Thermostat Water Pump BMW X5 E70 3.0si N52N Petrol Engine Cooling Unit 7550172

Thermostat Water Pump BMW X5 E70 3.0si N52N Petrol Engine Cooling Unit is a cooling system component designed for petrol engines, engineered by BMW to ensure stable operation of the powertrain. Using an original design from the Thermostats and housings group helps maintain the correct engine operating temperature, which translates into smooth performance and component durability.

Specifications and technical data

• SKU: 7550172
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7550172
• Substitutable numbers: 11537550172, 7550172, BG
• Fuel type: Petrol
• Category: Thermostats & Housings

Purpose and function in the cooling system

The presented Thermostat Water Pump BMW X5 E70 3.0si N52N Petrol Engine Cooling Unit works with the N52N petrol engine in the BMW X5 E70 3.0si model, responsible for controlling coolant flow and maintaining stable thermal parameters. A properly functioning thermostat and water pump assembly reduces the risk of engine overheating, as well as excessively low operating temperatures, which is important for fuel consumption and the protection of mechanical components.

Combining the functions of temperature regulation and forced fluid circulation in a single assembly simplifies the cooling system architecture, facilitates diagnostics and maintenance, and allows for the preservation of factory engine performance characteristics.

Benefits of using an original BMW component

Using a component from the BMW family ensures a proper fit for mounting points, connectors, and cooling system hoses. This reduces the risk of leaks, installation stress, and incorrect positioning of the component relative to the engine block.

Key advantages include, among others:

• maintaining factory characteristics for thermostat opening and coolant flow,
• consistency with the original cooling system architecture of the petrol engine,
• easier diagnostics based on BMW service documentation,
• reduced risk of compatibility issues with sensors and accessories.

For the user, this means predictable engine behavior under various load conditions and the ability to maintain operating parameters close to factory specifications.

Performance and installation characteristics

The element from the Thermostats and housings group is designed to operate in a petrol engine cooling system, where it is exposed to variable temperatures and fluid pressure. The design provided by the vehicle manufacturer allows for stable cooperation with other system components, such as the radiator, flexible hoses, or the expansion tank.

Replacing the thermostat and water pump assembly is particularly recommended in case of:

• symptoms of engine overheating or undercooling,
• detected leaks in the area of the thermostat housing,
• planned major cooling system service (e.g., replacing coolant, hoses, radiator).

Using this component allows for an economical repair while maintaining the original design, which is especially important for vehicles that are used intensively or have higher mileage.

Integration with the petrol engine system

In the N52N petrol engine, the proper operation of the thermostat and water pump has a direct impact on the temperature stability of the cylinder head, block, and engine oil. Maintaining the appropriate thermal range promotes uniform thermal expansion of components, which reduces mechanical stress and can limit the wear of seals and moving parts.

A properly selected thermostat and water pump assembly also supports:

• fuel-air mixture combustion efficiency,
• stability of the engine control system,
• maintaining appropriate conditions for the lubrication system.

Service expansion 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 thermostat housings, connectors, or additional temperature control modules, check the available parts in the BMW Thermostats and housings category.

For users interested in a broader context of BMW engine selection and operating costs on the secondary market, an article comparing popular diesel engines may be helpful – more information can be found in the material: BMW N47 vs M57 / M57N / M57N2 – a ranking of legendary diesels.