factory standards for Fuel pumps and level sensors in Mercedes cars, the valve works with the original installation without the need for wire modifications or additional adapters. This solution is particularly beneficial for vehicle servicing where compliance with manufacturer parameters is crucial.

Benefits of using an original Mercedes component

Choosing an original vacuum valve for W203 and W204 models allows you to maintain the integrity of the entire fuel system. A component designed for a specific chassis platform and fuel type ensures:

• proper fitment to factory mounts and vacuum lines,
• correct cooperation with the engine control system,
• preservation of the operating characteristics intended by the vehicle manufacturer.

For workshops and private users, this means a lower risk of adjustment problems, easier diagnostics, and the ability to quickly verify proper operation based on Mercedes service data. A used OEM component often proves to be more predictable than aftermarket replacements of inconsistent quality.

Technical characteristics in the context of the fuel system

The vacuum valve works with the gasoline supply system, where maintaining proper pressure differentials between the manifold, fuel lines, and control elements is essential. A properly functioning valve:

• stabilizes the operating conditions of the fuel pump and related sensors,
• reduces the risk of uneven engine operation during load changes,
• supports correct readings of fuel level and pressure sensors.

As a result, the system reacts predictably to changes in driving mode, and the diagnosis of potential faults is simpler because operating parameters remain within the range specified by the manufacturer. This is particularly important in modern units where many functions are supervised by engine electronics.

Condition, installation, and service application

The offered valve is a used item, making it an interesting alternative for repairs where the cost-to-functionality ratio is important. For workshops specializing in the Mercedes brand, this is a practical solution for comprehensive fuel system maintenance in W203 and W204 models, especially when replacing multiple components at once.

Due to its factory origin, installation usually comes down to removing the old component and installing the new one at the same mounting points, while maintaining proper routing of vacuum lines. It is recommended to perform basic engine parameter diagnostics after installation to confirm the proper operation of the entire system.

Selection support and additional materials

When selecting used control elements and sensors in the fuel system, it is worth paying attention to the compatibility of markings and vehicle configuration. Detailed tips on selecting used modules and components, including rules for selection by manufacturer markings and practical application examples, can be found in our guide: Used automotive electronics – ECU modules and second-hand sensors.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other elements from the same group, such as a supply pump, fuel level sensor, or additional control elements, check the available parts in the category Mercedes fuel pumps and level sensors.