BMW E60 E61 525d M57N Automatic Gearbox GA6HP26Z 7563429 7550777 WARRANTY

Listing details

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

BMW E60 E61 525d M57N Automatic Gearbox GA6HP26Z is a factory-original drivetrain component designed for diesel units, engineered for smooth, comfortable, and predictable gear shifting. The automatic transmission design works in harmony with the diesel engine, ensuring stable torque transfer and proper operating refinement in daily use. This solution is dedicated to users who expect consistency with BMW factory specifications and the preservation of the original driving characteristics.

Specifications and technical data

• SKU: 7563429
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7563429
• Substitutable numbers: 24007563429, 7563429, 24007556970, 24007550777, 7556970, 7550777
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Other Transmission & Drivetrain

Purpose and technical characteristics

The presented automatic gearbox is structurally adapted to work with a diesel engine, which means appropriately selected gear ratios, shift characteristics, and operating parameters under loads typical for diesel units. The use of an Automatic transmission allows for reduced jerking, stable starting, and predictable vehicle behavior in both city traffic and on the highway.

The GA6HP26Z version belongs to the group of modern automatic torque converter transmissions, where proper oil pressure control, precise operation of multi-plate clutches, and appropriate shift logic are essential. Thanks to this, the gearbox can provide:

• smooth gear shifting across the full RPM range,
• stable transfer of diesel engine torque,
• comfortable operation in city and highway driving modes,
• consistency with the vehicle's factory ECU settings.

Benefits of using an original automatic gearbox

Using a gearbox that complies with BMW factory specifications allows for maintaining the original vehicle handling characteristics without the need for modifications to the installation or software. The automatic transmission is prepared to work with the vehicle's onboard systems, such as engine management, safety systems, and driver assistance systems.

The main advantages of using this type of gearbox in a 5 Series BMW include:

• preservation of factory gear shifting patterns and throttle response,
• compatibility with the diesel-based drivetrain,
• the ability to restore proper drivetrain operation after a failure of the previous gearbox,
• consistency with the vehicle's original electrical and electronic architecture.

Condition and practical application

The offered gearbox comes from the group of used BMW components, which means it is intended for users looking for a solution consistent with the factory design while maintaining a reasonable repair budget. This type of component is particularly useful in situations where the existing transmission shows signs of wear, improper shifting, or requires a comprehensive replacement.

Before installation, a standard service procedure is recommended, including checking the oil cooling system, the condition of lines, and verifying the control software to ensure the gearbox works correctly with the specific vehicle configuration. Professional installation and transmission adaptation allow you to fully utilize its capabilities and reduce the risk of improper operation in the future.

Integration with the diesel drivetrain

Due to being dedicated to diesel units, the gearbox has been designed with the characteristic torque curve of a diesel engine in mind. Appropriately selected gear ratios and shift logic favor maintaining optimal RPM, which translates into:

• stable acceleration without excessive RPM spikes,
• effective use of torque in the low and mid-range,
• comfortable driving at constant speeds,
• the possibility of economical operation while maintaining the dynamics typical of BMW.

For owners of vehicles with a diesel engine, the proper functioning of the fuel injection system is also important. In the context of diagnosing the entire drivetrain, it is worth familiarizing yourself with material discussing typical problems of diesel units – detailed information can be found in the article about diesel injector faults.

Complementary elements and technical knowledge development

When planning a repair or upgrade of the drivetrain, it is worth taking a broader look at the construction of premium cars, including solutions used in sports versions of other brands. To compare drivetrain characteristics, gearbox operation, and braking systems in cars with increased power, you can use the analysis contained in the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses structural differences in the context of the engine, brakes, and chassis.

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 transmissions, control elements, or additional mounting components, check the available parts in the Other BMW category.