Rear Wiper Arm BMW F20 F21 LCI Window Tailgate W7241985

Rear Wiper Arm BMW F20 F21 LCI Window Tailgate is an original component from the Wiper arms group, designed for operation on the rear window of compact BMW 1 Series models after the facelift. The design, tailored to the specific body generation, ensures proper blade pressure, stable operation in the rain, and predictable performance in daily use.

Specifications and technical data

• SKU: 7241985-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7241985
• Substitutable numbers: 61617241985, 7241985, 7241984, EM
• Location on the vehicle: Rear
• Category: Wiper Arms

Purpose and fitment

The presented arm is dedicated to the rear part of the vehicle body, where it is responsible for the correct guidance of the blade across the glass. Thanks to a design consistent with BMW's factory specifications, the correct operating angles, mounting geometry, and appropriate stiffness of the entire system are maintained.

The component comes from the BMW line, which means it has been designed for full compatibility with the wiper mechanism, the wiper arm shaft, and the mounting on the tailgate. Such fitment reduces the risk of vibrations, uncleared zones, and premature blade wear.

Construction and technical function

The rear wiper arm in the BMW 1 Series F20/F21 after the facelift operates in a demanding area – on a relatively vertical window exposed to road dirt and water flowing from the roof. The arm's construction ensures:

• stable blade guidance across the entire designed operating area,
• appropriate pressure against the glass at various driving speeds,
• cooperation with the factory drive mechanism and wiper shaft,
• correct resting position on the tailgate.

A system configured in this way translates into clear rear visibility, which is important both when maneuvering and while driving in heavy rain. Consistency with the original BMW design allows for maintaining the vehicle's original performance characteristics.

Performance characteristics and installation

The rear wiper arm is a wear-and-tear component that may eventually suffer from mechanical wear or damage (e.g., as a result of ice on the glass or manual bending). Replacing it with a properly selected component restores:

• even blade pressure along the entire length,
• smooth, quiet operation without skipping,
• correct positioning of the arm relative to the edge of the glass.

The arm is prepared for installation in place of the factory component, which facilitates service and reduces replacement time. Replication of the original geometry eliminates the need for modifying mounts or adjusting the component on the vehicle.

Condition and benefits of choosing a used part

The offered component is in used condition, which in practice means it comes from vehicle dismantling and has been verified for suitability for further use. Choosing such a solution allows for reducing repair costs while maintaining compliance with BMW's factory specifications.

In the case of components such as a wiper arm, it is crucial to maintain stiffness, correct geometry, and a functional mount to the shaft. A used part, selected according to the model and body generation, meets these requirements, providing functionality similar to a factory-installed component.

Expanding the BMW wiper system

If you are planning a comprehensive repair or upgrade of the window and wiper area in your BMW and need other elements from the same group, such as additional arms, mounts, or compatible system components, check the available parts in the BMW Wiper arms category.

For drivers interested in broader drivetrain optimization and matching the car's characteristics to their driving style, practical information on selecting axle ratios and differentials can be found in the article: Dismantled drive axles and differentials – how to choose ratios for your driving style.