BMW E90 LCI N47N Turbo Charger Actuator Part 49335-19411 6NW010430

The BMW E90 LCI N47N Turbocharger Actuator Controller is a specialized component of the turbocharger system in diesel engines, responsible for precisely controlling the turbocharger's operation. This OEM component ensures a factory fit for BMW N47N engines, maintaining the proper operating parameters of the turbocharger.

Specifications and technical data

• SKU: 8515188-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8515188
• Substitutable numbers: 11658515188, 8515188, 49335-19411, 6NW010430, 6NW 010 430
• Fuel type: Diesel
• Category: Turbos & Parts

Purpose and function in the supercharging system

The turbo actuator controller in BMW diesel models is responsible for dynamically adjusting the turbocharger geometry or control valve position. This enables:

• stable build-up of boost pressure across the full engine speed range,
• better response to pressing the accelerator pedal,
• maintaining correct combustion parameters in the diesel unit,
• turbocharger overload protection.

A properly functioning actuator has a direct impact on the performance, operating culture and fuel consumption of a diesel engine.

Construction and technical characteristics

This BMW E90 LCI N47N turbo actuator/controller falls under the Turbocharger & Parts category, meaning it's an integral component of the turbocharging system, not a universal replacement. As an OEM part, it's designed for:

• precise cooperation with the engine control electronics,
• appropriate operating range for a specific turbocharger,
• maintaining the factory boost control parameters.

The presence of dedicated replacement numbers allows for the clear identification of compatible turbocharger configurations within the BMW range, making it easier to select the correct component for repair or replacement.

Condition, origin and use in a diesel engine

The actuator offered is a used original part, sourced from a disassembly. This choice is often preferred by mechanics and informed users because:

• maintains the manufacturer's factory specifications,
• allows you to reduce repair costs compared to a new part,
• is a better fit than many universal replacements.

Designed for a diesel engine, the actuator is prepared to operate under high thermal and pressure loads, typical of turbocharged diesel engines.

Benefits of installing an efficient turbo actuator

Replacing a faulty turbo actuator with a working OEM component in the BMW E90 LCI N47N allows you to restore proper operation of the turbocharging system. In practice, this means:

• more smooth power development without jerking and loss of boost,
• reducing the risk of turbocharger overload,
• reducing failure modes related to boost pressure errors,
• better cooperation with the diesel engine injection system.

For workshops and users, this means more stable vehicle operation and a reduced risk of costly repairs to the entire turbocharger.

Parts selection and technical support

Before purchasing, it's worth comparing the markings with the damaged component and the vehicle's specifications to ensure the actuator is suitable for your specific engine and turbocharger configuration. If in doubt, it's also helpful to check compatibility using the interchangeable part numbers in service documentation or the manufacturer's catalogs.

If you are looking for other items from the turbochargers and parts category for BMW, check out our dedicated offer: turbochargers and parts for BMW .

When planning driveline repairs—especially in vehicles with higher mileage—it's worth expanding your knowledge of other key components. You'll find practical information in the guide: Second-Hand Differentials – What You Need to Know About Used Differentials, Sensors, and Drivetrains .