BMW E87 E90 E91 E92 E93 LCi Additional Water Pump 8369806

BMW E87 E90 E91 E92 E93 LCi Additional Water Pump is an original BMW cooling system component, combining the function of an auxiliary coolant circulation pump with a precise flow control solenoid valve. This OEM BMW component ensures stable thermal system operation, supporting interior heating comfort and protecting the engine from overheating. Thanks to its factory design, it is perfectly matched to the 1 Series and 3 Series E-generation models in LCI facelift versions.

Specifications and technical data

• SKU: 8369806
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8369806
• Substitutable numbers: 64118369806, 8369806
• Category: Other Air Conditioning & Heating

Purpose and function in the BMW cooling system

The additional water pump with solenoid valve in BMW E87, E90, E91, E92, and E93 LCi models is responsible for supporting coolant circulation in the area of the heater core and components associated with the heating system. The electrically controlled valve allows for precise flow regulation, which translates into a stable cabin temperature and uniform heat dissipation from the engine unit.

In practice, this assembly:

• supports the main coolant pump under increased thermal load conditions,
• enables smoother control of the interior heating,
• helps maintain proper engine operating parameters under varying driving conditions.

Original BMW part – fitment and compatibility

The presented element comes from the BMW OE line, which means factory manufacturing standards, correct electrical connectors, and appropriate connection port geometry. As a result, installation in dedicated E-series models is performed without the need for any modifications to the wiring, and the system retains the parameters specified by the manufacturer.

The original design ensures:

• consistency with the vehicle's factory electronic control,
• correct operating characteristics of the pump and solenoid valve,
• maintenance of the designed cooling and heating system efficiency.

Condition of the item and benefits of choosing used OEM

The offered additional water pump with solenoid valve is a used OEM component, which allows for a reasonable cost while maintaining the original BMW technical specifications. For many users, this is a practical solution for maintenance repairs where compliance with the factory design and predictable behavior in the cooling system are the priority.

Choosing a used OEM element offers, among other things:

• the ability to maintain the original cooling system architecture,
• better fitment than many aftermarket replacements,
• cost-effective repair while maintaining high manufacturing quality.

The importance of a properly functioning additional pump and solenoid valve

A functional additional water pump with solenoid valve has a direct impact on engine operating temperature stability and thermal comfort inside the vehicle. Improper coolant flow can result in weaker cabin heating, uneven temperature distribution in the system, or an increased risk of localized overheating. Replacing a worn-out element with an original BMW component helps restore the correct operating parameters of the entire circuit.

System expansion – other elements from this group

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 additional coolant pumps, flow control solenoid valves, or auxiliary cooling system modules, check the available parts in the Other BMW category.

Technical knowledge and part selection

When diagnosing cooling system problems and selecting the right components, knowledge of solutions used in other brands and high-performance versions can be helpful. In this context, it is worth reading the comparative material on sports drivetrains and braking systems, available in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers design components that work with the engine and cooling system.

Additionally, when planning service during high-temperature periods, practical tips regarding the operation and selection of used cooling system components may be useful – you will find them in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which discusses the impact of thermal loads on component durability and possibilities for optimizing repair costs.