BMW E81 E87 LCI 123d N47S Housing Cover Turbocharger Turbo Part 7804638 7810960

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E81 E87 N47S Turbo Bulb Housing/Adjuster is a turbocharger and parts component designed for the supercharging system in BMW vehicles with the N47S engine. A used turbo bulb housing/adjuster allows you to restore proper turbine operation while maintaining factory boost control characteristics.

Specifications and technical data

• SKU: 7804638-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7804638
• Substitutable numbers: 11657804638, 7804638, 7810960
• Category: Turbos & Parts

Purpose and function in the supercharging system

The turbo housing with the bulb and actuator is responsible for precise control of boost pressure in the N47S engine, working in conjunction with the turbocharger and engine control unit. A properly functioning actuator allows for smooth opening and closing of the turbine mechanism, which translates into stable engine operation, predictable throttle response, and reduced risk of overcharging.

In the event of symptoms such as power loss, limp mode, unstable boost pressure, or turbine-related errors, replacing just the housing with the bulb and actuator is often more cost-effective than purchasing a complete turbocharger. This allows you to maintain a functional turbine core by replacing only the control unit.

Benefits of using the original BMW turbo housing

The use of the original turbo housing with actuator in the N47S engine ensures:

• Factory fit to BMW E81 and E87 supercharger system – no need for modifications or mounting adaptations.
• Consistency of operating parameters with the engine control software, which facilitates diagnostics and calibration.
• Stable boost pressure control, reducing the risk of excessive turbine and engine load.
• Possibility of economical repair of the supercharging system without the need to replace the complete turbocharger.

For workshops and individual users, this means predictable installation and easier compliance with the factory operating parameters of the drive unit.

Used condition – a conscious technical choice

The turbo housing with bulb and actuator offered is in used condition, significantly reducing repair costs while maintaining the original BMW design. These types of components are often chosen by BMW specialists when cost-to-quality ratio and the ability to quickly replace them are key considerations, without the need for long waits for remanufacturing or a new part.

If you're wondering whether a new or used OEM part is the better option for you, this article comparing the two options might be helpful: New vs. Used? Comparing the Cost and Quality of Car Parts . You'll find practical tips on how to choose a solution that fits your budget and operational expectations.

Professional installation and diagnostics

To fully utilize the potential of the BMW E81 E87 N47S Turbo Housing/Adjuster, installation by a specialized service center familiar with N47S engines is recommended. Correct linkage adjustment, vacuum or control system leak testing, and engine control unit adaptation (if required) are crucial for turbocharger durability and driving comfort.

Before installation, it is worth doing the following:

• computer diagnostics for charging-related errors,
• control of vacuum lines or electronic control,
• checking the condition of the turbocharger itself (play, leaks).

This approach minimizes the risk of repeated disassembly and allows for a comprehensive solution to the problem with the charging system.

Other turbochargers and parts for BMW

If you're also looking for other turbochargers and parts for BMW, check out our dedicated category: turbochargers and parts for BMW . You'll find a wide selection of turbocharger components tailored to various BMW models, making it easy to assemble a complete repair kit.