BMW E87 E90 E91 Diesel M57 Vacuum Pump Pipe Brake Booster Servo Line 7785449

BMW E87 E90 E91 Diesel M57 Vacuum Pump Pipe Brake Booster Servo Line is an original vacuum system component, responsible for providing stable supply to the brake booster in BMW diesel engines. Thanks to its precise geometry and factory fitment, it ensures predictable brake pedal response and proper operation with the vacuum pump. This solution is intended for users who expect consistent brake system performance and the maintenance of factory vehicle parameters.

Specifications and technical data

• SKU: 7785449-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 11667798312
• Substitutable numbers: 11667798312, 7798312, 11667789391, 7789391, 11667785449, 7785449, 11667797256 34336766087, 7797256, 6766087, 34337802676, 7802676
• Fuel type: Diesel
• Category: Vacuum Pumps

Function and application in the brake system

The vacuum pump pipe in this model is responsible for transporting vacuum from the vacuum pump to the brake booster, which directly affects the braking assistance force. In Diesel engines, the vacuum system is crucial for driving comfort and safety, which is why a correctly selected pipe is essential whenever working on the braking system.

The component has been designed specifically for N57 units in BMW 1 and 3 series bodies, which translates into:

• a secure, airtight connection with the vacuum pump and brake booster,
• stable vacuum throughout the entire engine operating range,
• repeatable brake pedal performance characteristics.

Benefits of using an original pipe

Using an original vacuum pump pipe instead of a worn or leaking component allows for restoring proper brake booster operation without the need for system modifications. The pipe's design is matched to factory mounts and routing in the engine bay, which facilitates installation and reduces the risk of incorrect positioning.

The main advantages include:

• Factory fitment for the vacuum system – no need for modifications or custom fittings.
• Compatibility with the dedicated vacuum pump and brake booster in diesel engines.
• Ability to utilize existing mounting points in the engine bay.

Characteristics of the Vacuum pumps category

The vacuum pump pipe is an integral part of the Vacuum pumps group, which contains components responsible for generating and distributing vacuum in the vehicle. In the case of diesel engines, this system works not only with the brake booster but often with other vacuum-operated components as well, which is why tightness and proper flow have a direct impact on the stability of the entire system.

Replacing the pipe is particularly recommended when symptoms such as a hard brake pedal, increased braking distance, or audible hissing near the vacuum lines appear. Selecting a component from the same design group allows for maintaining system consistency and avoiding compatibility issues.

Component condition and installation aspects

The offered pipe comes from an original BMW system and is intended for reinstallation after prior verification for tightness and the condition of the connectors. This type of component, as part of the vacuum system, should be installed while maintaining cleanliness of the ports and the correct tightening torque for clamps and mounts to avoid micro-leaks.

During installation, it is worth paying attention to:

• correct pipe routing in accordance with the factory layout,
• absence of tension and twisting on working sections,
• precise seating of the ends in the vacuum pump and brake booster.

Matching by part numbers and technical support

The component belongs to a group of parts identified by OEM numbers and interchangeable numbers, which facilitates precise matching to a specific engine and body configuration. In case of doubts when selecting a pipe for your BMW, it is worth using the numbers from the existing component or service documentation to avoid installation errors.

To better understand the relationships between the fuel system and engine operation, as well as selecting parts by numbers, an article describing the diagnostics and maintenance of power supply components may be helpful – detailed information can be found in the material Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses, among other things, selecting components by OEM numbers.

If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other elements from the same group, such as vacuum lines, vacuum pumps, or brake booster supply components, check the available parts in the BMW Vacuum pumps category.