BMW F45 F46 LCI 220i B48C Twin Clutch Gearbox 7DCT300 AMT 9454505 WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order.

BMW F45 F46 LCI 220i B48C Twin Clutch Gearbox 7DCT300 AMT is an advanced dual-clutch automatic transmission designed for BMW F45/F46 series petrol models after the facelift. Using a gearbox from this series allows for a technically correct replacement of a damaged transmission, ensuring the preservation of factory drivetrain characteristics and consistency with the original powertrain architecture.

Specifications and technical data

• SKU: 9454405
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9454405
• Substitutable numbers: 9454405, 28009454405, 9454505, 28009454505, 9452205, 28009452205
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Automatic Transmission

Technical characteristics of the 7DCT300 AMT gearbox

The presented gearbox belongs to the Automatic transmissions category and is a dual-clutch construction, adapted to work with B48C series petrol engines. The applied automatic gear shifting technology allows for smooth acceleration, reduced torque interruption, and a significantly more dynamic drivetrain response compared to classic torque converter transmissions.

The automatic mode ensures comfort in city traffic, while fast gear changes promote stable highway driving. The gearbox is designed to work with factory BMW control systems, which allows for the maintenance of manufacturer-intended gear shifting strategies, driving modes, and component protection logic.

Application in BMW F45/F46 LCI with B48C engine

BMW F45 F46 LCI 220i B48C Twin Clutch Gearbox 7DCT300 AMT is dedicated to facelifted BMW F45/F46 series models equipped with the B48C petrol engine. This makes it possible to restore the factory drivetrain configuration without the need for structural vehicle modifications. Proper matching of the transmission to the specific engine and body version is crucial for the correct operation of electronic systems, including the transmission control unit, safety systems, and driver assistance functions.

Before installation, it is recommended to verify compatibility with the specific vehicle equipment version and control software to ensure full integration with the electrical system and control modules in the given BMW unit.

Benefits of installing a used automatic transmission

Choosing a used transmission from the Automatic transmissions category allows for a significant reduction in repair costs compared to purchasing a brand-new component, while maintaining the original design and performance parameters. This type of solution is particularly beneficial in the case of mechanical failure or internal damage, where repairing the existing gearbox would be unprofitable or technically difficult.

The main advantages of installing this unit include:

• preservation of factory gear shifting characteristics in BMW F45/F46 LCI vehicles,
• possibility to restore full drivetrain functionality without structural modifications,
• compatibility with B48C series petrol engines and factory control systems,
• reduction of vehicle downtime due to the replacement of the complete gearbox.

Condition, verification, and installation aspects

The offered gearbox comes from the secondary market and is a used item, which in practice means the necessity of professional assessment before installation regarding tightness, mechanical play, and potential replacement of consumables. It is recommended to perform the installation in a specialized service center that has the appropriate facilities for servicing BMW automatic transmissions and the ability to perform adaptations and diagnostic procedures after installation.

Proper system bleeding, the use of appropriate transmission oil, and the execution of controller adaptation procedures have a direct impact on the gearbox's operating culture, smoothness of gear changes, and the durability of the entire drivetrain.

Technical support and additional information

If you are considering installing a used transmission in your BMW and want to consciously evaluate the cost-effectiveness of such a solution, compatibility issues, and the differences between manual and automatic gearboxes, it is worth checking out the guide: Used gearbox – when is it worth it and what you need to remember. The article discusses key aspects of selecting and operating gearboxes from the secondary market.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as gearboxes with different configurations, units for other models, or alternative automatic variants, check the available parts in the BMW automatic transmissions category.