BMW F20 F22 F30 LCI Mechanical Coolant Water Pump M140i 340i B58 8632585

BMW F20 F22 F30 LCI Mechanical Coolant Water Pump M140i 340i B58 is an original cooling system component from the Water pumps group, designed for BMW models with the B58 engine. The mechanical design ensures stable cooling system performance, which translates into a safe operating temperature for the engine and predictable engine behavior under various load conditions.

Specifications and technical data

• SKU: 5B51A35
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5B51A35
• Substitutable numbers: 11515B51A35, 5B51A35, 11518632585, 8632585
• Part type: Engine Water Pump
• Category: Water Pumps

Technical characteristics and intended use

The presented water pump has been designed as a component of the factory BMW cooling system, compatible with the B58 engine in M140i and 340i versions in F20, F22, and F30 LCI body styles. The mechanical drive of the pump guarantees a predictable coolant flow dependent on engine speed, which is particularly important in turbocharged units operating under higher thermal loads. The original design ensures a proper fit with factory cooling channels, connectors, and mounts, which facilitates installation and minimizes the risk of leaks. As a result, the cooling system maintains the parameters specified by the manufacturer, and the engine maintains a stable operating temperature both in city traffic and during dynamic driving.

Benefits of using an original BMW pump

Using an original water pump in the B58 engine allows for maintaining the consistency of the entire cooling system with the factory BMW specification. Key advantages of this solution include:

• secure fit to the engine block and accessories, without the need for installation modifications,
• preservation of factory coolant flow and system operating characteristics,
• compatibility with original hoses, seals, and drive accessories,
• consistency with engine control maps that assume a specific pump performance. For M140i and 340i units, where the B58 engine generates high thermal loads, maintaining factory-quality cooling system components has a direct impact on the durability of the engine and the stability of its performance.

Condition, verification, and part number matching

The item comes from the BMW offer and is classified as used, which means that before installation, it is worth verifying its compatibility with the specific vehicle configuration and its operational condition. When selecting a water pump for a BMW F20, F22, or F30 LCI with a B58 engine, it is crucial to compare the OEM part number and available interchangeable numbers with the vehicle documentation or the existing component. To reduce the risk of errors when purchasing online, it is worth using catalog numbers and manufacturer markings. Practical tips on verifying compatibility by OEM numbers can be found in the guide how to safely verify BMW parts by OEM numbers when shopping online, which will facilitate the selection of the correct pump for a specific engine version and model year.

The importance of a functional water pump in the cooling system

A functional water pump in the B58 engine is responsible for the continuous circulation of coolant between the engine block, cylinder head, and radiator, which prevents overheating and local hot spots. In the case of turbocharged units, improper cooling system operation can lead to accelerated wear of internal components, performance drops, and problems with seal durability. If you want to better understand how individual cooling system components – including the water pump – affect engine safety, it is worth reading the article on cooling system failures and the differences between original parts and cheap replacements. This will allow you to consciously approach the selection of components and avoid apparent savings that may generate higher costs in the future.

Expanding the cooling system in BMWs with the B58 engine

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 pumps, housings, or mounting elements, check the available parts in the BMW Water pumps category.