BMW E46 318d 320d 320Cd Diesel M47N Automatic Gearbox A5S 390R 7520807 WARRANTY

BMW E46 318d 320d 320Cd Diesel M47N Automatic Gearbox A5S 390R is an original drivetrain component designed for BMW diesel models, ensuring smooth gear shifting and stable operation of the drivetrain. Thanks to its factory design for the M47N unit, the gearbox works with the engine and vehicle electronics in accordance with the manufacturer's standards, which facilitates installation and subsequent operation. This is a solution for users looking for a proven, used automatic transmission while maintaining high functionality.

Specifications and technical data

• SKU: 7526092
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7526092
• Substitutable numbers: 24007526092, 7526092, 24007531804 24007520808 24007526091, 24007531803 24007520807, 7531804 7520808 7526091, 7531803 7520807
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Other Transmission & Drivetrain

Purpose and compatibility

The presented automatic gearbox has been designed to work with diesel engines in the BMW 3 Series E46 in 318d, 320d, and 320Cd versions with the M47N unit. The Automatic design is tuned to the torque characteristics of the diesel engine, which translates into predictable vehicle behavior in everyday driving and under heavier loads. Using an original transmission allows you to maintain factory mounting points, correct gear ratios, and compatibility with factory controls.

Technical characteristics of the A5S 390R gearbox

The A5S 390R model is a five-speed, fully automatic torque converter transmission, widely used in BMWs with diesel engines. It was developed with the following in mind:

• smooth gear shifting across the entire rev range,
• proper transfer of high torque from diesel units,
• cooperation with electronic drive and traction control systems,
• maintaining driving comfort while ensuring mechanical durability.

Thanks to its factory configuration, the gearbox works with the oil cooling system and the factory controller software, which limits the need for additional modifications during replacement.

Use in everyday operation

The A5S 390R automatic gearbox in the BMW E46 318d, 320d, and 320Cd is particularly appreciated by drivers covering high mileage, where comfort and predictable drivetrain operation are important. In combination with a Diesel engine, it provides:

• smooth, even acceleration without jerking,
• optimal use of torque at low and medium RPMs,
• reduced driver fatigue in city traffic and on the road,
• stable vehicle behavior when towing or driving with a load.

Choosing an original, used automatic gearbox is a cost-effective solution for repairs when you want to maintain the factory driving characteristics without the cost of purchasing a new transmission.

Condition, verification, and selection of parts

The offered gearbox comes from the used BMW components segment, which allows you to combine reasonable cost with the preservation of the original design. Before installation, standard service activities are recommended, such as checking for leaks and replacing the oil and filter in accordance with the manufacturer's procedures to maximize the life of the transmission. Thanks to the presence of the OEM part number and interchangeable numbers in the technical specification, precise verification of compatibility with a specific vehicle version is possible.

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

Technical support and additional knowledge

When selecting an automatic gearbox for a specific version of the BMW E46, it is crucial to consider the engine type, fuel type, and the control system used. Proper transmission matching minimizes the risk of electronic problems, gearbox operation errors, or incorrect operation of driving modes. For drivers interested in comparing the characteristics of sports drivetrains with solutions used in standard models, the article on our blog may be helpful: Audi RS vs other models – what is hidden under the hood and chassis?, which discusses the differences in engine, brake, and chassis construction.