BMW F45 F48 F39 B48 B46 B42 Petrol Engine Cooling Coolant Water Radiator 7617633

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F45 F48 F39 B48 B46 B42 Petrol Engine Cooling Coolant Water Radiator is an original cooling system component from the Water radiators group, designed for BMW B-series petrol engines. It ensures stable heat dissipation from the engine, which translates into safe operation of the drivetrain across a wide range of loads and temperatures. This is a solution for users looking for a proven, used part with factory-fitment for specific generations of BMW models.

Specifications and technical data

• SKU: 7617633
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7617633
• Substitutable numbers: 7617633, 17117617633
• Fuel type: Petrol
• Category: Radiators

Purpose and role in the cooling system

The presented engine radiator has been designed to work with BMW B-family petrol engines, which means it is compatible with the thermal characteristics of modern turbocharged engines. It is responsible for efficient heat exchange between the coolant and the air flowing through the core, stabilizing the engine's operating temperature in city driving, highway conditions, and under higher loads.

Thanks to its factory design, the radiator works with original hoses, sensors, and accessories, which reduces the risk of leaks and installation issues. This is particularly important in modern cooling systems, where dimensional and flow tolerances are precisely matched to the specific engine.

Benefits of using an original BMW radiator

Using an original radiator from the Water radiators category allows you to maintain the factory operating parameters of the cooling system. In practice, this means:

• adequate heat dissipation efficiency at high RPMs and engine load,
• proper cooperation with the thermostat, water pump, and fans,
• maintaining the manufacturer-specified heating and cooling characteristics of the engine,
• reducing the risk of overheating, which can lead to head gasket damage or deformation of aluminum components.

For users planning long-term vehicle operation, it is also important that the original BMW radiator supports the consistency of the entire drivetrain, which is significant for future diagnostics and service.

Characteristics of the used radiator and installation aspects

The offered radiator is a used component, which represents a reasonable compromise between repair costs and maintaining the manufacturer's original specifications. In practice, this allows for an economical replacement of a damaged heat exchanger without the need to resort to unreliable aftermarket replacements. The used OEM part retains the factory geometry of connections and mounts, which facilitates installation in the engine bay.

When replacing, it is recommended to:

• check the condition of the cooling system hoses and clamps,
• flush the system and replace the coolant according to the manufacturer's recommendations,
• verify the correct operation of the fans and thermostat after installation.

This approach allows you to fully utilize the potential of the offered radiator and reduce the risk of secondary faults related to engine overheating.

Optimizing petrol engine performance

BMW B-family petrol engines, used in models such as the F45, F48, and F39, operate in high temperature and pressure ranges, especially in turbocharged versions. An efficient cooling system has a direct impact on:

• power and torque stability across the full RPM range,
• fuel consumption in city and highway conditions,
• durability of engine oil and sealing elements,
• reducing the risk of failures resulting from localized overheating.

Choosing a radiator dedicated to a petrol engine allows you to maintain the proper balance between reaching operating temperature quickly and effectively dissipating excess heat during intensive driving. This is especially important in modern units where the cooling system works with advanced control electronics.

Expanding knowledge and selecting other cooling system components

During high-temperature periods, it is worth taking care of the entire cooling system, not just the radiator itself. If you want to better understand how summer conditions affect heat exchange efficiency and when it is worth considering the installation of a used radiator or fan, check out our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. It is a practical source of information that will help you plan your service in an informed and economical way.

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 heat exchangers, coolant hoses, or expansion tanks, check out the available parts in the BMW Water radiators category.

For drivers who think long-term about vehicle value, it may also be important how the use of original used components affects the subsequent resale of the car – you can find more on this topic in the article Original used parts vs. resale value – how not to lose money?.