Mercedes W169 W245 OM640 M266 Gearbox Flywheel Starter Ring A2660300012

Mercedes W169 W245 OM640 M266 Gearbox Flywheel Starter Ring is a precision drivetrain component designed for select Mercedes compact class models. This used, original component from the Flywheels and gears category ensures proper interaction with the starter motor and stable operation of the powertrain, which translates into smoother engine performance and more reliable starts.

Specifications and technical data

• SKU: A2660300012-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2660300012
• Substitutable numbers: A2660300012, A 266 030 00 12
• Category: Flywheels & Flexplates

Purpose and function in the drivetrain

The presented flywheel with starter ring is designed to work with the OM640 and M266 engine families in Mercedes W169 and W245 models. The component is responsible for storing the kinetic energy of the crankshaft, stabilizing engine speed, and transferring torque to the clutch system or gearbox. The integrated starter ring enables proper engagement with the starter motor gear, which is crucial for reliable engine starting under various operating conditions.

A properly selected flywheel reduces torsional vibrations, improves idle smoothness, and decreases the load transferred to other drivetrain components. The correct geometry of the starter ring is essential for the durability of the starter motor and the comfort of daily vehicle operation.

Advantages of using an original Mercedes component

The original flywheel with starter ring from Mercedes ensures factory-fit compatibility with specific engine and gearbox configurations. This maintains dimensional compliance, the correct tooth profile of the ring, and mass parameters, all of which have a direct impact on the engine's performance. Compared to aftermarket replacements, the original component minimizes the risk of starting issues, improper engagement, or premature wear of mating parts.

A used, verified component of this type is an attractive solution for maintenance repairs, especially when the goal is to maintain factory engine characteristics while optimizing costs. It is a sensible choice both for standard replacement of a worn flywheel and for repairs following mechanical damage to the starter ring.

Professional use in service and repairs

The flywheel with starter ring dedicated to the Mercedes W169 and W245 is suitable for professional workshops servicing compact models of this brand, as well as services specializing in the repair of OM640 and M266 units. The component is suitable for use when:

• replacing a worn or damaged starter ring causing starting problems,
• performing an engine overhaul, where comprehensive drivetrain maintenance is recommended,
• repairing damage after a starter motor failure that may have led to damage to the ring teeth,
• working on the clutch when excessive signs of wear are found on the flywheel's working surface.

Thanks to the preservation of factory specifications, installation is predictable, and after proper fitting, you can expect stable drivetrain operation without the need for additional modifications.

Condition and benefits of choosing a used component

The presented item comes from the used parts group, which allows for a significant reduction in repair costs while maintaining original build quality. For many users and workshops, this is a beneficial solution in situations where a brand-new component is difficult to obtain or economically unjustified. Choosing a used flywheel with a starter ring is particularly sensible for repairs of older Mercedes W169 and W245 vehicles, where the priority is reliability and technical compatibility rather than installing brand-new parts.

A properly selected element from this group helps restore correct operating conditions for the starter and drivetrain, reducing the risk of further damage resulting from improper engagement or excessive vibrations.

Upgrade expansion – Mercedes flywheels and gears

If you are planning a comprehensive repair or upgrade of your Mercedes engine area and need other components from the same group, such as additional gears, starter-mating parts, or other flywheels, check out the available parts in the Mercedes flywheels and gears category.

Expert support and tuning with used parts

For users considering drivetrain modifications or the conscious selection of used components, a valuable source of knowledge is an article describing a practical approach to selecting salvaged parts, their impact on vehicle characteristics, and economic aspects. You can find more on this topic in the material: The best used parts for tuning your car.