BMW E46 318i 318Ci Petrol N42 N46 Automatic Gearbox A5S 390R 7531411 WARRANTY

BMW E46 318i 318Ci Petrol N42 N46 Automatic Gearbox A5S 390R for N42 and N46 petrol engines is a factory-original component designed for vehicles equipped with a petrol powertrain. Thanks to its Automatic design, it ensures smooth gear shifting, comfortable city driving, and stable torque transmission under typical operating conditions.

Specifications and technical data

• SKU: 7531412
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7531411
• Substitutable numbers: 24007531412, 7531412, 24007520871 24007520870 24007531411, 7520871 7520870 7531411
• Weight: 150
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Automatic Transmission

Application and compatibility

The presented gearbox belongs to the Automatic gearboxes group dedicated to BMW 3 Series E46 models in 318i and 318Ci versions with N42 and N46 petrol units. It is a solution designed for a specific powertrain configuration, which facilitates selection in terms of mounting, gear ratios, and compatibility with the vehicle's factory control system.

The component has been developed as an automatic transmission for petrol-powered engines, which means it is matched to the operating characteristics of these units – the RPM range, torque, and typical loads in daily driving.

Construction and technical characteristics

The Automatic gearbox uses a planetary gear system and hydraulic gear control, which allows for smooth and predictable gear changes. The construction is optimized for cooperation with petrol engines, ensuring appropriate gear ratios and stable power transmission.

The significant weight of the transmission assembly testifies to its solid construction and the use of durable mechanical components. The gearbox has an assigned OEM part number and associated interchangeable numbers, which facilitates precise identification and selection of the correct variant for a specific vehicle.

Benefits of installing a used automatic gearbox

Choosing a used BMW automatic gearbox allows you to significantly reduce repair costs compared to purchasing a new component, while maintaining the factory design and fitment for the vehicle. A properly selected transmission enables:

• maintaining the original gear shifting characteristics intended by the manufacturer,
• consistency of operation with the existing engine and powertrain control system,
• reducing vehicle downtime thanks to the installation of a complete assembly.

An additional advantage is the possibility of verifying compatibility using the OEM number and interchangeable numbers, which minimizes the risk of selecting the wrong gearbox version.

Professional selection and additional information

To maximize the potential of this gearbox, it is worth verifying compatibility with your specific BMW E46 318i or 318Ci before purchase, using the OEM part number, reference numbers, and vehicle data. Procedures for selection by VIN and comparing parameters with technical documentation are helpful here.

If you want to better understand how to safely and consciously choose used transmissions and other powertrain components, check out our expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses, among other things, selection by VIN/OEM and real cost differences.

Expanding work within the BMW powertrain system

If you are planning a comprehensive repair or upgrade of the powertrain area in your BMW and need other elements from the same group, such as additional automatic transmissions, compatible torque converters, or related control elements, check the available parts in the BMW automatic gearboxes category.