Flywheel Ring Mercedes W204 W207 W212 OM651 Diesel Automatic Gearbox A6510300812

Flywheel Ring Mercedes W204 W207 W212 OM651 Diesel Automatic Gearbox is an original component from the Flywheels and gears group, designed for OM651 diesel units with an automatic transmission. A used component of this type allows for a technically correct repair of the drivetrain while maintaining the factory performance characteristics of the engine and transmission.

Specifications and technical data

• SKU: A6510300812
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510300812
• Substitutable numbers: A6510300812, A 651 030 08 12, 16510300812
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Flywheels & Flexplates

Purpose and function of the flywheel

The flywheel in the OM651 diesel engine is responsible for stabilizing engine speed, damping torsional vibrations, and correctly transmitting torque to the automatic transmission. In diesel units, this is particularly important for smooth operation, noise reduction, and protecting transmission components from excessive loads.

Selecting the correct flywheel for a specific drivetrain configuration is crucial for maintaining proper starter system operation, smooth gear shifting, and the durability of the entire powertrain. Using an original component dedicated to the OM651 allows for maintaining the parameters specified by the vehicle manufacturer.

Compatibility with diesel engine and automatic transmission

The presented flywheel has been designed to work with a diesel engine, which means it features appropriately selected mass, damping characteristics, and geometry that works with the starter and torque converter. This makes it possible to maintain stable idle speeds and predictable response to load.

Adaptation for an automatic transmission means a design optimized for cooperation with the torque converter, correct placement of mounting points, and appropriate rigidity. This has a direct impact on the smoothness of starting, gear shifting, and limiting unwanted vibrations transmitted to the body.

Application in Mercedes W204 and W212 models

The flywheel is intended for drivetrains used in Mercedes C-Class W204 and E-Class W212 models with the OM651 engine and automatic transmission. Proper fitment for a specific vehicle version should always be confirmed based on the OEM part number and interchangeable numbers, which helps avoid installation issues and ensures compliance with factory specifications.

When replacing a component in an existing drivetrain, it is particularly important to compare the parameters with the currently installed flywheel to ensure correct cooperation with the starter, ring gear, and automatic transmission accessories.

Characteristics of the used component

As a part from the secondary market, the flywheel offers a favorable cost-to-functionality ratio while maintaining the original design intended by the vehicle manufacturer. A used component of this type is a good solution in situations where the priority is to restore the efficiency of the drivetrain within a controlled service budget.

Before installation, it is recommended to perform a standard verification of the condition of the working surfaces, the ring gear, and the mounting points, as well as to assess any potential wear in the context of the vehicle's intended use.

Support with selection and additional information

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other elements from the same group, such as gears, additional flywheels, or related components working with the transmission, check the available parts in the Mercedes flywheels and gears category.

For those considering the use of secondary market components in upgrade projects or when building a more dynamic drivetrain configuration, valuable tips on selecting and safely using used subassemblies can be found in the article The best used parts for tuning your car.