Coolant Hose BMW E39 E38 Petrol M52 Radiator Water Hose Line 1705223

Coolant Hose BMW E39 E38 Petrol M52 Radiator Water Hose Line is an original cooling system component designed for M52 petrol engines used in BMW 5 Series E39 and 7 Series E38 models. Thanks to its factory geometry and precisely selected connector diameters, it ensures stable coolant flow between engine components and the radiator. This is a practical solution for users who want to maintain the proper operation of the cooling system while adhering to factory specifications.

Specifications and technical data

• SKU: 1705223
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1705223
• Substitutable numbers: 1705223, 11531705223
• Fuel type: Petrol
• Category: Coolant Hoses

Purpose and function in the cooling system

The presented hose belongs to the Cooling system hoses and lines category and is responsible for transporting coolant in the circuit between the engine and the radiator in M52 petrol units. A correctly selected hose minimizes the risk of leaks, pressure drops, and local overheating, which directly impacts the durability of the engine and its accessories.

The component is dedicated to petrol-powered BMW vehicles, allowing for a proper fit to connectors, brackets, and hose routing in the engine bay. Using a hose with the appropriate shape and flexibility facilitates installation and reduces material stress during engine operation.

Benefits of using an original BMW hose

Using an original hose in the cooling system provides a number of practical benefits:

• Factory fitment for the M52 engine and the cooling system in BMW E39 and E38, with no modifications required.
• Properly selected hose rigidity and flexibility, which reduces the risk of kinks and bends during engine operation.
• Stable coolant flow, supporting the maintenance of the correct operating temperature of the engine unit.
• Compatibility with existing brackets and mounts in the engine bay, which speeds up installation.

By maintaining the original hose geometry, you can effectively reduce the risk of engine overheating, thereby decreasing the likelihood of costly repairs related to head gasket damage or deformation of aluminum components.

Condition, installation, and practical application

The hose comes from dismantling and is offered as a used part, which represents a reasonable compromise between cost and maintaining compliance with the original BMW design. Before installation, a standard visual inspection for any signs of wear is recommended to ensure its condition meets the requirements of your vehicle.

When replacing the hose, it is worth:

• checking the condition of the clamps and using new ones if necessary,
• bleeding the cooling system after refilling with fresh coolant,
• checking for leaks after the engine has reached its first operating temperature.

Such an approach allows you to fully utilize the potential of the hose and keep the cooling system in stable operating condition.

Technical support and additional information

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 lines, return hoses, or sections connecting the radiator to the engine, check the available parts in the BMW cooling system hoses and lines category.

To better understand the impact of a functional coolant hose on engine durability and the symptoms of overheating, it is worth reading the guide: Engine cooling system – overheating, repair, and used radiators. The article helps to assess the condition of the cooling system and choose the appropriate service strategy for BMW vehicles and other brands.