BMW E87 E90 F20 F30 Engine Starter Motor Actuator Bosch N47 N47N 8570383

BMW E87 E90 F20 F30 Engine Starter Motor Actuator Bosch N47 N47N is an original component from the Starter Motors group, designed for BMW diesel engines from the N47 and N47N families. The design, prepared for diesel engines, ensures appropriate starting torque, stable operation in low temperatures, and repeatable, reliable engine starting.

Specifications and technical data

• SKU: 8570238-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8570238
• Substitutable numbers: 8570238, 12418570238, 7823700, 12417823700, 8515795, 12418515795, 7812034, 12417812034, 7798006, 12417798006, 8570383, 12418570383, 8506657, 12418506657, 7802508, 12417802508, 7801203, 12417801203, 12418581097, 8581097, 12418577006
• Fuel type: Diesel
• Part type: Starter Motor
• Category: Starter Motors

Purpose and compatibility with diesel engines

The presented starter motor is designed to work with BMW Diesel engines from the N47 and N47N families, used in models such as the E87, E90, F20, and F30 series. This means it is matched to the high compression ratio characteristics typical of diesel units, as well as the appropriately selected rotational speed and starting torque necessary for efficient cold engine starting. The Bosch starter motor in this configuration is an OEM component, which translates into proper fitment with the gearbox housing, flywheel, and the vehicle's electrical system. As a result, installation is predictable, without the need for modifications to mounts or wiring.

Technical and design characteristics

The Bosch starter motor used in this model utilizes a classic, proven electromagnetic design, optimized for diesel engines. The use of appropriately selected windings, gears, and an overrunning clutch allows for:

• efficient torque transfer to the flywheel ring gear,
• stable starting even with reduced battery voltage,
• reduction of noise and vibrations during engine start-up. The starter motor is a compact unit, which facilitates its installation in the engine bay, especially in tightly packed BMW units. The design provided by the manufacturer ensures proper cooling and resistance to typical operational loads in diesel engines.

Benefits of using an original Bosch starter motor

Using an original Bosch starter motor in N47 and N47N engines brings a number of practical operational benefits:

• Stable starting – properly selected electrical and mechanical parameters ensure reliable engine starting in various conditions.
• Full integration with the BMW system – the starter motor works with the factory power and control system, which minimizes the risk of errors and fault messages.
• Appropriate durability – the design intended for operation in diesel engines limits the wear of mechanical components during frequent starts. Choosing an original component from the Starter Motors group allows you to maintain factory starting parameters, which is important for both user comfort and the longevity of the engine and its accessories.

Condition, verification, and practical application

The offered starter motor is a used component, sourced from dismantling, which allows you to combine an attractive price with the preservation of original BMW specifications. This type of part is a particularly attractive solution for maintenance repairs when you want to maintain factory quality without the need to invest in a new sub-assembly. The Bosch starter motor for N47/N47N engines will work well both as a replacement for a damaged component and as a part installed preventively during major service work on the engine unit. This helps reduce the risk of vehicle starting problems after other repairs are completed.

Expansion of the starting system and ecology

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional starter motors, mounting elements, or related starting system components, check the available parts in the BMW Starter Motors category. Choosing original used components, such as the Bosch engine starter motor for BMW, is also a way to take a more conscious approach to vehicle maintenance. Instead of reaching for new replacements of uncertain quality, it is worth considering the reuse of proven OEM components. You can find more about the impact of such decisions on the environment in the article Sustainable motoring: How purchasing original used parts reduces your carbon footprint and protects the environment?.