BMW 3 5 Series E34 E36 316i 318i 318is 518i Engine Cooling Radiator 1247436

BMW 3 5 Series E34 E36 316i 318i 318is 518i Engine Cooling Radiator is an original cooling system component from the Water Radiators group, designed for classic BMW models with petrol engines. This used OEM part allows for a technically correct replacement of the factory radiator, maintaining proper engine operating parameters and stable temperature across a wide range of loads.

Specifications and technical data

• SKU: 1247436
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8390435
• Substitutable numbers: 17111247436, 1247436, 17111723537, 1723537
• Category: Radiators

Purpose and compatibility

The presented radiator is dedicated to popular 3 and 5 Series models, such as the BMW E34 and E36 in 316i, 318i, 318is, and 518i versions. Thanks to the preservation of factory port geometry and mounting positions, the component works with the stock hose system, fan shroud, and engine bay equipment, facilitating installation without the need for modifications.

The original design ensures proper coolant flow and efficient heat dissipation, which is particularly important in city traffic conditions and during long highway drives.

Construction and performance parameters

The radiator belongs to the Water Radiators group, which means it features a classic, proven heat exchange system using coolant. The applied core design and channel layout are optimized for the engines used in the BMW E34 and E36, ensuring stable thermal engine operation.

Key performance features include:

• factory fitment for stock mounts and the front body frame,
• compatibility with the original fan and shroud,
• coolant flow designed for the typical loads of 1.6 and 1.8 engines,
• suitability for repairs while maintaining the manufacturer's original specifications.

Condition and benefits of choosing a used part

The item is offered in used condition, which represents a reasonable compromise between repair costs and maintaining original build quality. Choosing a used OEM radiator is particularly attractive when servicing older BMW models, where both proper cooling system operation and cost-effectiveness are important.

A used water radiator allows for:

• reducing repair costs while maintaining the factory design,
• preserving the vehicle's original character,
• using a part consistent with the vehicle manufacturer's requirements.

Practical installation tips

When replacing the radiator in a BMW E34 or E36, it is worth paying attention to the condition of rubber hoses, clamps, and coolant. It is recommended to:

• check the entire system for leaks after installation,
• bleed the cooling system according to the service procedure for the specific model,
• verify the operation of the fan and thermostat after the engine has warmed up for the first time.

This approach minimizes the risk of engine overheating and allows you to fully utilize the potential of the installed radiator.

Cooling system expansion and technical knowledge

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

To better understand how high summer temperatures affect the efficiency of the radiator and the entire cooling system, and when it is worth opting for used components, read our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. This will help you more easily assess when a water radiator replacement is necessary and how to choose the right component for your BMW.