BMW 2 Series F45 F46 Active Gran Tourer Water Drain Right O/S Trim Tube 7393790

BMW F45 F46 Right Water Drain is an original body part designed for effective water drainage from the right side of BMW F45 and F46 series vehicles. Thanks to precise fitting to the factory design, it ensures stable water flow and reduces the risk of uncontrolled moisture in critical areas. This is a practical solution for users who want to restore the proper functioning of the water drainage system after body repairs or replacement of body elements.

Specifications and technical data

• SKU: 7393790
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7393790
• Substitutable numbers: 51237393790, 7393790
• Location on the vehicle: Right
• Color: Black
• Category: Other Exterior Parts & Accessories

Purpose and Function of the Water Drain

The right-side water drain in BMW F45/F46 is responsible for controlled water drainage from a selected body area, such as the windshield cowl area, wheel arch edges, or side structure fragments. A correctly installed component:

• stabilizes water flow in the designated drainage channel,
• reduces the risk of moisture accumulation in bodywork crevices,
• supports anti-corrosion protection of adjacent structural elements,
• helps maintain proper water drainage after heavy rainfall or vehicle washing.

Thanks to this, the water drainage system retains its functionality, and the car's operation in everyday weather conditions becomes more predictable.

Fitment for BMW F45/F46 and Mounting Parameters

The drain has been designed with the body structure of BMW F45 and F46 series in mind, which translates to proper alignment with factory mounting points. The element is intended for the right side of the vehicle, which facilitates identification of the correct mounting position during service work.

The black color of the component allows for its aesthetic integration into the windshield cowl area or internal body zones where a neutral, unobtrusive appearance is important. This ensures the drain does not visually disrupt the surroundings while remaining easy to locate during technical inspections.

Material and Usage Characteristics

The water drain is made of plastic adapted for operation in varying weather conditions – from high humidity to temperature fluctuations. The construction is prepared for contact with water, road dirt, and cleaning agents used during vehicle washing.

• The stable geometry of the drainage channel promotes free water flow.
• Properly shaped edges facilitate seating in factory guides or brackets.
• The neutral black color blends well with other technical elements in the windshield cowl or wheel arch compartment.

A component configured in this way allows for restoring the proper flow of the water drainage system without the need for vehicle structure modifications.

Condition, Service Application, and Benefits of Installation

The offered water drain is a used part, making it an attractive solution for users seeking a factory component at a reasonable price. In practice, it will be useful for both accident repairs and for replacing worn or damaged elements of the water drainage system.

Replacing the drain with a functional unit allows for:

• reducing the risk of localized moisture in the right side of the body,
• limiting the possibility of accelerated corrosion in hard-to-reach areas,
• maintaining stable operating conditions for adjacent electrical harnesses and mechanical components.

For workshops and individual users, this means a functional replacement consistent with BMW's design without the need to use aftermarket alternatives with uncertain fitment.

Related Categories and Technical Knowledge

If you are planning a comprehensive repair or modernization of the body area in your BMW and need other parts from the same group, such as covers, mounts, or additional drainage channels, check the available parts in the Other BMW category.

To better understand the structural differences between individual model lines and the impact of technical solutions on vehicle operation, it is worth reading the comparative material on sports versions and standard variants – you will find it in the article Audi RS vs. Other Models – What's Under the Hood and Chassis?.