BMW 3 Series F30 LCI 330e B48X Holder Brake Expansion Tank Bottom 8619461

BMW 3 Series F30 LCI 330e B48X Holder Brake Expansion Tank Bottom is an original mounting component designed for the braking system of the facelifted 3 Series hybrid version. Thanks to its precise fit to the body structure and engine bay, it ensures stable seating of the reservoir, which promotes safe and consistent operation of the entire system. This used black component allows for an economical, yet technically correct repair or restoration of the factory configuration.

Specifications and technical data

• SKU: 8619461
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8619461
• Substitutable numbers: 17138619461, 8619461, EM
• Color: Black
• Category: Other Interior Parts & Accessories

Purpose and function in the braking system

The presented holder is dedicated to BMW 3 Series F30 LCI 330e B48X models, where it is responsible for the bottom mounting of the brake fluid expansion tank. Its task is to keep the reservoir in a fixed position relative to the body, which reduces vibrations and minimizes the risk of micro-cracks in the connectors and leaks in the lines.

Stable mounting of the reservoir is particularly important in vehicles with hybrid drives, where there is a higher density of components in the engine bay. A properly selected holder facilitates service, ensures predictable routing of lines, and supports the maintenance of the correct brake fluid level under various operating conditions.

Construction, color, and fitment

The holder is manufactured as a structural element matched to the factory mounting points in the BMW F30 LCI body. The black color is consistent with most components in the engine bay, allowing the part to visually blend into its surroundings without disrupting the original aesthetics. The shape of the holder has been designed to work with the dedicated brake expansion tank, providing proper support from the bottom.

Its original BMW origin means that factory dimensional tolerances are maintained, which translates into proper fitment with adjacent elements and eliminates the need for modifications. Installation takes place at existing mounting points, which facilitates the mechanic's work and reduces service time.

Condition, service application, and benefits of installation

The item is offered as a used part, which allows for lower repair costs while maintaining the manufacturer's original specifications. Replacing the holder is recommended in situations where the factory component has suffered mechanical damage, deformation, or excessive wear that may affect the stability of the reservoir.

The main benefits of using this holder include:

• restoration of the factory routing and support for the brake expansion tank,
• increased mounting stability under conditions of vibration and temperature changes,
• preservation of the original geometry of the braking system in the engine bay,
• possibility of economical repair using a genuine BMW part.

Integration with other components and part selection

The holder works with the dedicated brake expansion tank and line mounting elements in the engine bay. When selecting parts, it is worth paying attention to compatibility with the F30 LCI body version and the 330e B48X powertrain variant to ensure full installation compatibility. Thanks to the use of an original holder, it is possible to maintain the structural integrity of the entire mounting area, which is important for both safety and subsequent service maintenance.

If you are planning a comprehensive repair or upgrade of the engine bay area in your BMW and need other elements from the same group, such as holders, brackets, or covers, check out the available parts in the Other BMW category.

Technical support and knowledge about parts

For users interested in comparing design solutions across different makes and models, including braking and chassis systems, an article describing the differences between sports and standard versions may be helpful. More information can be found in the material: Audi RS vs other models – what is hidden under the hood and chassis?.

If you want to better understand the specifics of the second-hand parts market, the selection process, and the real benefits of choosing used components, it is worth reading the guide: Used car parts: Myths and facts you need to know. This will allow you to make an informed approach to purchasing the reservoir holder and other mounting components.