BMW Z4 E87 E85 E90 N46 Petrol Mechanical Coolant Pump 7574119

BMW Z4 E87 E85 E90 N46 Petrol Mechanical Coolant Pump is an original component from the Water pumps category, designed for BMW N46 petrol engines used in models such as the Z4, 1 Series, and 3 Series. This used OEM part ensures a factory-standard fit for the cooling system, which facilitates installation and reduces the risk of operational issues.

Specifications and technical data

• SKU: 7574119-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7574119
• Substitutable numbers: 11517574119, 7574119
• Fuel type: Petrol
• Category: Water Pumps

Purpose and function in the cooling system

The presented water pump is responsible for the forced circulation of coolant in BMW N46 petrol engines. A correctly selected pump stabilizes the engine's operating temperature, supports uniform heat dissipation from the block and cylinder head, and reduces the risk of overheating during city and highway driving.

Thanks to its OEM-compliant design, the pump works seamlessly with the factory thermostat, radiator, and hoses, maintaining the flow parameters specified by the vehicle manufacturer. This solution is particularly beneficial for servicing petrol engines where consistency and stability of the cooling system are required.

Compatibility with N46 petrol engines

The pump has been designed to work with the N46 family of petrol engines used in selected BMW Z4, 1 Series (E87), and 3 Series (E90) models. This ensures the correct geometry of mounting points, proper positioning of connection ports, and compatibility with the engine's original pump drive.

It is always recommended to verify part selection based on the OEM number or vehicle data to ensure full compatibility with the specific engine version and model year. Using the correct water pump translates into stable engine performance, uniform warm-up, and proper operation of the interior heating system.

Benefits of using an original water pump

Using an original water pump in a BMW N46 petrol engine offers a number of practical benefits:

• factory-standard fit for the cooling system without the need for modifications,
• maintenance of coolant flow parameters specified for the given engine,
• consistency with other system components, such as the radiator or thermostat,
• reduced risk of leaks resulting from improper fitment.

For the user, this means more predictable operation, easier diagnostics of potential faults, and the ability to service the cooling system according to manufacturer procedures. In the case of petrol engines, maintaining a stable operating temperature is particularly important, which is why choosing the right water pump has a direct impact on the engine's durability.

Part condition and installation aspects

The offered water pump is a used component, which allows for cost-effective cooling system repair while maintaining the manufacturer's original specifications. Before installation, it is recommended to perform a standard inspection of related components, such as the drive belt, idler pulleys, and the integrity of hoses and the radiator.

Replacing the water pump in an N46 petrol engine should be carried out in accordance with BMW service procedures, ensuring the correct sequence for bleeding the cooling system and using coolant with parameters compliant with manufacturer recommendations. Properly performed installation minimizes the risk of bearing noise, leaks, and fluctuations in engine operating temperature.

Expanding cooling and fuel system service

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

For a better understanding of the relationship between the cooling system and engine fuel supply, it is worth reading our guide on fuel system diagnostics and maintenance – it describes in detail how to select components by OEM numbers, as well as principles of regeneration and operation, which you can find in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Summary

BMW Z4 E87 E85 E90 N46 Petrol Mechanical Coolant Pump is an original component from the Water pumps category, designed for BMW N46 family petrol engines. It ensures a factory-standard fit for the cooling system, supports stable engine operating temperature, and enables service in accordance with manufacturer guidelines, making it a practical choice for repairing or upgrading the cooling system in your BMW.