Corner Moulding BMW F32 F33 F36 F82 F83 M4 LCI Interior Left N/S 7284419

Visual condition of the part 

The product shows signs of use visible in the photos. 

Corner Moulding BMW F32 F33 F36 F82 F83 M4 LCI Interior Left N/S is an original door trim component designed for left-side installation in 4 Series and M4 LCI (Life Cycle Impulse) models. This factory-original triangular cover ensures a seamless look for the door panel, proper sound guidance from the speaker, and an aesthetic finish for the mirror pillar. Thanks to its precise fitment to BMW's design, it serves as both a functional and visual complement to the factory audio system.

Specifications and technical data

• SKU: 7284419
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7401151
• Substitutable numbers: 51337401151, 7401151, 51337284419, 7284419
• Location on the vehicle: Left
• Category: Trim

Purpose and BMW Compatibility

This cover is specifically designed for the BMW F32, F33, F36 series and the high-performance F82 and F83 M4 LCI models. The component is installed on the left side of the door, in the mirror triangle area, where it covers the tweeter and a section of the door wiring. The design is based on factory mounting points, allowing for secure installation without modifications and maintaining the original interior geometry.

Function of the Triangular Speaker Cover

The cover performs several important technical and practical functions:

• stabilizes and masks the speaker in the front part of the door,
• visually organizes the area near the side mirror,
• prevents debris from entering the door interior,
• supports proper sound direction towards the cabin.

As a result, the vehicle's interior maintains a consistent, factory-original appearance, while acoustic elements are properly protected and seated.

Characteristics of the Trim Component

The cover belongs to the Cladding, trim strips, and decorations group, meaning it is responsible for both aesthetics and the protection of critical door areas. The triangular profile is matched to the shape of the door frame and mirror base, which minimizes the risk of looseness, rattles, and unwanted vibrations while driving. Using an original BMW component allows you to maintain a uniform texture and styling line across the entire door card.

Condition, Origin, and Service Application

The item comes from the BMW line and is a used part, which in practice means a perfect fit for factory mounts and compatibility with the door construction of the listed models. This type of cover is ideal for replacing a damaged triangle after a collision or mirror removal, as well as for completing missing interior elements after previous repairs. Choosing an original cover helps reduce the risk of installation issues common with aftermarket replacements.

Use in Repairs and Interior Upgrades

The left door triangular speaker cover is particularly useful for work related to:

• restoring driver-side door upholstery,
• replacing or servicing tweeters,
• repairing or replacing side mirrors,
• completing missing parts after door disassembly.

Using an original trim component helps maintain technically correct fitment and reduces unwanted noises resulting from imprecise installation.

If you are planning a comprehensive repair or upgrade of the door area in your BMW and need other items from the same group, such as covers, trim strips, or decorative overlays, check out the available parts in the BMW Cladding, trim strips, and decorations category.

To better evaluate the benefits of choosing original, used BMW trim components and to clear up any doubts regarding their durability, it is worth reading the article Used car parts: Myths and facts you need to know, which practically discusses the most important issues related to such a choice.