Mini Cooper D R55 R56 LCI N47N Turbo Turbocharger Variable Turbine Geometry

Mini Cooper D R55 R56 LCI N47N Turbo Turbocharger Variable Turbine Geometry is a precision turbocharging system component, designed for the stable operation of a diesel engine. Thanks to the use of variable turbine geometry, it ensures flexible torque development, better throttle response, and efficient utilization of the engine's potential across the entire rev range.

Specifications and technical data

• SKU: 7812318-5
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7812318
• Substitutable numbers: 11657812318, 7812318, 11658506724, 8506724
• Category: Turbos & Parts

Purpose and compatibility

The presented turbocharger is dedicated to Mini Cooper D R55 and R56 LCI (facelift) models with the N47N engine. The design has been developed specifically for the requirements of this power unit, which translates into correct boost pressure, proper cooperation with the engine control system, and the maintenance of factory operating parameters.

Selecting the right turbocharger is crucial for engine durability, smooth operation, and exhaust emissions. Using the appropriate model designed for the N47N minimizes the risk of calibration, overboost, or underboost issues, and also limits the need for additional accessory modifications.

Construction and variable geometry technology

The Variable Turbine Geometry (VTG) system allows for dynamic adjustment of the angle of the turbine vanes within the turbine housing. As a result, the turbocharger:

• ensures quick boost build-up at low RPM,
• maintains stable boost pressure at higher rotational speeds,
• reduces turbo lag, improving acceleration smoothness.

This solution is particularly beneficial in daily Mini Cooper D operation, where both efficient starting in city traffic and comfortable highway driving are important. Variable turbine geometry also supports the operation of exhaust emission control systems, which is significant for maintaining environmental standards.

Benefits of using an original Mini turbocharger

Choosing a turbocharger from the Turbochargers and parts group intended for the Mini Cooper D R55/R56 LCI with the N47N engine allows you to maintain the factory characteristics of the power unit. Proper matching in terms of exhaust flow, compressor efficiency, and geometry control translates into:

• stable performance across the entire rev range,
• proper cooperation with the engine control unit software,
• reduced risk of overloading internal engine components.

The item in used condition is a good solution for repairs where cost-to-functionality ratio is important, while maintaining compliance with the factory Mini specification.

Condition, verification, and service application

The turbocharger is offered as a used part, which in practice means the possibility of an economical repair of the turbocharging system while maintaining the original design. Before installation, a standard service procedure is recommended: inspection of the oil system, intake and exhaust pipes, and the tightness of the vacuum or electronic control system – depending on the vehicle configuration.

Replacing the turbocharger in a Mini Cooper D R55/R56 LCI with an N47N engine is particularly recommended in the event of power loss, excessive smoke, noise from the turbine area, or boost pressure-related errors stored in the engine controller. Using the correct model with the VTG system allows for restoring the proper operating parameters of the power unit.

Turbocharging system expansion and related components

If you are planning a comprehensive repair or upgrade of the engine area in your Mini and need other components from the same group, such as turbine housings, actuators, or intake system elements, check the available parts in the Mini Turbochargers and parts category.

For a comparison of the characteristics of turbocharged units across different brands and a better understanding of the impact of a turbocharger on performance, it is worth reading the analysis of sports designs – this is described in detail in the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the role of the engine, turbocharging system, brakes, and chassis in high-performance cars.