BMW 1 3 Series F20 F21 F30 Protection Cover Plate Brake Disc Front Left N/S

BMW 1 3 Series F20 F21 F30 Protection Cover Plate Brake Disc Front Left N/S is a factory-original braking system component, specifically designed for the front axle on the driver's side. This used, genuine cover plate provides stable protection for the brake disc against dirt, moisture, and excessive carbon buildup, supporting even brake performance and proper ventilation in the wheel area.

Specifications and technical data

• SKU: 6873417
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6873417
• Substitutable numbers: 34106873417, 6873417, 34116792235, 6792235
• Location on the vehicle: Front, Left
• Category: Brake Disc Rotors

Purpose and function in the braking system

The brake disc cover plate mounted on the front left side plays a key role in protecting the working surface of the disc and associated components. It secures the system against:

• direct exposure to water and mud thrown from under the wheel,
• excessive accumulation of stones and fine debris,
• accelerated wear of the disc and pads resulting from operation in a contaminated environment.

Thanks to its properly shaped geometry, the cover helps maintain stable operating conditions for the brake disc, which promotes consistent brake performance and reduces the risk of uneven wear.

Compatibility with BMW 1 and 3 Series (F20, F21, F30)

The presented cover plate has been designed as a component dedicated to selected F-generation BMW 1 and 3 Series models, which translates into:

• precise fitment to the hub and brake disc on the front axle,
• compatibility with factory mounting points,
• preservation of the original airflow geometry within the brake area.

The original BMW origin means that the component was designed with the specific thermal and mechanical loads occurring in these models in mind, which facilitates installation and eliminates the need for any modifications.

Benefits of using a genuine, used cover plate

Using a genuine, used brake disc cover plate in a BMW allows you to combine economic aspects with the preservation of factory system parameters. In practice, this means:

• lower repair costs compared to a new part while maintaining OEM construction,
• no compatibility issues characteristic of aftermarket replacements with imprecise dimensions,
• maintaining the consistency of the braking system with other factory components.

This solution is particularly beneficial for servicing vehicles used intensively, where both reliability and rational maintenance costs are important.

Professional installation and operation

The front left brake disc cover plate is a component whose installation should be entrusted to a workshop familiar with the specifics of the BMW F platform. Proper positioning relative to the disc and hub ensures:

• no rubbing against the disc during system operation,
• proper drainage of contaminants and water,
• maintenance of the appropriate rigidity of the entire brake assembly.

During any intervention in the braking system, it is recommended to check the condition of the covers on both sides of the front axle to maintain uniform operating conditions for the left and right brakes.

If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other elements from the same group, such as discs, pads, or brake lines, check out the available parts in the BMW Brake Discs category.

To better plan your brake system service and make informed choices when selecting recycled parts, it is worth reading practical tips on the selection and operation of components – they are discussed in detail in the article Brake calipers under the microscope: How to effectively reduce brake system repair costs by choosing proven recycled parts.