Automatic Gearbox BMW E38 728i E39 528i M52 A5S310Z 1422029 WARRANTY

Listing details

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

Automatic Gearbox BMW E38 728i E39 528i M52 A5S310Z 1422029 WARRANTY is an original, used automatic transmission from the Automatic gearboxes group, designed to work with the M52 engine in high-end BMW models. It provides a solid foundation for professional drivetrain repair, ensuring factory fitment and predictable powertrain performance.

Specifications and technical data

• SKU: 1422029
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1422029
• Substitutable numbers: 1422029, 24001422029
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and compatibility with BMW models

The presented gearbox has been designed to work with the M52 unit in BMW E38 728i and E39 528i models, which translates into correct gear ratios, appropriate shifting characteristics, and compatibility with the vehicle's factory electronics. As a result, it is the right choice when replacing a worn-out transmission in premium cars where the consistency of the entire drivetrain is essential.

Its original BMW origin means that factory mounting points are preserved, along with proper connection to the driveshaft and correct integration with the transmission oil cooling system. For the user, this means fewer installation modifications are required and the ability to maintain the stock driving characteristics.

Automatic transmission operating characteristics

The applied gearbox type: automatic has been developed with smooth, comfortable driving in mind, typical of BMW luxury sedans. The automatic transmission provides:

• automatic gear shifting adapted to load and driving style,
• stable torque transfer across the full engine RPM range,
• optimized cooperation with the M52 engine control system.

Thanks to the factory configuration, the gearbox maintains the correct shift logic, which is important both in daily use and during more dynamic highway driving. The user receives a transmission that is structurally adapted to the weight, power, and character of specific BMW models.

Use in repairs and service projects

A used automatic transmission of this type is often chosen as a service solution when repairing the existing transmission is unprofitable or technically difficult. Replacing the complete unit allows for reduced vehicle downtime and restores drivetrain efficiency while maintaining factory specifications.

In practice, such a transmission is used in:

• comprehensive drivetrain overhauls in BMW E38 728i and E39 528i,
• projects restoring classic cars with the M52 engine to full working order,
• service centers specializing in BMW automatic transmissions, where access to original components is a priority.

Due to its factory origin, it is a component that fits well with repair assumptions consistent with the manufacturer's guidelines, without the need for substitute solutions with uncertain characteristics.

Technical support and selecting the right gearbox

When selecting an automatic transmission for a BMW, it is crucial to pay attention to compatibility with the specific engine version, model year, and vehicle equipment configuration. The original transmission from this group has assigned part numbers and interchangeable numbers, which facilitates compatibility verification in service catalogs and parts selection systems.

To better understand when purchasing a used gearbox is a cost-effective solution and what to look for during installation and technical condition verification, it is worth reading the guide: Used gearbox – when is it worth it and what you need to remember. The article discusses the differences between manual and automatic transmissions, compatibility issues, and compares purchasing a used unit with regeneration.

Expanding work within BMW automatic transmissions

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other elements from the same group, such as a torque converter, hydraulic control elements, or additional mounting components, check the available parts in the BMW automatic gearboxes category.

For projects involving equipment expansion or car modernization using original components from higher versions, the material describing retrofitting in BMW and VAG group vehicles may also be helpful: Retrofitting in VAG and BMW group cars – how to cheaply equip a car using used parts. It allows you to better plan work when broader interference with the vehicle's configuration is involved.

Summary

Automatic Gearbox BMW E38 728i E39 528i M52 A5S310Z 1422029 WARRANTY is an original automatic transmission designed for specific BMW models, ensuring proper mechanical and electronic fitment. Choosing such a unit is a rational solution for major drivetrain failures when the priority is maintaining factory driving characteristics and the consistency of the entire drivetrain.