BMW E81 E87 E90 E91 E92 Petrol Engine Water Coolant Radiator 7559273

BMW E81 E87 E90 E91 E92 Petrol Engine Water Coolant Radiator is an original cooling system component designed for BMW vehicles with petrol engines. Thanks to its factory design, it ensures stable heat dissipation from the engine, supporting its safe and predictable operation even under higher loads. This is a used, tested water radiator that allows for a technically correct repair without the need to resort to unreliable aftermarket replacements.

Specifications and technical data

• SKU: 7559273-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7559273
• Substitutable numbers: 17117559273, 7559273, 17117521048, 7521048
• Fuel type: Petrol
• Category: Radiators

Purpose and compatibility with BMW models

The presented water radiator has been designed for popular BMW E81, E87, E90, E91, and E92 series models with petrol engines. This means that its geometry, connection ports, and mounting points are adapted to the factory design solutions of these generations, which facilitates installation and reduces the risk of compatibility issues.

Thanks to the use of the original BMW design, the radiator works with the stock cooling system – hoses, expansion tank, fan, and sensors – without the need for modifications. This solution is particularly beneficial for repairs where maintaining factory engine performance parameters and predictable behavior in various road conditions is a priority.

Technical and functional characteristics

The water radiator from this offer belongs to the Water Radiators category, which means it is responsible for the key stage of heat exchange between the coolant and the air flowing through the core. The design is adapted for use with petrol units, where rapid heat dissipation during variable RPMs and loads is essential.

The original construction ensures:

• adequate heat exchange surface of the core,
• proper coolant flow throughout the entire radiator cross-section,
• compatibility with factory mounts and equipment in the engine bay.

As a result, the cooling system maintains thermal stability, which translates into protecting the power unit from overheating and ensuring smooth operation in both city traffic and on the highway.

Benefits of choosing an original used BMW radiator

Choosing a used OEM water radiator for a BMW is a solution that combines economic aspects with the preservation of factory performance parameters. The original BMW design means a perfect fit for the specific vehicle platform, which minimizes the risk of leaks, installation problems, or incorrect positioning relative to the fan.

The main advantages of such a solution include:

• preservation of the factory cooling characteristics of the petrol engine,
• easier installation thanks to compatibility with original brackets and equipment,
• the possibility of an economical repair while maintaining the manufacturer's standards.

This is particularly important for cars used intensively or in varied conditions, where a stable operating temperature of the power unit has a direct impact on engine durability and driving comfort.

Application area and cooling system expansion

The water radiator operates in a critical area of the engine bay, responsible for maintaining the proper operating temperature of the petrol unit. Replacing this component is often the first step in comprehensive cooling system maintenance – especially after detecting leaks, a drop in cooling efficiency, or following a frontal collision.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional radiators, coolant hoses, or mounting elements, check out the available parts in the BMW Water Radiators category.

Expert support and operation in high temperatures

When operating a car in summer heat, the cooling system is under particular strain, and the condition of the water radiator has a direct impact on engine safety. It is worth knowing how to properly assess the condition of a used radiator and how to select other system components to avoid engine overheating.

More practical information on this topic can be found in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which describes the impact of high temperatures on the cooling system and the benefits of using proven, used OEM components.