BMW F10 F11 F12 F13 LCI Expansion Tank Coolant Radiator Bottle Diesel 7806038

BMW F10 F11 F12 F13 LCI Expansion Tank Coolant Radiator Bottle is an original cooling system component designed for modern BMW diesel engines. Thanks to its factory design, it ensures stable engine operating conditions, proper coolant circulation, and safe pressure relief. This is a practical solution for users who want to restore the full efficiency of the cooling system in their facelifted BMW 5 and 6 Series.

Specifications and technical data

• SKU: 7806038
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7806038
• Substitutable numbers: 7806038, 17137806038, 7647283, 17137647283, 7601949, 17137601949
• Fuel type: Diesel
• Category: Expansion & Overflow Tanks

Purpose and function in the cooling system

The presented expansion tank is a component of the cooling system in facelifted (LCI) BMW F10, F11, F12, and F13 models with diesel engines. It is responsible for compensating for changes in coolant volume, maintaining the correct fluid level, and stabilizing pressure throughout the circuit. A properly selected tank helps maintain the correct operating temperature of the power unit, which translates into its durability and efficiency.

Thanks to a design consistent with factory BMW standards, the tank works with original hoses, sensors, and the pressure cap, which facilitates installation and reduces the risk of leaks. This is particularly important in diesel engines, where stable cooling is crucial for protecting the turbocharger, cylinder head, and auxiliary equipment.

Benefits of using an original BMW tank

Using an original expansion tank in a BMW cooling system provides a number of practical technical benefits:

• factory fit for mounts and hoses in the engine bay,
• maintenance of proper coolant circulation throughout the system,
• appropriately selected working capacity,
• compatibility with factory fluid level sensors,
• reduction of the risk of engine overheating.

By choosing an original BMW expansion tank, you maintain the structural integrity of the cooling system, which facilitates diagnostics, service, and subsequent inspections. This solution is particularly beneficial when operating a diesel-powered car over long distances and under varying load conditions.

Product characteristics and condition

The offered item comes from the Expansion tanks group and is intended for diesel-powered BMW vehicles. The product is used, which means it has been dismantled, and its construction retains the features of original factory equipment. This type of part represents a reasonable compromise between repair costs and maintaining compliance with the manufacturer's solutions.

In practice, installation involves replacing the existing tank with the offered item, using factory mounting points and standard hoses. Thanks to this, service work is predictable, and the risk of fitment issues is minimized.

Selection, compatibility, and technical aspects

To correctly select the tank for a specific facelifted BMW F10, F11, F12, or F13 version, it is worth verifying compatibility with the cooling system of the given diesel engine. Key factors include matching the hoses, sensors, and the layout of components in the engine bay used in the car. In case of doubt, it is helpful to compare the shape, the arrangement of the ports, and the mounting method with the currently installed tank.

Choosing an original solution allows you to avoid problems typical of aftermarket replacements, such as imprecise fitment, different port diameters, or different positions of the vent ports. This is especially important in modern diesel units, where the cooling system works with many additional components.

Expanding knowledge about OEM parts and related elements

If you want to better understand why used original cooling system components are often a beneficial choice in terms of safety and service costs, it is worth reading our expert material: OEM quality assurance and safety – why used original car parts are the best choice for your car?.

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other items from the same group, such as additional tanks, auxiliary elements, or related components, check the available parts in the BMW expansion tanks category.