Automatic Flywheel BMW F10 F20 F21 F30 F31 N20 Engine Ring 7585146

BMW F10 F20 F21 F30 F31 N20 Automatic Flywheel is an original part from the Flywheels & Gears group, designed to work with the N20 engine and automatic transmission in popular BMW 3 and 5 Series models. This used OEM component ensures proper torque transfer, stable drivetrain operation, and maintains factory ride comfort parameters.

Specifications and technical data

• SKU: 7585146
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7585146
• Substitutable numbers: 11227585146, 7585146, EM
• Gearbox type: Automatic
• Category: Flywheels & Flexplates

Application and Compatibility

The presented flywheel is dedicated to N20 units installed in BMW F10, F20, F21, F30, and F31 models equipped with an automatic transmission. Using an original part from the same design family allows for correct interaction with the torque converter, starter, and other drivetrain components.

By maintaining factory geometry and operating parameters, the flywheel helps reduce torsional vibrations, improves engine running smoothness, and supports seamless gear changes in the automatic transmission.

Technical and Functional Characteristics

The flywheel in this series is designed to work with an automatic transmission, which means it has appropriately selected mass, balancing, and surfaces interacting with the torque converter. The construction ensures:

• stabilization of idle and acceleration RPMs,
• proper damping of vibrations generated by the N20 engine,
• correct engagement with the starter ring gear,
• maintenance of factory starting and vehicle launch characteristics.

A used OEM part is a solution that maintains the integrity of the entire drivetrain without the need for aftermarket replacements with uncertain parameters.

Condition, Origin, and Benefits of Use

The flywheel is a used part from disassembly, offering an attractive cost while retaining the original manufacturer's specifications. This type of component is particularly recommended for:

• drivetrain repairs after an automatic transmission failure,
• comprehensive servicing of the N20 engine after higher mileage,
• restoring factory operating parameters after unsuccessful modifications.

Using an original flywheel helps reduce the risk of improper balancing, excessive vibrations, and accelerated wear of cooperating parts, leading to more predictable operation.

Application in Tuning and Upgrades

For projects where the N20 engine undergoes software or mechanical modifications, maintaining a suitable flywheel is crucial for drivetrain durability. A used, original part from the same BMW model family helps maintain proper loads for the automatic transmission and avoid issues with excessive vibrations.

If you are considering upgrading or tuning your BMW and want to consciously select used components, it's worth reading the advice in the article Best Used Parts for Your Car Tuning, which discusses practical aspects of selecting parts from disassembly.

BMW Drivetrain Expansion

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other parts from the same group, such as additional flywheels, cooperating gears, or related drivetrain components, check the available parts in the BMW Flywheels & Gears category.