Gearbox Flywheel Mercedes R170 M111.973 Starter Ring A1110300712

Gearbox Flywheel Mercedes R170 M111.973 Starter Ring is a precision drivetrain component, specifically designed for the M111.973 unit in R170 series models. It is responsible for the stable transfer of engine torque to the gearbox, ensuring smooth operation of the drivetrain and predictable vehicle behavior. By using an original component from the Flywheels and gears group, you maintain the factory performance parameters of the drivetrain.

Specifications and technical data

• SKU: A1110300712
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1110300712
• Substitutable numbers: A1110300712, A 111 030 07 12
• Category: Flywheels & Flexplates

Technical characteristics and intended use

The presented flywheel is a component dedicated to the M111.973 engine in the R170 body, which means it is perfectly matched to the specific configuration of the powertrain and clutch system. The design of the flywheel provides the appropriate inertia necessary for stabilizing idle speed and smooth acceleration, as well as proper interaction with the clutch disc and pressure plate.

A properly selected flywheel affects:

• engine refinement across the entire rev range,
• smoothness of starting and gear shifting,
• reduction of vibrations transmitted to the gearbox,
• durability of clutch components.

Benefits of using an original Mercedes flywheel

Using an original flywheel in the Mercedes R170 with M111.973 engine drivetrain allows you to maintain the factory performance parameters of the powertrain. The geometry, mass, and balancing method are adapted to the specific engine, which minimizes the risk of unwanted torsional vibrations and premature clutch wear.

Key advantages include:

• Structural compatibility – matched to the specific engine variant and drivetrain.
• Stable clutch system operation – predictable engagement and disengagement of the drive.
• Better gearbox protection by reducing shocks and jerks.
• Ability to maintain stock engine control unit settings without the need for modifications.

Component condition and use in service and tuning

The flywheel comes from a group of used parts, making it an attractive solution for maintenance repairs and modernization projects where a reasonable budget is important while maintaining original specifications. This type of component is often chosen both by workshops specializing in the Mercedes brand and by enthusiasts servicing their vehicles themselves.

In the case of light mechanical tuning or refreshing the drivetrain in an R170, using a verified flywheel allows you to maintain proper engine performance while reducing costs compared to new parts. For those interested in broader use of aftermarket components in modification projects, it is worth reading the article The best used parts for tuning your car, which discusses a practical approach to selecting used elements.

Selection, installation, and integration with the drivetrain

When selecting a flywheel for a Mercedes R170 with the M111.973 unit, it is crucial to verify compatibility with the specific engine and gearbox configuration. The original component from the Flywheels and gears group facilitates installation because it retains factory mounting points and the manufacturer-intended method of interaction with other clutch elements.

During installation, it is recommended to:

• thoroughly clean the contact surfaces with the crankshaft and clutch disc,
• check the condition of the starter ring gear,
• use the correct tightening torques for the mounting bolts,
• check the system balance after installation, if required by the service procedure.

Expanding the drivetrain within the same group

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 gears, components interacting with the starter, or parts related to the clutch system, check the available parts in the Mercedes flywheels and gears category.