BMW 3 Series E90 E91 318d N47 Turbo to Intercooler Pipe Charge Air Line 7797482

BMW E90 E91 318d N47 Intercooler Hose Pipe is a used turbocharger and parts component designed for the N47 engine's supercharging system. It's responsible for the efficient routing of compressed air between the intercooler and the rest of the system, which has a direct impact on the engine's smooth operation and stable performance.

Specifications and technical data

• SKU: 7797482
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7823887
• Substitutable numbers: 11617823887, 7823887, 11617797482, 7797482
• Category: Turbos & Parts

Purpose and function in the supercharging system

The intercooler hose for the BMW 318d with the N47 engine operates at high pressures and elevated temperatures, so its proper condition is crucial to the tightness of the entire charging system. Properly selected geometry and diameter ensure proper airflow, reducing pressure drops and flow resistance.

This element is particularly important in the case of diesel engines, where stable boost pressure translates into:

• proper operation of the turbocharger and its accessories,
• maintaining nominal power and torque,
• reducing smoke and performance drops when accelerating.

Benefits of using the original BMW cable

Selecting a turbocharger and parts hose specifically designed for your BMW E90/E91 318d engine allows you to maintain factory operating parameters. The original connection geometry simplifies installation and ensures proper alignment in the engine compartment, free from stress and unnatural bends.

The main advantages of using this cable include:

• precise fit to the N47 engine – no need for modifications or adapters,
• maintaining the factory airflow route,
• reducing the risk of leaks at critical points of the charging system.

Used condition – conscious technical choice

The hose offered is in used condition, allowing for cost-effective repair while maintaining proper operating parameters. For many BMW owners with N47 engines, this represents a reasonable compromise between cost and functionality, especially for components that are not typically wear-and-tear parts but require periodic replacement due to material aging or mechanical damage.

Choosing a used intercooler hose also aligns with the idea of component reuse. To learn more about how dismantled parts—including those for engines like the N47—support the circular economy, check out the article: Circular Economy and Used Dismantled Parts in the Automotive Industry .

Why is a tight intercooler hose so important?

In a turbocharged diesel engine, even a small leak in the intercooler pipe can cause:

• drop in boost pressure and noticeable loss of power,
• increased fuel consumption,
• incorrect operation of the engine control system (boost-related errors),
• excessive load on the turbocharger, which compensates for air leakage.

Therefore, in case of symptoms such as air whistle under load, drop in dynamics or appearing errors related to supercharging, it is worth checking the condition of the intercooler hoses and, if necessary, use a properly selected element, such as BMW E90 E91 318d N47 Hose Intercooler Pipe .

Complementary BMW supercharging system components

If you're looking for other turbocharger hoses and parts specifically for this brand, check out the turbochargers and BMW parts available in our store. This allows you to take a comprehensive approach to turbocharger system servicing, combining intercooler hose replacement with inspection of other components.

If you're interested in caring for engine components in modern engines, including the supercharging system, you might also want to check out our blog guide: How to Care for Engine Components and the Supercharging System in Modern Engines . While this article focuses on popular Mercedes-Benz models, the service and maintenance guidelines discussed there are also helpful for owners of other brands, including BMW.