BMW F20 F21 F30 F31 LCI B47 Vacuum Resorvoir Tank Box 8514207

The BMW F20 F21 F30 F31 LCI B47 Vacuum Reservoir is an original vacuum system component designed for facelifted BMW 1 and 3 Series models with the B47 engine. Designed as part of the factory system, it ensures a stable vacuum source for pneumatically controlled components, contributing to reliable engine operation and predictable vehicle behavior. This solution is for users who expect compatibility with the factory installation and want to maintain the integrity of the entire system.

Specifications and technical data

• SKU: 8514207
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514207
• Substitutable numbers: 8514207, 11658514207
• Category: Vacuum Pumps

Function and Role in the BMW B47 Vacuum System

The vacuum reservoir in the B47 engine acts as a pressure buffer for vacuum-controlled elements, working in conjunction with components from the Vacuum Pumps group. It is responsible for storing vacuum during situations where its value generated by the pump temporarily drops, stabilizing the system's operation.

In practice, this translates to:

• more predictable response of vacuum-controlled systems,
• reduction of pressure fluctuations in the installation,
• maintenance of correct engine operating parameters under varying load conditions.

Compatibility with BMW F20, F21, F30, F31 LCI

The presented reservoir has been developed for the facelifted (LCI) BMW F20/F21 (1 Series) and F30/F31 (3 Series) platforms with the B47 engine. This ensures a fit with factory mounting points and compatibility with the original vacuum line routing, without the need for installation modifications.

Thanks to this:

• installation is performed similarly to the factory service procedure,
• the original geometry of the line routing is preserved,
• the risk of leaks due to improper fit is reduced.

Benefits of Using an Original Vacuum Reservoir

Choosing an original vacuum reservoir for a BMW with a B47 engine allows for maintaining the integrity of the entire vacuum control system. This component works with the vacuum pump and other components, so its proper volumetric and structural characteristics are important for system stability.

Key benefits include:

• maintaining parameters specified by the vehicle manufacturer,
• reducing the risk of control unit errors resulting from incorrect system pressure,
• better repeatability of operation for vacuum-controlled elements under various driving conditions.

Item Condition and Service Application

The product comes from the group of used original BMW parts, making it an attractive alternative to new components while maintaining factory design. It can be used for both standard replacement of a worn reservoir and during more extensive service work on the vacuum system in the B47 engine.

This solution is particularly beneficial in situations where:

• diagnostics indicate unstable vacuum in the system,
• problems arise with the operation of vacuum-controlled elements,
• comprehensive servicing of the system working with the vacuum pump is required.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as pump housings, vacuum generating modules, or additional accumulators, check the available parts in the BMW Vacuum Pumps category.

Part Selection by Numbers and Technical Support

When selecting a vacuum reservoir for a specific configuration of BMW F20, F21, F30, or F31 LCI with a B47 engine, it is crucial to use manufacturer designations and reference numbers. This helps avoid errors due to differences between equipment versions or model years.

To better understand the principles of selecting parts by manufacturer numbers and the relationships between individual components in the engine bay, it is worth consulting expert materials. Practical tips on diagnostics, identifying parts by OEM numbers, and operating principles can be found in the article “Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair”, which clarifies many issues related to the operation of modern injection systems and component selection.