BMW F30 LCI Hybrid Expansion Tank Ventilation Pipe Hose Line 8740116

BMW F30 LCI Hybrid Expansion Tank Ventilation Pipe Hose Line is an original cooling system component from the Pipes, hoses and tubes group, designed specifically for the hybrid version of this model. Thanks to its factory geometry and fitment, it ensures stable coolant flow and proper ventilation of the expansion tank, supporting the trouble-free operation of the engine and hybrid system.

Specifications and technical data

• SKU: 8740116
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8740116
• Substitutable numbers: 8740116, 17128740116, 8616142, 17128616142
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

This ventilation pipe is a component dedicated to the cooling system in the BMW 3 Series F30 LCI (facelift) hybrid version. It is responsible for the controlled discharge of air from the expansion tank, which helps maintain stable pressure and proper coolant circulation throughout the entire circuit. A properly functioning pipe minimizes the risk of overheating and uneven engine performance.

Construction and fitment for BMW F30 LCI Hybrid

The pipe has been designed as an original BMW part, maintaining the correct diameter, shape, and mounting points characteristic of the F30 LCI Hybrid version. Thanks to this:

• it fits factory brackets and routings in the engine bay,
• it maintains the tightness of connections with other cooling system components,
• it ensures proper positioning relative to other sub-assemblies, reducing the risk of abrasion.

The original design translates into stable cooling system operation and predictable vehicle behavior under various operating conditions.

Benefits of using an original BMW pipe

Using a factory ventilation pipe in the BMW F30 LCI Hybrid brings a number of practical service and operational benefits:

• Compatibility with the hybrid system – the pipe is adapted to the thermal specifics of the hybrid version, which supports stable operating temperatures.
• Repeatable mounting parameters – no need for modifications, adjustments, or shortening of the pipe.
• Easier diagnostics – the mechanic can be sure that the geometry and flow correspond to factory specifications.
• Consistency with other BMW cooling system components – the pipe works with original connectors and clamps.

This solution is especially recommended for repairs where maintaining factory reliability and predictable cooling system behavior in the long term is a priority.

Characteristics of the used component

The offered pipe belongs to the group of used BMW parts, which allows for reducing repair costs while maintaining the original design. This type of component is a good choice in situations where fitment to a specific body and drive version is crucial, and there is no need to invest in a new part. A used pipe with preserved geometry and connection sockets facilitates installation and subsequent service maintenance.

Support in selection and repair expansion

In the case of BMW cooling systems, it is particularly important that the ventilation pipe works in harmony with other pipes, hoses, and tubes in the engine bay. 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 return lines, supply hoses, or ventilation tubes, check the available parts in the BMW pipes, hoses and tubes category.

If you want to better understand when it is worth choosing original used parts instead of refurbished components, especially in the context of expensive drivetrain repairs, take a look at the article: Manual transmission failures – why an original used part is a more sensible choice than refurbishment?. This will allow you to take a conscious approach to selecting other components for your car as well.