Mercedes W204 W211 W212 W906 Fuel Pressure Rail Sensor A0045421618

The Mercedes W204 W212 W906 Fuel Pressure Sensor is an original fuel system component designed for precise fuel pressure control in selected Mercedes models. This used sensor, from the injector nozzles category, enables a technical, economical, and factory-compliant repair of the injection system.

Specifications and technical data

• SKU: A0045421618
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0045421618
• Substitutable numbers: A0045421618, A 004 542 16 18
• Category: Fuel Injectors

Purpose and Role in the Injection System

The Mercedes W204 W212 W906 Fuel Pressure Sensor operates at a critical point in the fuel system, transmitting information about the current pressure on the fuel rail to the engine control unit. A properly functioning component:

• stabilizes injector operation across the full range of engine loads,
• reduces the risk of power loss and jerking during acceleration,
• helps maintain the correct mixture composition, contributing to smoother engine operation.

Selecting a sensor compatible with the Mercedes injection system is crucial for accurate diagnostics and subsequent vehicle operation.

Application in Mercedes Vehicles

The presented component is designed for selected models of the Mercedes W204, W212, and W906 series, where the injection system requires precise fuel pressure measurement on the rail. Installing the correct sensor is particularly important in vehicles used in:

• urban conditions, where frequent starts and short distances put a strain on the injection system,
• long-distance highway driving, requiring stable fuel pressure under constant load,
• commercial applications, where the reliability of the fuel system translates to continuous vehicle operation.

A properly selected sensor helps limit secondary damage to components such as injectors or the high-pressure pump.

Benefits of Using an Original Sensor

Choosing an original fuel pressure sensor from the injector nozzles group offers a range of practical service and operational benefits:

• Factory operating characteristics – compatibility with engine control unit maps reduces the need for additional adaptation.
• Correct geometry and threads – facilitate installation in the fuel rail and ensure proper sealing of the connection.
• Stable measurement signal – promotes precise fuel dose regulation and correct injector correction operation.
• Better interaction with the diagnostic system – simplifies data interpretation from testers and speeds up fault detection.

By maintaining factory parameters, the sensor supports predictable vehicle behavior under various load and temperature conditions.

Component Condition and Installation Aspects

The offered sensor is a used part, which allows for reduced repair costs while maintaining the original manufacturer's specifications. Before installation, it is recommended to:

• verify the seal of the socket in the fuel rail,
• check the electrical wiring for contact corrosion and cable damage,
• perform adaptation or clear errors in the engine control unit after replacing the component.

A correctly performed sensor replacement is an important step in comprehensive service of the injection system in Mercedes vehicles.

Diagnostics and Prevention for the Injection System

Incorrect fuel pressure sensor readings often occur alongside injector problems. It is worth familiarizing yourself with practical tips regarding the symptoms and consequences of neglecting this area – the article Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails discusses these in detail. This knowledge helps to better plan diagnostics and determine the scope of repairs.

Related Mercedes Injector Nozzles

If you plan to replace other components during fuel system service, it is worth considering selecting compatible Mercedes injector nozzles. Check the Mercedes injector nozzles available in our assortment to assemble a set of parts tailored to the specific model and engine version.