BMW E81 E87 LCI E90 N43 Engine Water Cooling Coolant Radiator 7564654

BMW E81 E87 LCI E90 N43 Engine Water Cooling Coolant Radiator is an original cooling system component from the Condensers (radiators) group, designed for use in selected BMW models with the N43 engine. This used OEM part allows for maintaining the factory performance characteristics of the cooling system, ensuring stable heat dissipation from the engine unit. It is a solution for users who expect a proven design and proper compatibility with the factory installation.

Specifications and technical data

• SKU: 7564654
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7564654
• Substitutable numbers: 17117564654, 7564654, 7547450
• Category: A/C Condensers

Purpose and function in the BMW cooling system

The water radiator in BMW models with the N43 engine is responsible for efficient heat exchange between the coolant and the air flowing through the core. A correctly selected component from the Condensers (radiators) group stabilizes the engine's operating temperature, which promotes its durability and the maintenance of proper combustion parameters. Using an original BMW design reduces the risk of issues with the fitment of connectors, mounts, or auxiliary equipment.

Construction and technical features of the radiator

The water radiator used in the BMW E81, E87 LCI, and E90 with the N43 unit is based on an aluminum core with a dense network of channels and fins, which promotes efficient heat dissipation while maintaining a reasonable weight. The design provided by the manufacturer accounts for factory mounting points, which facilitates installation in the engine bay without the need to modify brackets or housings. The applied design solutions are optimized for airflow and cooperation with the factory fan and shrouds.

Benefits of using an original BMW radiator

Using an original water radiator in a BMW cooling system with an N43 engine allows for maintaining the parameters specified by the vehicle manufacturer. Key advantages of this solution include:

• Factory fitment to the cooling system and adjacent components in the engine bay.
• Consistency with the operating characteristics of the thermostat, coolant pump, and fan control.
• Reduced risk of leaks resulting from imprecise fitting of connectors and hoses.
• Maintenance of a stable engine operating temperature, which promotes its durability.

The used OEM part is a good choice when the priority is to maintain the vehicle's original specification while optimizing repair costs.

Condition, installation, and practical tips

The offered water radiator is a used component, which means that before installation, it is worth verifying its visual condition and the patency of the flow channels. It is also recommended to check the flexible hoses, clamps, and other cooling system components to avoid subsequent leaks. Installation should be carried out in accordance with BMW service procedures, including proper bleeding of the system after filling it with fresh coolant.

Expanding the cooling system and selecting related components

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 other liquid radiators, additional heat exchangers, or related cooling modules, check the available parts in the BMW Condensers (radiators) category.

When planning broader service work, it is also worth checking out tips on selecting used powertrain components and accessories. Practical advice on evaluating the cost-effectiveness of purchasing used drivetrain components can be found in the article Used gearbox – when is it worth it and what you need to remember, which helps in making informed service decisions based on real costs and risks.