BMW F22 F30 F32 Coolant Expansion Tank Bottle Reservoir 7642159

BMW F22 F30 F32 Coolant Expansion Tank Bottle Reservoir is a cooling system component designed for BMW F-series models, responsible for maintaining stable pressure and coolant levels. The offered reservoir belongs to the Expansion tanks category and provides a practical solution for repairs or replacing a damaged cooling system component. Using an OEM component helps maintain factory engine performance characteristics and proper coolant circulation.

Specifications and technical data

• SKU: 7642159-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7642159
• Substitutable numbers: 7642159
• Part type: Coolant Expansion Tank
• Category: Expansion & Overflow Tanks

Purpose and function in the cooling system

The presented expansion tank acts as a coolant reservoir, compensating for volume changes resulting from engine heating and cooling. A properly selected component helps maintain stable system pressure, reduces the risk of engine overheating, and facilitates coolant level monitoring during vehicle operation. Thanks to its design compliant with BMW standards, the reservoir works with factory hoses, connectors, and sensors, which promotes trouble-free installation and maintains the original cooling system performance characteristics.

Benefits of using an original BMW reservoir

Choosing an original BMW expansion tank ensures:

• preservation of factory geometry and mounting points in the engine bay,
• compatibility with the stock cooling system and engine accessories,
• easier diagnosis of potential leaks due to the predictable OEM design,
• reduced issues with hose and connector fitment compared to aftermarket replacements. A used OEM component is a reasonable compromise between cost and maintaining original vehicle specifications, especially during maintenance repairs or restoring a car to a near-factory condition.

Condition, verification, and preparation for installation

The offered reservoir comes from disassembly and is classified as a used BMW component. Before being offered for sale, such items are standardly verified for visible mechanical damage, body cracks, and the condition of connection ports. This type of inspection helps minimize the risk of leaks after installation and facilitates seamless integration with the existing cooling system. During installation, it is recommended to use new hose clamps and thoroughly bleed the cooling system after replacement to fully utilize the potential of a functional expansion tank and avoid localized overheating.

Selection by OEM number and purchase support

To precisely match the reservoir to a specific version of the BMW F-series, it is worth using the OEM number and vehicle data. In case of doubts regarding selection, comparing the shape, arrangement of ports, and mounting points with the currently installed element in the car can be helpful. If you want to streamline the process of selecting parts by OEM number or VIN and are looking for practical tips, check out our guide: Guide: how to select the right car part by VIN and OEM number. You will find a step-by-step procedure and a list of questions worth asking the seller before purchasing a used component.

Expanding repairs within the BMW cooling system

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 reservoirs, mounting hardware, or caps, check out the available parts in the BMW expansion tanks category.

Summary

BMW F22 F30 F32 Coolant Expansion Tank Bottle Reservoir is a practical choice when replacing a damaged or leaking cooling system component in BMW F-series vehicles. A used, original component from the Expansion tanks group allows for maintaining factory fitment, proper cooling system operation, and provides an economical solution for vehicle service without compromising on OEM part quality.