BMW F20 F21 F30 LCI M140i 340i Vent Pipe Engine Crankcase Breather Hose 7643100

BMW F20 F21 F30 LCI M140i 340i Vent Pipe Engine Crankcase Breather Hose is an original component of the B58 unit gas discharge system, designed for the facelifted M140i version. Engineered by BMW, it ensures proper airflow and stable ventilation, which promotes smooth engine operation and reduces the risk of leaks in the intake system.

Specifications and technical data

• SKU: 7643100
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7643100
• Substitutable numbers: 13907643100, 7643100
• Category: Hoses, Lines & Pipes

Purpose and function in the B58 engine system

The offered breather hose operates within the air system, discharging gases from the engine unit and stabilizing pressure in the system. In the B58 engine, this is crucial for the proper operation of the turbocharging system, emission control, and maintaining the tightness of connections between subsequent intake components.

Thanks to its factory geometry and fitment for the F20 LCI M140i version, the hose maintains the correct flow diameter, bending radii, and mounting points, which facilitates installation and allows for maintaining the original routing under the hood.

Construction and fitment for BMW F20 LCI M140i

The component belongs to the Lines, hoses, and pipes group, and its construction is adapted to operate in an engine bay with high temperatures and variable loads. The material used and the shape of the hose are developed to minimize the risk of kinks, micro-cracks, and leaks during operation.

Original mounts and connection ends allow for secure seating on the ports and compatibility with factory clamps. As a result, the hose can be installed as a direct replacement for a worn component, without the need for modifications or the use of additional adapters.

Benefits of using an original BMW hose

Using an original breather hose in an M140i with a B58 engine allows for maintaining the factory parameters of the intake system. This is particularly important in vehicles where stable boost characteristics, proper engine management system operation, and maintaining original emission values are essential.

The most important advantages include:

• secure fitment to the B58 unit and F20 LCI body,
• maintenance of the original hose routing in the engine bay,
• compatibility with factory connectors and mounting elements,
• reduction of the risk of leaks in the air and ventilation system.

Condition, origin, and service application

The hose comes from dismantling and is offered as a used part, which is a reasonable solution for servicing or repairing the ventilation system in a BMW F20 LCI M140i. This type of component is often replaced when symptoms such as unstable engine operation, oil leaks around the hoses, or errors related to the intake system occur.

Before installation, it is recommended to perform a standard check of connection tightness and the condition of cooperating air system components. In case of drivetrain expansion or modernization, it is also worth paying attention to other components from the lines and hoses group, available in the Lines, hoses, and pipes for BMW category, to perform a comprehensive service.

Support with part selection and operation

Selecting the correct breather hose for a specific F20 LCI M140i version with a B58 engine is crucial for proper installation and subsequent operation. In case of doubts regarding compatibility, it is worth verifying the manufacturer's markings and comparing the shape and mounting points with the element installed in the vehicle.

For users who are planning broader drivetrain modifications or analyzing the impact of individual components on the characteristics of the drivetrain system, the article Dismantled drive axles and differentials – how to choose gear ratios for driving style, which discusses practical aspects of selecting used and refurbished components, may be helpful.

If you are looking for an original solution for the ventilation system in an M140i, BMW F20 F21 F30 LCI M140i 340i Vent Pipe Engine Crankcase Breather Hose will be the right choice for service repairs, maintaining factory engine performance parameters, and ensuring the integrity of the entire intake system.