BMW 1 3 E46 M47N E60 E61 E87 E90 E91 M47N2 4 Engine Vacuum Control Pipe 7789373

BMW 1 3 E46 M47N E60 E61 E87 E90 E91 M47N2 4 Engine Vacuum Control Pipe is an original vacuum system component designed for diesel engines used in, among others, the 1 and 3 series E46, E60, E61, E87, E90, and E91. The precisely selected geometry of the pipe ensures stable vacuum delivery to actuators, which translates into proper engine accessory operation and repeatable driving parameters. This solution is dedicated to users who expect compatibility with the factory installation and easy replacement of worn-out parts.

Specifications and technical data

• SKU: 7789373-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7789373
• Substitutable numbers: 11667789373, 7789373, 11667787913, 7787913, EM
• Category: Other Engine Parts

Purpose and function in the engine system

The described vacuum pipe operates within the control system of BMW diesel engines from the M47N and M47N2 families, used in popular 1 and 3 series models as well as selected 5 series versions. Its task is to transport vacuum between control elements, which enables the correct operation of components such as actuators, valves, or control modules dependent on system pressure.

Thanks to its factory profile and appropriately selected rigidity, the pipe maintains a stable shape in the engine bay, minimizing the risk of kinks, leaks, and drops in control efficiency. This is particularly important in diesel units, where precise control of operating parameters affects driving refinement, dynamics, and fuel consumption.

Compatibility with BMW M47N / M47N2 units

The pipe has been designed as an element of the original vacuum installation in BMW M47N and M47N2 engines mounted in E46, E60, E61, E87, E90, and E91 bodies. This means that it:

• fits factory mounts and brackets in the engine bay,
• maintains the correct routing relative to other harnesses and pipes,
• allows for installation without the need for system modifications.

For the user, this means reduced service time and a lower risk of installation errors compared to universal replacements, which often require adjustments in length or shape.

Characteristics of the used component

The element comes from dismantling, making it a cost-effective solution for drivers who want to restore the efficiency of the vacuum system without investing in a new installation kit. The used pipe retains its factory geometry and connection points, which facilitates its re-application in the vehicle.

Choosing an original, used component allows you to maintain the consistency of the entire engine control system with other OEM elements, which is especially important in the case of diesel units sensitive to leaks and parameter deviations.

Benefits of using the original vacuum pipe

Using a dedicated vacuum pipe in the BMW M47N / M47N2 engine brings a number of practical operational benefits:

• maintaining the correct pipe routing in the engine bay,
• reducing the risk of leaks at connections,
• stable operating conditions for vacuum-controlled elements,
• easier system diagnostics in the future thanks to compliance with service documentation.

For workshops and individual users, this means a more predictable repair result and greater certainty that the vacuum system will work with other components in accordance with the manufacturer's specifications.

System expansion and related elements

When working on the engine vacuum system, it is worth simultaneously verifying the condition of other pipes, tees, valves, and actuators to avoid a situation where a newly installed element works with other already worn-out 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 additional vacuum pipes, connectors, or small mounting parts, check the available parts in the Other BMW category.

If you are interested in comparing technical solutions used in different brands and models, including sports versions with advanced engine and brake control systems, take a look at the article Audi RS vs other models – what is hidden under the hood and chassis?, where key design and operational differences are discussed.