Mercedes W176 W204 W205 C207 W212 Crankshaft Ring Wheel A2700320347

Mercedes W176 W204 W205 C207 W212 Crankshaft Pulses Wheel is a precise component of the crankshaft system, responsible for accurately reflecting the shaft's position in the engine. An original Mercedes component ensures stable cooperation with the crankshaft position sensor, which translates to correct ignition and injection synchronization and smooth engine operation. A used part from the Crankshafts group is a solution that allows for technical repair without the need to resort to more expensive replacements.

Specifications and technical data

• SKU: A2700320347
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2700320347
• Substitutable numbers: A2700320347, A 270 032 03 47
• Category: Crankshafts

Purpose and Function in the Engine

The crankshaft pulses wheel in Mercedes A-Class, C-Class, E-Class models, and coupe body styles from the W176, W204, W205, C207, and W212 series is responsible for generating a reference signal for the engine control unit. Based on the pulses from this component, the control unit determines:

• the exact position of the crankshaft in each operating cycle,
• the injection timing,
• the ignition timing and advance angle,
• idle stabilization and smooth acceleration.

A functional pulses wheel is crucial to avoid problems with starting, misfires, or uneven engine operation, therefore its correct selection for a specific engine unit is of significant service importance.

Advantages of Using an Original Mercedes Component

Choosing an original pulses wheel from the Crankshafts group allows you to maintain the engine's factory operating parameters. The component has been designed for:

• precise arrangement of teeth and notches cooperating with the crankshaft position sensor,
• appropriate stiffness and resistance to torsional loads,
• dimensional stability under variable operating temperatures,
• correct fit on the crankshaft journal.

Thanks to this, the engine control unit receives a repeatable, clear signal, which reduces the risk of diagnostic errors and incorrect operation of the injection system. Original manufacturing also facilitates installation – no need for additional adjustments or modifications.

Condition, Verification, and Service Application

The offered component is used, which allows for economical repair while retaining a component from the original Mercedes production line. Before installation, standard service inspection is recommended, including:

• checking the tooth edges for mechanical damage,
• verifying the surfaces cooperating with the crankshaft,
• checking for any signs of corrosion in the sensor's working area.

A component prepared in this way can be used both for routine repairs and for comprehensive engine rebuilds, when replacement of components cooperating with the crankshaft position sensor is necessary.

Support in Selection and Compatibility

To ensure full compatibility with a specific engine version and vehicle year, it is advisable to verify the markings based on the OEM number and interchangeable numbers assigned to this pulses wheel. This helps to avoid installation problems and errors in the engine control unit's operation after the vehicle is started. If in doubt, it is recommended to compare the part with the one removed from the car or consult a mechanic specializing in the Mercedes brand.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as flywheels, crankshaft journals, or other components cooperating with the connecting rod, check the available parts in the Mercedes Crankshafts category.

For a better understanding of how to select used components for engine control systems, including the importance of OEM numbers and compatibility between different versions, it is worth reading the Global Parts guide: Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?.