BMW 3 Series E46 M47N Intercooler Turbo Hose Pipe Line Diesel 7788307

BMW 3 Series E46 M47N Intercooler Turbo Hose Pipe Line Diesel is an original turbocharging system component designed for BMW diesel engines. This used component from the Clamps and mounting parts category allows for restoring proper airflow to the intercooler, which translates into stable engine operation. It is a practical solution for owners who want to keep their car in good technical condition while maintaining the factory design concept.

Specifications and technical data

• SKU: 7788307
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7788307
• Substitutable numbers: 11617788307, 7788307, BG
• Fuel type: Diesel
• Category: Clamps & Hardware

Purpose and role in the turbocharging system

The intercooler hose in a BMW diesel engine is responsible for transporting compressed air between the turbocharger and the charge air cooler. The proper tightness and shape of the pipe have a direct impact on:

• maintaining the correct boost pressure throughout the entire rev range,
• stable engine operation under load,
• reducing power drops resulting from system leaks,
• proper cooperation with the engine control electronics.

By using an original hose dedicated to the M47N unit, you minimize the risk of fitment issues and incorrect routing in the engine bay.

Construction and fitment for BMW E46

The intercooler pipe has been designed specifically for the engine bay geometry of the BMW E46 with a diesel unit. This means that:

• the hose routing is consistent with the factory intake system layout,
• the hose ends are prepared to work with original clamps and mounting elements,
• the appropriate stiffness and flexibility are maintained in areas exposed to vibration.

Such fitment reduces stress on the intercooler and turbocharger ports, which promotes a longer service life for the entire system.

Benefits of using an original hose

Choosing a used, original intercooler hose for BMW offers a number of practical advantages compared to random replacements:

• Factory geometry – the hose retains its original shape and diameters, which facilitates installation and ensures proper airflow.
• Compatibility with the diesel system – the component is adapted to the thermal and pressure loads characteristic of diesel engines.
• Consistency with other components – the pipe works with factory clamps and mounting parts, which simplifies service.

Thanks to this, you can effectively restore the efficiency of the turbocharging system without the need for installation modifications.

Application in repairs and upgrades

This intercooler hose is suitable both for the typical replacement of a worn-out component and for more extensive service work within the intake system. It is particularly useful when the existing hose shows signs of wear, such as:

• cracks or abrasions on the outer surface,
• signs of leaks and oil seepage from the air-oil mixture,
• deformations affecting airflow.

Replacing it with an original component helps reduce power drops, minimize the risk of the engine entering limp mode, and improve the engine's refinement.

Support with selection and dismantled parts

In the case of older models, such as the BMW E46, the availability of new parts at authorized service centers can be limited, which is why used components from dismantling are a reasonable alternative. If you want to better understand how to safely use such solutions and what to look for when purchasing, check out our guide: No parts at the dealership? How to handle repairs of older models using dismantled parts.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as clamps, brackets, or additional hose mounts, check out the available parts in the BMW Clamps and mounting parts category.