Turbocharger BMW E81 E87N E90 E91 Turbo Charger Diesel N47 120d 320d 8506891

The BMW E81 E87N E90 E91 120d 320d N47 Diesel Turbocharger is an original turbocharger from the Turbocharger & Parts segment, designed for BMW N47 diesel engines. It's a solution for users who want to restore the proper dynamics and refinement of their engine while maintaining its factory design.

Specifications and technical data

• SKU: 8506891
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8506891
• Substitutable numbers: 11658506892, 8506892, 8506891, 11657808478, 7808478, 11657797782, 7797782, 11654727470, 4727470
• Fuel type: Diesel
• Category: Turbos & Parts

Purpose and compatibility

This turbocharger is designed for popular BMW 1 and 3 Series models with the N47 diesel engine, such as the 120d and 320d. The design was developed to meet the requirements of diesel engines, ensuring appropriate boost characteristics throughout the entire rev range and stable interaction with the injection system and engine control unit.

Thanks to the use of the original architecture of the supercharging system, the turbocharger allows to maintain the proper engine operating parameters, including:

• efficient build-up of boost pressure in the low and medium rev range,
• smooth acceleration without excessive turbo lag,
• stable operation under highway load conditions.

Construction and operating characteristics

As an original BMW component, the turbocharger is designed for long-term use with diesel engines. The rotor geometry, channel shape, and material selection are optimized for the high combustion pressures and temperatures typical of diesel engines.

Key features:

• precise fit to the exhaust and intake manifold of the N47 engine,
• designed for the factory engine control unit maps,
• possibility of using existing installations and equipment without structural modifications.

This configuration allows the standard power and torque characteristics to be maintained, which is important both for driving comfort and the durability of other drive components.

Status, verification and practical application

The turbocharger is offered as a used item in the Turbochargers and Parts category. This means it comes from a disassembly and retains the manufacturer's original design. This type of component is particularly attractive to users who:

• are looking for a factory fit without the risk of compatibility issues,
• want to reduce repair costs while maintaining the original specifications,
• plan to restore stock performance after the failure of the existing supercharging system.

Before installation, standard workshop procedures are recommended: inspection of the lubrication, intake and exhaust systems, as well as verification of any contamination, to ensure correct operating conditions of the turbocharger in the diesel engine.

Benefits of using an original BMW turbocharger

Using an original BMW turbocharger for the N47 engine maintains the integrity of the entire drivetrain. In practice, this means:

• no need to modify the controller software,
• maintaining standard exhaust emission parameters,
• predictable behavior of the car in various operating conditions.

Additionally, the use of a component from the turbocharger and parts category, designed specifically for diesel engines, helps maintain proper fuel economy and stable operation in everyday use – both in city traffic and on longer routes.

Other BMW turbochargers and technical knowledge

If you're looking for other turbochargers for BMWs from different series and generations, check out our dedicated category: BMW turbochargers . There you'll find a wide selection of solutions tailored to specific BMW engines.

When selecting a used supercharger component, it's worth knowing the differences between new parts, aftermarket parts, and aftermarket components. The Global Parts guide: Genuine, aftermarket, and used car parts – what to choose in practice , which discusses the cost-effectiveness of individual solutions and the importance of matching manufacturer markings, can be helpful.

While the Audi article focuses on a different brand, it touches on the universal theme of preserving a vehicle's character through the use of appropriate components. It's worth reading to better understand how choosing the right components impacts the driving experience: how the parts you use help maintain the Audi brand's DNA .