BMW E90 E91 318d 320d M47N2 Charge Intake Air Line Hose Turbo 7805437

BMW E90 E91 318d 320d M47N2 Charge Intake Air Line Hose Turbo is an original intake system component designed for the M47N2 diesel engine in the 3 Series E90/E91. This factory-made hose from the Lines, hoses and pipes group ensures airtight routing of compressed intake air, which translates into stable turbocharger operation and proper engine performance. Choosing an original BMW component guarantees precise geometric fitment and compatibility with other system elements.

Specifications and technical data

• SKU: 7805437
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805437
• Substitutable numbers: 11617805437, 7805437, 11617790524, 7790524
• Category: Hoses, Lines & Pipes

Purpose and function in the turbocharging system

The charge intake air hose in the BMW 318d model with the M47N2 engine is responsible for transporting compressed air from the turbocharging system to the intake manifold. A correctly selected hose:

• maintains the appropriate boost pressure without losses due to leaks,
• minimizes the risk of power loss and the engine entering limp mode,
• ensures stable engine operating parameters across the full load range,
• limits the possibility of contaminants entering the intake system.

Thanks to a design consistent with BMW's factory specifications, the charge intake air hose works correctly with the stock turbocharger, intercooler, and intake manifold, without the need to modify other components.

Original origin and BMW fitment

The product comes from the BMW line, which means maintaining factory quality and dimensional standards. The original hose from the Lines, hoses and pipes group:

• is designed specifically for the geometry of the E90/E91 318d M47N2 engine bay,
• features appropriately shaped sections and bends, facilitating routing in tight spaces,
• ensures proper positioning relative to mounts and clamps,
• eliminates the problem of collision with other engine accessories.

Such fitment translates into predictable installation and reduces the risk of material stress that could shorten the hose's service life.

Performance characteristics and benefits of installation

Using an original charge intake air hose in the BMW 318d M47N2 allows for restoring the correct intake system parameters after damage or wear of the previous element. In practice, this means:

• more stable throttle response,
• reduced risk of oil leaks and oil mist in the engine bay,
• maintaining the proper airflow required by the engine control unit,
• limiting unwanted noises resulting from intake leaks.

This solution is particularly recommended when diagnosing power drops, boost pressure-related errors, and during comprehensive intake system maintenance in M47N2 engines.

Component condition and installation aspects

The offered hose belongs to the group of used OEM components, which in practice means maintaining original geometry and compatibility while optimizing repair costs. This type of part is a good choice for servicing daily-driven cars, where a reasonable balance between quality and budget is important.

The hose is intended for installation in place of the factory element, using stock clamps and mounts. During replacement, it is recommended to check the condition of other intake system sections and mating components to avoid the recurrence of the problem in the near future.

Intake system expansion and related BMW components

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 intake lines, vacuum hoses, or turbocharging system pipes, check the available parts in the BMW Lines, hoses and pipes category.

To better plan your service strategy and make informed choices between new and used OEM components for premium brands, it is worth reading the market analysis in the article Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend, which discusses current trends and the practical benefits of choosing original salvaged parts.