BMW F30 F80 M3 Window Trim Door Finisher Side Frame Part Front Left N/S 7258333

BMW F30 F80 M3 Front Left Door Frame Side Trim Strip is an original body part from the Window Seals and Trim group, designed for installation on the driver's side of the front door. Precise fitment to the BMW construction ensures proper window guidance, stable door frame seating, and an aesthetic finish for the side edge.

Specifications and technical data

• SKU: 7258333-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7258333
• Substitutable numbers: 51357258333, 7258333, 51354858321, 4858321
• Weight: 150
• Location on the vehicle: Front, Left
• Part type: Window Trim
• Color: Black
• Category: Window Seals, Gaskets & Trims

Intended Use and Function of the Part

The presented door frame side trim strip has been specifically designed for BMW F-series models, including the M3 version, for the front left side of the vehicle. It is responsible for sealing the window and door frame area, limiting the ingress of water, dirt, and noise into the cabin.

This part works in conjunction with the side window and other door seals, stabilizing its movement during opening and closing. This maintains the correct geometry of the window lifting mechanism and a cohesive side profile of the body.

Construction, Color, and Fitment

The door frame side trim strip is made in black, allowing for a seamless integration with the factory finish of BMW window frames. This color scheme complements both light and dark body paint colors, maintaining a neutral, technical character.

The part is designed for installation in the front left door, utilizing the factory mounting points. The appropriately selected mass of the component contributes to the stability of the frame structure without excessively loading the hinges or door mechanism.

Benefits of Using an Original Frame Trim Strip

Using an original part from the Window Seals and Trim group in a BMW allows for the preservation of factory sealing and acoustic comfort parameters. The precise shape matching the door profile minimizes the risk of air noise at higher speeds and reduces the possibility of moisture accumulation within the frame area.

Key advantages of this solution include:

• maintaining proper window-to-door frame adhesion,
• stable sealing of the window area in the front left door,
• a cohesive appearance of the vehicle's side line due to matched geometry,
• compatibility with factory BMW mounting points.

Condition, Origin, and Service Application

The offered part is from original BMW production and is a used component, allowing for an economical yet technically correct repair of the door area. This type of component is particularly useful for replacing a damaged side frame, post-collision repairs, or eliminating leaks around the window.

It is always advisable to confirm the correct door frame side trim strip for a specific body version based on the OEM part number or interchangeable numbers in BMW service documentation to ensure full compatibility with the vehicle's construction.

Expansion of Service Work and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the door area in your BMW and require other parts from the same group, such as additional frame seals, trim strips, or window guides, check the available parts in the BMW Window Seals and Trim category.

To better understand the importance of using original, used body parts in cars of this brand, it is worth reading the article describing the procedures for selecting parts by OEM numbers and the impact of such parts on vehicle longevity: BMW – Sporty Performance and Precision. How Original Used Parts Extend the Life of the Bavarian Icon?