Ford Focus St-2 Mk2 Upper Door Grille Speaker Cover Left N/S 4M51-18C863-AGW

Ford Focus St-2 Mk2 Upper Door Grille Speaker Cover Left N/S is an original trim component from the Trims, decorative strips and decorations category, designed for installation on the driver's side. This part ensures an aesthetic finish to the door interior, provides stable speaker mounting, and maintains a consistent look for the upholstery in the sporty ST-2 version.

Specifications and technical data

• SKU: 1376078
• Mark: Ford
• Condition: Used
• OEM Part Number: 4M5118C863AG3YYW
• Substitutable numbers: 4M51-18C863-AG, 4M5118C863AG, 4M511-8C863-AG3YYW, 4M5118C863AG3YYW, 1376078, 4M51-18C863-AGW, 4M5118C863AGW
• Location on the vehicle: Left
• Part type: Speaker Cover
• Category: Trim

Purpose and function of the component

The upper door speaker cover is responsible for precisely masking the speaker basket and mounting holes without restricting sound propagation. Thanks to its tailored geometry and the correct grille profile, the component helps maintain proper acoustic conditions in the cabin, which is particularly important in dynamic versions equipped with advanced audio systems. The product is dedicated for installation on the left side of the vehicle, which guarantees a correct fit with the shape of the driver's door and the dashboard line. Using an original cover allows you to maintain the factory look of the interior and avoid issues with imprecise fitment typical of aftermarket replacements.

Construction and interior fitment

The speaker cover features a door grille design that combines protective and aesthetic functions. The density and layout of the perforations are selected to:

• protect the speaker diaphragm from accidental mechanical damage,
• allow for free airflow and sound transmission,
• maintain a consistent appearance with other door trim elements. Original mounting points allow for stable seating in the door panel without the need for additional modifications. As a result, installation is predictable, and the risk of looseness, rattles, or resonance while driving is minimized.

Performance characteristics and installation

The item comes from a vehicle dismantling process, meaning it is a used part that retains the functionality and geometry characteristic of factory equipment. In practice, this translates into:

• a secure fit to the Ford Focus St-2 Mk2 door structure,
• preservation of the original interior styling line,
• the possibility of direct replacement for a damaged or missing cover. Installation involves seating the grille into the factory-prepared mounting points in the door upholstery. With proper removal of the old element and inspection of the clips, the new cover can be installed without the need for additional adapters.

Use in service and interior restoration

Replacing the speaker cover is a common step during interior restoration after a collision, bodywork repairs, or audio system upgrades. Using an original trim allows you to:

• restore the consistent look of the door panel after damage,
• avoid differences in texture and color between individual trim elements,
• maintain proper sound projection from the tweeter or mid-range speaker. For workshops specializing in Ford models, this is a practical solution that shortens repair time and reduces the risk of complaints related to the mismatch of decorative elements.

Related Ford trim elements

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

Technical knowledge and purchasing used parts

When working on a vehicle's interior, repairs in other systems, including the fuel system, are often carried out in parallel. If you are considering using dismantled parts in this area as well and want to limit the risk of operational problems, it is worth reading our guide on selecting fuel system components: Fuel dosing problems – what to look for when buying a used injection pump and fuel rails.