BMW U06 X1 U11 B38X Water Coolant Expansion Tank Radiator Pipe Hose Line 5A30C13

BMW U06 X1 U11 B38X Water Coolant Expansion Tank Radiator Pipe Hose Line is an original cooling system component designed for BMW models with the B38X engine unit. Thanks to its factory-fit design, it ensures stable coolant flow between the expansion tank and other components, supporting safe engine operation under various driving conditions. It is a practical solution for users seeking a proven hose with a design that meets the manufacturer's standards.

Specifications and technical data

• SKU: 5A30C13
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A30C13
• Substitutable numbers: 5A30C13, 17125A30C13
• Part type: Hose
• Category: Coolant Hoses

Function and role in the cooling system

The coolant expansion tank pipe hose is responsible for the controlled flow of liquid between the expansion tank and other system components. A properly selected part:

• maintains the tightness of the coolant circuit,
• reduces the risk of engine overheating,
• ensures stable system pressure,
• supports even heat dissipation from the engine.

Due to its fitment for the specific configuration of the BMW U06 X1 and U11 with the B38X engine, the hose works in harmony with the factory component layout, which facilitates installation and subsequent maintenance.

Compatibility and fitment for BMW

The discussed hose has been designed with the cooling system architecture of newer generation BMW X1 and related U-series models in mind. This means:

• maintaining the original pipe routing geometry in the engine bay,
• compatibility with factory mounts and brackets,
• easier inspection of the hose condition during periodic maintenance.

Such fitment reduces the need for modifications and allows the cooling system to be maintained in a configuration close to the factory standard, which is beneficial from both a technical and operational standpoint.

Characteristics of the used component

As a secondary market item, the coolant expansion tank pipe hose has been selected for its suitability for further use. This type of component allows for:

• reducing cooling system repair costs while maintaining the original design,
• maintaining compatibility with other factory parts,
• efficiently restoring proper coolant circulation after a failure or leak.

Choosing a used hose is particularly advantageous in situations where the cost-to-functionality ratio is important, as well as the desire to maintain consistency with other system components.

Importance for cooling system durability

A functional coolant expansion tank pipe hose has a direct impact on the stability of the engine's operating temperature. A properly selected and correctly installed component:

• minimizes the risk of leaks and fluid loss,
• helps maintain the correct fluid level in the expansion tank,
• promotes even temperature distribution throughout the entire cooling system.

For users driving in city traffic and on longer routes, this is a significant aspect affecting driving comfort and safety.

Expansion and service of the BMW cooling system

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other parts from the same group, such as additional lines, hoses, or pipes carrying fluid, check the available parts in the BMW cooling system lines and hoses category.

To better understand how high temperatures affect cooling system performance and when it is worth opting for used components, check out our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which will help you consciously plan your service and part selection.