BMW F80 F82 F87 M Coolant Auxiliary Water Pump Electric Petrol 6834917

BMW F80 F82 F87 M Coolant Auxiliary Water Pump Electric Petrol is a cooling system component designed for M-series sports models, engineered to work with petrol engines. As part of the Water pumps group, it supports coolant circulation under high-load conditions, stabilizing the temperature of the engine unit and auxiliary equipment.

Specifications and technical data

• SKU: 6834917
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6834917
• Substitutable numbers: 6834917, 64116834917, 9147359, 64119147359
• Fuel type: Petrol
• Category: Water Pumps

Purpose and function in the cooling system

The auxiliary water pump in BMW F80, F82, and F87 M models is responsible for supporting the main cooling circuit, especially in situations where the engine is under heavy load or when temperature control is required after the engine has been switched off. Electric control allows for precise dosing of coolant flow regardless of engine speed, which promotes stable operation of the power unit.

This solution is essential in high-performance vehicles, where the cooling system must react quickly and predictably. The auxiliary water pump helps reduce the risk of overheating engine components and accessories, which translates into more consistent performance and better protection of components.

Electrical construction and operating characteristics

The pump is electrically driven, allowing its operation to be controlled by the vehicle's electronics according to current thermal needs. This type of design allows for:

• maintaining coolant flow even at low engine speeds or after the engine is turned off,
• more flexible temperature management in various cooling circuits,
• better adaptation to the characteristics of petrol engines in M versions.

Such a solution supports the durability of the power unit and improves operational comfort, especially during dynamic driving or frequent use of the full power range.

Benefits of using an original BMW pump

Choosing an original pump from the BMW group means maintaining factory flow and pressure parameters in the cooling system. As a result:

• compatibility with the factory electronic control system is maintained,
• the risk of problems with bleeding and cooling system operation is reduced,
• the thermal characteristics of the engine assumed by the manufacturer are maintained.

This element is particularly important in sports-oriented vehicles, where a stable operating temperature affects performance consistency and operational safety.

Condition, fitment, and practical application

The offered pump comes from a vehicle and is a used part, which allows for an economical replacement while maintaining the original specification. It is intended for installation in BMW F80, F82, and F87 M models with petrol engines that utilize an additional electric cooling circuit. Before installation, a standard check of the cooling system is recommended, including the condition of hoses, connectors, and the quality of the coolant.

A properly selected and functional auxiliary water pump supports even heat distribution, which is important both in daily driving and during intensive use on the road or track.

Cooling system expansion and component selection

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 main coolant pumps, cooling hoses, or circulation control modules, check the available parts in the BMW Water pumps category.

To better understand the relationships between the cooling system and engine power supply, as well as the principles of selecting components by OEM numbers, it is worth reading our guide: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. It allows you to organize your knowledge about the operation of auxiliary systems in modern power units.