BMW 6 E63 E64 LCI 635d M57N2 Fuel Tank Breather Valve Line Hose Pipe 7180920

The BMW 6 E63/E64 LCI 635d M57N2 Fuel Tank Vent Hose is an original fuel system component, specifically designed for the facelifted version with the M57N2 diesel engine. Thanks to its precise fit to the factory installation, it ensures stable operation of the venting system and proper fuel vapor discharge, which is important for both component durability and driving comfort. As a used part, this hose offers a functional service solution for owners of the 6 Series E63/E64 models.

Specifications and technical data

• SKU: 7180920
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7180920
• Substitutable numbers: 16117180920, 7180920, EM
• Category: Other Air & Fuel Delivery

Purpose and Function in the Fuel System

The offered vent hose operates within the fuel system, connecting installation components to ensure controlled fuel vapor flow between the tank and the vent valve. In the BMW 6 Series E63/E64 LCI 635d with the M57N2 engine, it is crucial for:

• maintaining correct fuel tank pressure,
• stable operation of the vent valve,
• reducing the risk of fuel line leaks,
• preserving correct engine performance parameters under various load conditions.

Selecting the appropriate vent hose is particularly important for diesel engines, where the fuel system operates under higher loads, and sealing and proper venting affect the engine's smoothness and reliability.

Compatibility with BMW 6 E63/E64 LCI 635d M57N2

This hose has been designed for a specific body and engine configuration, ensuring proper routing within the engine bay and undercarriage. This means:

• geometry tailored to the factory mounting points in the BMW 6 E63/E64 LCI,
• compatibility with the fuel system of the 635d version with the M57N2 unit,
• direct replacement for the original hose without the need for modifications.

This makes the component a practical choice for fuel system repairs, especially when the existing hose has suffered mechanical damage, abrasion, or deformation due to wear and tear.

Characteristics of a Used Part

This vent hose is a used part, meaning it is an original component previously installed in a vehicle. Such parts are often preferred by BMW specialist workshops because they:

• maintain the factory fit for the specific model,
• allow for economical fuel system repairs,
• reduce the risk of installation issues common with universal aftermarket parts.

During installation, standard service procedures are recommended: checking connection points, inspecting clamps and brackets, and verifying for leaks after starting the engine. This approach allows for the full utilization of the original hose's potential for continued service.

Importance of Proper Venting in the M57N2 Engine

In the M57N2 unit, used in the BMW 6 635d, the fuel system is complex and operates under significant load. Therefore, efficient tank venting impacts:

• fuel supply stability during dynamic driving,
• reduction of unwanted fuel odors around the vehicle,
• proper interaction with emission control components.

Replacing a worn or damaged hose with a functional part restores correct fuel vapor circulation and reduces the risk of fuel system-related errors in the engine control unit.

Expanding Service and Related BMW Components

If you are planning a comprehensive repair or upgrade of the fuel system area in your BMW and require other components from the same group, such as hoses, valves, or additional connectors, check the available parts in the Other BMW category.

When working on the fuel system and engine, it is also beneficial to broaden your knowledge about the design differences between sport and standard car versions. The article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses, among other things, the impact of engine, brake, and chassis modifications on vehicle characteristics, may be helpful.

Summary

The Fuel Tank Vent Hose for BMW 6 E63/E64 LCI 635d M57N2 is an original fuel system component that ensures proper vapor discharge and stable tank operating conditions. Thanks to its precise fit for the specific body and engine version, it offers an effective service solution for repairs and upgrades of the fuel system in the 6 Series, allowing for the preservation of factory functionality and correct hose routing geometry.