BMW F44 Gran Coupé Window Washer Tank Filler Neck Reservoir Container 7488326

BMW F44 Gran Coupé Window Washer Tank Filler Neck Reservoir Container is an original washer system component designed for diesel engine models. Thanks to its factory-fit for the Gran Coupé body, it ensures secure mounting, leak-proof fluid routing, and convenient service access under the hood, which translates into stable operation of the entire washer system and safe visibility in all conditions.

Specifications and technical data

• SKU: 7488326
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7488326
• Substitutable numbers: 61669879310, 9879310, 7488326
• Fuel type: Diesel
• Part type: Reservoir
• Category: Washer Pumps, Reservoirs & Nozzles

Purpose and compatibility

The presented washer fluid reservoir filler neck is designed specifically for the BMW F44 Gran Coupé body with a diesel engine. This ensures the preservation of factory geometry, proper routing of the hose to the reservoir, and correct positioning of the connectors and mounts relative to the engine bay components. The original BMW origin guarantees compatibility with factory brackets, clips, and seals, which minimizes the risk of stress, leaks, or collisions with other components in the engine bay.

Function in the washer system

The filler neck plays a key role in the group of components such as Washer fluid reservoirs, pumps, and nozzles, being responsible for:

• safe and convenient refilling of washer fluid without the risk of spilling,
• a stable connection to the reservoir, reducing the possibility of leaks,
• protection against contaminants entering the system, which promotes a longer service life for pumps and nozzles,
• maintaining proper hose routing in the engine bay, which is especially important in diesel versions where space is highly utilized. By maintaining the original design, the washer system maintains stable operating pressure and even fluid delivery to the windshield, which translates into clear visibility and driving comfort in rain, slush, or while driving at night.

Characteristics of the used component

The offered filler neck is a used component, sourced from a dismantled BMW vehicle. This type of part allows for maintaining factory quality and fitment while reducing repair costs compared to a new component. The original geometry and material used by the manufacturer promote durability after reinstallation, provided that proper installation and seal inspection are performed. Choosing an original, used component is particularly beneficial for passive components such as the washer fluid reservoir filler neck, where correct geometry, tightness, and compatibility with the rest of the system are what matters most.

Benefits of using an original filler neck

Using a factory filler neck in a BMW F44 Gran Coupé brings a number of practical benefits:

• Precise fit – no need for modifications, drilling, or custom mounts.
• Stable mounting in the engine bay – reduced vibrations and lower risk of cracks in the long term.
• Consistency with other washer system components – reservoir, pump, and nozzles.
• Cost savings while maintaining OEM quality – especially important for comprehensive repairs. For users who want to better understand the relationships between individual vehicle components, including selecting parts by factory numbers, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, where practical principles of diagnostics and component selection by OEM markings are discussed.

Expansion and service of the BMW washer system

If you are planning a comprehensive repair or upgrade of the area responsible for windshield cleanliness in your BMW and need other elements from the same group, such as additional reservoirs, pumps, or washer nozzles, check out the available parts in the category BMW washer fluid reservoirs, pumps, and nozzles. Such an approach allows you to renew the entire washer system in one service stage, reduce the number of service downtimes, and ensure consistent operation of all components, which is especially important in modern BMW models with extensive engine bay packaging.