BMW 1 3 E87 M47N2 E90 E91 E92 Radiator Coolant Water Drain Plug Screw 7529497

BMW 1 3 E87 M47N2 E90 E91 E92 Radiator Coolant Water Drain Plug Screw is an original cooling system component designed for BMW 1 and 3 series models equipped with the M47N2 diesel engine. This precisely manufactured service plug allows for safe venting and controlled access to the coolant circuit, facilitating system maintenance and diagnostics. By using a factory-spec solution, the proper tightness and stability of the entire cooling system are maintained.

Specifications and technical data

• SKU: 7529497
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7529497
• Substitutable numbers: 17117529497, 7529497, EM
• Category: Cooling Plates

Purpose and function in the cooling system

The BMW 1 3 E87 M47N2 E90 E91 E92 Radiator Coolant Water Drain Plug Screw in BMW E87, E90, E91, and E92 models with the M47N2 unit serves as a service element in the cooling circuit. It enables controlled draining or venting of the fluid, which is essential when changing coolant, flushing the system, or removing air pockets after repairs. The use of the original design ensures a proper fit into the radiator socket and a stable seal under operating pressure.

A well-fitted plug reduces the risk of leaks, seepage, and engine overheating resulting from the presence of air in the system. In BMW vehicles with the M47N2 engine, this is of particular importance, as proper coolant circulation affects the durability of the engine unit and its accessories.

Construction and fitment for BMW

The element has been designed in accordance with the vehicle manufacturer's requirements, which translates into the correct thread shape, appropriate working length, and profile of the sealing part. As a result, the BMW 1 3 E87 M47N2 E90 E91 E92 Radiator Coolant Water Drain Plug Screw works with the factory radiator and other cooling system components without the need for modifications. Precise fitment reduces stress in the socket and minimizes the risk of damage during installation or removal.

The product comes from the Cooling plates group, which means it is part of the system responsible for dissipating heat from the engine and maintaining a stable operating temperature. Using an original solution allows for compliance with factory cooling system parameters, which is important both during standard operation and under higher thermal loads.

Condition, service application, and advantages of the used part

The offered BMW 1 3 E87 M47N2 E90 E91 E92 Radiator Coolant Water Drain Plug Screw is an aftermarket part, which allows for an economical repair of the cooling system while maintaining the original BMW specification. This type of component is particularly useful in situations where the factory plug has suffered mechanical damage, become worn, or issues with maintaining a seal have arisen. Replacing it with an original used part is often more beneficial than using replacements with uncertain fitment.

The main benefits of using this product include:

• maintaining factory geometry and fitment to the BMW radiator,
• the ability to restore the proper tightness of the cooling system,
• support for proper venting and servicing of the fluid circuit,
• reasonable repair cost while maintaining the original design.

Practical installation tips

When installing the BMW 1 3 E87 M47N2 E90 E91 E92 Radiator Coolant Water Drain Plug Screw, it is recommended to thoroughly clean the radiator socket and check the condition of the sealing surfaces. Proper tightening with moderation limits the risk of thread damage or socket deformation. Regular leak checks after changing the coolant or performing service work allow for quickly detecting any leaks in the area of the plug and preventing a drop in coolant levels.

In vehicles used intensively or with high mileage, it is worth periodically verifying the condition of cooling system service elements, including plugs and vent screws, to maintain stable engine operating conditions and avoid overheating.

Expanding the BMW cooling system – related components

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other elements from the same group, such as radiators, flow channels, or additional mounting elements, check the available parts in the BMW Cooling plates category.