Mini Air Charge Duct Hose R55 R56 W16 Cooper D Intercooler Connection 9655059180

Mini Air Charge Duct Hose R55 R56 W16 Cooper D Intercooler Connection is an intake system component responsible for efficiently routing compressed air from the turbocharger to the engine. Thanks to its precise fit for Mini diesel engine designs, it ensures stable boost operating conditions and helps maintain the correct torque characteristics. It is a practical choice for users looking for a proven, original solution instead of random aftermarket replacements.

Specifications and technical data

• SKU: 7794984-1
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7794984
• Substitutable numbers: 11617794984, 7794984, 9655059180
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the boost system

The boost hose in a Mini diesel engine is responsible for the airtight and shortest possible routing of compressed air between the turbocharger and the subsequent components of the intake system. A properly selected component reduces pressure drops, supports uniform cylinder filling, and helps maintain stable turbine operation across the full load range. In the event of leaks or damage to this section, power drops, increased fuel consumption, and engine control unit errors may occur, which is why a functional boost hose has a direct impact on the engine's refinement.

Benefits of using an original Mini hose

The offered component comes from the Hoses, pipes and tubes group, which means it was designed specifically to operate in the demanding environment of the engine bay. The properly selected geometry and internal diameter of the hose allow for maintaining factory airflow parameters, thereby avoiding unwanted changes in boost characteristics. In practice, this translates into:

• more predictable throttle response,
• maintenance of stock boost pressure values,
• reduced risk of intake air overheating,
• better compatibility with factory engine control unit software.

For users planning moderate modifications, this hose can also serve as a solid foundation for further, sensible diesel engine tuning. In such cases, it is worth checking out the guide tuning with used parts – how to safely improve performance, which discusses a practical approach to upgrades using original components.

Operating characteristics in a diesel engine

Diesel engines generate high boost pressures and significant thermal loads, which is why the boost hose must maintain dimensional stability and airtightness across a wide temperature range. The design of this hose has been prepared with the typical operating conditions of Mini diesel units in mind, covering both city driving and long-term highway loads. Proper routing of the hose minimizes the risk of rubbing against adjacent components, which in the long run reduces the possibility of abrasions and micro-cracks forming.

Condition, installation, and service application

The component is offered as a used part, which allows for an economical repair of the boost system while maintaining the manufacturer's original specifications. This type of hose is suitable both for a standard replacement of a damaged line and during a comprehensive intake service following a turbocharger failure. Installation of the hose requires maintaining cleanliness in the system, correct positioning relative to factory mounts, and checking for leaks after tightening the clamps.

The perfect complement to intake system upgrades

Replacing the boost hose is a good time to inspect other air system components in the vehicle. If you are planning a wider range of work on the intake or want to prepare the car for further modifications, it is worth considering the selection of other components from the group of related parts. To this end, it will be helpful to browse the offer in the Hoses, pipes and tubes – selection and maintenance guide category, where you will find practical tips on diagnostics, replacement, and failure prevention in boost systems.