Mercedes W164 W204 W211 W212 W639 Crankshaft Position Sensor A0041538728

The Mercedes W164 W204 W211 W212 Crankshaft Position Sensor is a precise engine control system component responsible for accurately determining the position and rotational speed of the crankshaft. A properly functioning sensor ensures stable engine operation, correct fuel delivery, and proper ignition timing. By choosing this part, you opt for an original solution tailored to specific Mercedes models, which simplifies diagnostics and installation.

Specifications and technical data

• SKU: A0041538728
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0041538728
• Substitutable numbers: A0041538728, A 004 153 87 28
• Category: Other Car Parts & Accessories

Purpose and Role in the Engine Control System

The crankshaft position sensor in Mercedes W164, W204, W211, and W212 models is a key element that collaborates with the engine control module. Based on the signal from this sensor, the control unit determines, among other things, the fuel injection timing and ignition advance angle, as well as monitors the engine's rotational speed.

In practice, a functional sensor influences:

• easy engine starting, both cold and warm,
• stable idle speed,
• smooth acceleration without jerking,
• proper cooperation with safety and comfort systems dependent on engine operating parameters.

Compatibility with Mercedes Models

The presented sensor is designed for use in selected body and engine variants of the Mercedes W164, W204, W211, and W212 series. This ensures that the user receives a component structurally matched to the factory engine equipment, which reduces the risk of installation problems and incorrect operation after installation.

Its original origin from the Mercedes group allows for consistency with the factory engine control unit software, which is particularly important for advanced diagnostic and adaptive systems.

Characteristics and Benefits of Use

As a component from the Mercedes group, the crankshaft position sensor has been designed for long-lasting, repeatable operation under the demanding thermal and mechanical conditions of the engine bay. The construction is resistant to vibrations, temperature changes, and contaminants typical of the engine environment.

The main benefits of using this sensor include:

• maintaining engine operating parameters in line with manufacturer specifications,
• easier computer diagnostics due to the original signal type,
• reducing the risk of control unit errors related to incorrect crankshaft position readings,
• the ability to restore proper engine operation after a previous sensor failure.

Component Condition and Service Application

The offered sensor is a used part from the aftermarket, allowing for economical vehicle repair while maintaining original manufacturer specifications. This type of solution is often chosen in professional workshops specializing in the Mercedes brand, where both technical compliance and cost optimization are important.

Before installation, standard service procedures are recommended, including checking the wiring harness, connectors, and reading any potential engine control unit errors, to fully utilize the potential of the newly installed sensor.

System Expansion and Selection of Related Components

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 sensors, wiring harnesses, or mounting parts, check the available parts in the Other Mercedes category.

For users interested in comparing solutions used in different brands and sports segments, it is worth familiarizing yourself with the analysis of powertrains and equipment in high-performance cars – a detailed discussion can be found in the article Audi RS vs. Other Models – What's Under the Hood and Chassis?, which helps to better understand the importance of precise sensors and electronics in modern designs.

Summary

The Mercedes W164 W204 W211 W212 Crankshaft Position Sensor is a functional choice for users seeking an original solution to restore proper engine operation. Using a dedicated sensor helps reduce problems with starting, unstable RPMs, or control unit errors, while maintaining compatibility with the vehicle's factory electrical architecture. It is a practical proposition for both workshops specializing in the Mercedes brand and for discerning users who independently maintain their car's technical condition.