Mini One D R50 W17 Diesel Electric Water Electric Flow Heater Unit 6918806

Mini One D R50 W17 Water Heater 6918806 is an original thermal system component designed for BMW models with diesel engines. This specialized heater supports fluid temperature stabilization, which translates to more even engine operation. By using a solution dedicated to the specific configuration of the Mini One D R50 W17, the component ensures consistency with the factory cooling system architecture and predictable performance during operation.

Specifications and technical data

• SKU: 6918806-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6918806
• Substitutable numbers: 64129145439, 9145439, 64126902238, 6902238, 64120304848, 0304848, 64126918806, 6918806, 64126904668, 6904668, 64126900704, 6900704
• Fuel type: Diesel
• Category: Other Air Conditioning & Heating

Application and Function in the Thermal System

The water heater in the Mini One D R50 W17 is responsible for assisting fluid circulation in Diesel engines, especially in conditions of lower ambient temperatures. A properly functioning component:

• accelerates the achievement of the coolant's operating temperature,
• stabilizes engine operating conditions during cold starts,
• limits temperature fluctuations in the system, which contributes to the durability of other components.

Thanks to its adaptation to the specific Mini One D R50 W17 platform, the heater works with factory hoses, sensors, and control systems, which facilitates installation and subsequent diagnostics.

Compatibility and Replacement Numbers

The offered water heater is part of the Other category within the BMW range, but it has an assigned OEM part number and a set of interchangeable numbers. This means the component may appear in various catalogs and configurations while retaining the same function and mounting geometry. The presence of reference numbers facilitates:

• verification of compatibility with a specific Mini One D variant,
• comparison with the component removed from the vehicle,
• part selection based on manufacturer catalog data.

Before purchasing, it is advisable to compare the designations with the service documentation or the removed component to ensure that the selected heater will work correctly with the existing system.

Product Characteristics and Condition

The Mini One D R50 W17 water heater comes from the BMW offering and is a used component, allowing for economical repair of the cooling system while maintaining the original construction. This type of component is often chosen in situations where:

• maintaining factory fit and geometry is important,
• an OEM-compliant part is desired,
• the repair is to be cost-optimized compared to purchasing a new component.

The component is intended for diesel-powered vehicles, which is important when selecting parts within the same model family. The thermal system in diesel engines operates under different conditions than in gasoline engines, so using the correct heater is crucial for the proper functioning of the entire system.

Installation and Operational Tips

When replacing the water heater in the Mini One D R50 W17, it is recommended to:

• check the condition of the fluid hoses and clamps,
• check the tightness of connections after the first engine start,
• bleed the cooling system according to the service procedure,
• verify the correct operation of the thermostat and fluid pump.

Regular inspection of the cooling system and proper operation of the heater contribute to the stability of the engine's operating temperature, which promotes even engine operation and reduces the risk of overheating or underheating.

Related Categories and Technical Materials

If you are looking for other elements from the Other BMW category for your car, check out our dedicated offer: other BMW. This will allow you to easily assemble additional cooling system, thermal system, or engine accessory components in one place.

For those interested in comparing technical solutions in sports models and standard versions, we have prepared a guide: Audi RS vs. other models – what lies under the hood and chassis?. The article discusses differences in engine, brake, and chassis construction, helping to better understand the importance of selecting the right service parts.

If you want to maximize the potential of used parts, it is worth familiarizing yourself with practical tips on maintenance and operation: how to extend the lifespan of used car parts. You will find information there on how to care for cooling system and electronic components so that they work stably for a longer time.