BMW E87 E90 N46 Petrol Mechanical Coolant Water Cooling Pump 7529370

BMW E87 E90 N46 Petrol Mechanical Coolant Water Cooling Pump is an original component from the Water pumps group, designed for N46 petrol engines in selected BMW E87, E85, and E90 series models. This used OEM part ensures a factory-standard fit within the cooling system, which facilitates installation and reduces the risk of operational issues after replacement.

Specifications and technical data

• SKU: 7574119-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7574119
• Substitutable numbers: 11517574119, 7574119, 7529370, 7500335, 32427500335, 11517529370, KZ
• Fuel type: Petrol
• Category: Water Pumps

Purpose and role in the cooling system

The water pump in the N46 engine is responsible for the forced circulation of coolant between the engine block, cylinder head, and radiator, stabilizing the operating temperature of the power unit. A correctly selected pump minimizes the risk of overheating, uneven temperature distribution, and accelerated wear of mating components, such as gaskets or the cylinder head.

The presented pump is structurally matched to petrol engines, which means it is compatible with the thermal characteristics of the N46 unit and the parameters of the cooling system used in the BMW E87, E85, and E90.

Advantages of using an original BMW pump

Choosing an original water pump from the BMW OE group translates into:

• factory-standard fitment for engine mounts and accessories,
• proper cooperation with the drive belt and other system components,
• stable operating parameters across the full load range of the petrol unit,
• reduced risk of leaks and improper coolant circulation.

Thanks to this, the water pump can be used both for standard maintenance replacements and for more extensive cooling system servicing, e.g., after a thermostat failure or engine overheating.

Selection by numbers and compatibility

The element has a dedicated OEM part number and a set of interchangeable numbers, which facilitates precise identification and selection for a specific engine variant and vehicle year. When matching the pump, it is recommended to use the VIN and technical documentation to confirm full compatibility with the given configuration of the BMW E87, E85, or E90 series.

The presence of reference numbers also allows for the verification of compatibility with other versions of N46 engine accessories, which is important for repairs performed using used components.

Condition, installation, and service application

The water pump is a used item, which in service practice means the possibility of an economical repair while maintaining the manufacturer's original specifications. Before installation, it is recommended to perform a standard check of tightness, axial play, and the condition of surfaces mating with the cooling system seals.

During replacement, it is worth simultaneously verifying the condition of the drive belt, guide pulleys, and the coolant itself, in order to restore the full efficiency of the entire cooling circuit in the N46 petrol engine in a single service operation.

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 housings, impellers, or additional bodies, check the available parts in the BMW Water pumps category.

Technical support and service knowledge

When selecting components for supply systems and related sub-assemblies, a guide on diagnostics and part identification by OEM and VIN numbers may be helpful – a detailed discussion can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", where practical methods of verifying compatibility and operating principles are described.

If you want to consciously combine the servicing of your BMW with an economical and environmental approach, it is worth learning about the advantages of reusing automotive components – these are discussed in more detail in the article "Eco-driving: discover the benefits of used car parts", which shows how used sub-assemblies can support sustainable vehicle operation.