BMW E81 E87 E90 E92 Radiator Drain Plug Flush Bolt 7530902

BMW E81 E87 E90 E92 Radiator Drain Plug Flush Bolt is an original cooling system component designed for BMW vehicles with petrol engines. It ensures a tight seal for the coolant drain point, facilitating maintenance and reducing the risk of uncontrolled leaks. This is a practical solution for users who want to maintain the factory operating characteristics of the cooling system in their E-series vehicles.

Specifications and technical data

• SKU: 7530902
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7530902
• Substitutable numbers: 7530902, 17117530902
• Fuel type: Petrol
• Part type: Trim Strip
• Category: Trim

Purpose and function in the cooling system

The BMW E81 E87 E90 E92 Radiator Drain Plug Flush Bolt is responsible for the controlled draining of the cooling system during fluid changes or maintenance work. In BMW E81, E87, E90, and E92 models with petrol engines, it is an auxiliary component that:

• allows for safe coolant drainage without removing the main hoses,
• reduces the risk of air pockets in the system when following the correct service procedure,
• ensures a tight seal after refilling the radiator.

Thanks to the preservation of the original geometry and thread, the plug works with the factory radiator, which promotes stable system operation and maintains the proper engine temperature.

Compatibility with petrol BMW models

The presented component is intended for BMW vehicles from the E family equipped with petrol engines. Using a factory-compliant drain plug is particularly important in cars operated under varying thermal conditions, where the cooling system works under variable loads.

Selecting a component from the same design group allows for maintaining:

• proper fitment into the radiator socket,
• adequate sealing after tightening,
• consistency with service procedures provided for a given BMW generation.

Performance characteristics of the component

As a part from the Trim, moldings, and decorations group, the radiator drain plug serves an auxiliary function that is essential from the perspective of vehicle maintenance. It facilitates regular coolant replacement, which contributes to:

• maintaining a stable operating temperature of the power unit,
• reducing the risk of overheating in the long term,
• maintaining the efficiency of the cooling system during typical urban and extra-urban use.

The item is sourced from dismantling, which allows for an economical replacement while maintaining the manufacturer's original specifications.

Condition, origin, and environmental aspect

The plug is offered as a used BMW component, which means it comes from an operated vehicle but is suitable for further use after proper installation. Choosing parts from dismantling is a cost-effective solution consistent with the idea of reusing components in the automotive industry.

If you want to better understand how reusing parts from dismantling affects the environment and your household budget, it is worth reading the article on the circular economy and the benefits of choosing used parts, which describes practical examples from the BMW market.

Expansion of upgrades within the BMW bodywork

If you are planning a comprehensive repair or upgrade of the bodywork area in your BMW and need other elements from the same group, such as covers, overlays, or additional moldings, check out the available parts in the BMW Trim, moldings, and decorations category.