BMW F30 335dX F32 435dX LCI N57Z Automatic Gearbox GA8HP70X 8742500 WARRANTY

Listing details

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

BMW F30 335dX F32 435dX LCI N57Z Automatic Gearbox GA8HP70X is a factory-original, used transmission from the Automatic gearboxes family, designed for BMW vehicles with diesel engines. The automatic design ensures smooth gear shifting, high drivetrain refinement, and comfortable operation in daily driving as well as under higher loads.

Specifications and technical data

• SKU: 8742500
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8742500
• Substitutable numbers: 8742500
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Application and compatibility with BMW F30 335dX / F32 LCI N57Z

The described gearbox has been designed to work with the N57Z diesel unit in BMW 3 Series F30 335dX and 4 Series F32 LCI models. This ensures a perfect match in terms of torque characteristics, control systems, and xDrive drivetrain architecture. The automatic design of the transmission allows for efficient power transfer across a wide range of loads, which translates into stable acceleration, predictable downshifts, and comfortable driving in both city traffic and on the highway.

Technical characteristics and operation of the automatic transmission

The automatic transmission in this BMW model has been developed with dynamic yet economical diesel engines in mind. The use of advanced hydraulic-electronic control enables:

• precise adjustment of gear shift timing to the driver's driving style,
• efficient downshifts during overtaking and acceleration,
• maintaining optimal diesel engine RPM to reduce fuel consumption.

As a result, the drivetrain maintains consistent performance – from starting off, through highway driving, to maneuvering in tight spaces. Automatic control minimizes the risk of errors resulting from improper gear selection, which is particularly important given the high torque of the N57Z unit.

Benefits of installing a used GA8HP70X gearbox

Using an original, used automatic gearbox in a BMW F30 335dX or F32 LCI N57Z is a solution that allows you to maintain the vehicle's factory handling characteristics. Compared to replacements or adaptations of other transmissions, installing the correct model ensures:

• compatibility with the vehicle's factory control software,
• proper cooperation with the all-wheel-drive system and electronic stability control systems,
• consistent operation of driving modes (both comfort and more dynamic ones),
• reduced risk of communication issues between vehicle control units.

For the user, this means predictable car behavior, maintained gear-shifting comfort, and proper utilization of the diesel engine's potential. A properly selected automatic transmission is crucial for the durability of the entire drivetrain.

Selection, verification, and technical support

When selecting this transmission for a specific BMW vehicle, it is worth paying attention to compatibility with the vehicle configuration, engine type, and installed equipment. The product has assigned part numbers and interchangeable numbers, which facilitates clear identification and comparison with service documentation. In case of doubt, consultation with a mechanic or technical advisor is recommended to confirm compatibility with the specific VIN.

To better understand the differences between transmissions and to make an informed decision when purchasing a used gearbox, it is worth reading our guide: Gearbox: manual, automatic, or DSG – common faults and a guide to buying a used transmission. The article discusses the characteristics of different types of transmissions, common symptoms of wear, and practical tips regarding installation and operation.

Drivetrain upgrades in BMW – Automatic gearboxes

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 torque converters, control elements, or additional transmission sub-assemblies, check out the available parts in the BMW automatic gearboxes category.