Mercedes W169 W204 W211 W212 M272 Engine Camshaft Position Sensor A2729050043

Mercedes W169 W204 W211 W212 M272 Engine Camshaft Position Sensor is a precision engine control component responsible for accurately determining the camshaft position and ensuring proper synchronization of the powertrain. By maintaining factory parameters, this component from the Camshafts group allows for stable engine operation, correct fuel metering, and proper ignition control. This solution is designed for users who expect a proven, original design tailored to the specifics of Mercedes W169 models.

Specifications and technical data

• SKU: A2729050043
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2729050043
• Substitutable numbers: A2729050043, A 272 905 00 43
• Category: Camshafts

Function and importance of the camshaft position sensor

The camshaft position sensor in a Mercedes is responsible for transmitting information about the current position of the camshaft relative to the crankshaft to the engine control unit. Based on this signal, the ECU corrects:

• fuel injection timing,
• ignition timing,
• operation of systems responsible for variable valve timing.

A functional sensor helps reduce misfires, rough idling, and starting problems on a warm engine. Replacing a worn-out part with an original component designed for the Mercedes W169 restores proper timing synchronization and stabilizes engine performance parameters.

Benefits of using an original Mercedes component

Using a sensor dedicated to this series of vehicles ensures proper geometric fit and electrical compatibility with the factory wiring harness. As a result:

• the engine control unit receives a signal with the appropriate characteristics,
• the risk of diagnostic errors related to incorrect camshaft position readings is minimized,
• compatibility with the factory ECU software is maintained.

This solution is particularly important in vehicles where consistency of performance parameters and stability of the timing system are crucial. Choosing an original camshaft position sensor allows you to avoid problems typical of aftermarket replacements with inconsistent signal characteristics.

Purpose and application in the timing system

The offered sensor works with the timing control system in Mercedes W169 vehicles, where it is mounted in the immediate vicinity of the camshaft. Its task is to generate pulses corresponding to the current camshaft position, which enables:

• precise control of valve timing,
• proper synchronization with the crankshaft position sensor,
• maintenance of optimal combustion parameters across the entire rev range.

In the event of symptoms such as starting difficulties, power loss, or a check engine light, checking and potentially replacing the camshaft position sensor is one of the basic diagnostic steps.

Condition and selection of the used part

The presented item comes from dismantling and is classified as a used Mercedes component. This type of part allows for an economical repair while maintaining the original design and fit for a specific engine unit. By choosing a sensor from this offer, you receive a factory solution that has been previously used but is still suitable for further operation after proper installation and verification in the vehicle.

If you are interested in the broader context of operating timing system components and the cost-effectiveness of using parts from dismantling in modern engines, it is worth checking out the material describing typical timing chain problems in another popular engine – details can be found in the article on replacing the BMW N47 timing chain and selecting used parts.

Expansion and modernization of the Mercedes timing system

If you are planning a comprehensive repair or modernization of the engine area in your Mercedes and need other elements from the same group, such as additional camshafts, gears, or phase control elements, check the available parts in the Mercedes Camshafts category.

In a situation where you are repairing an older model and encounter problems with the availability of new components, a guide showing how to effectively use the market for parts from dismantling may also be helpful – more information can be found in the article on repairing older models using used parts.