Mercedes W177 Door Rear Left N/S A-Class Kosmos Cosmic Black Metallic - 191

Listing details and visual condition of the part

Possible scratches and paint chips – condition as shown in the product photos.

The offer applies to the bare door – without handle, window, lock, trims, or any other accessories.

There is an option to purchase a complete door for an additional fee of 80 GBP.

Mercedes W177 Door Rear Left N/S A-Class Kosmos Cosmic Black Metallic is an original body component from the Doors and door panels category, designed for precise installation in the rear left section of the vehicle. This solution allows for maintaining a consistent side body line, correct body geometry, and an aesthetic finish in the characteristic Kosmos Cosmic Black Metallic – 191 paint.

Specifications and technical data

• SKU: A1777301300-KB
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777301300
• Substitutable numbers: A1777301300, A 177 730 13 00
• Weight: 150
• Location on the vehicle: Rear, Left
• Color: Kosmos Black Metallic - 191
• Category: Doors & Door Skins

Purpose and fitment for Mercedes W177 A‑Class

The presented door has been designed specifically for the Mercedes W177 A‑Class platform, taking into account factory hinge mounting points, locks, and seals. Its placement in the rear left zone ensures compatibility with the factory pillar and sill construction, which facilitates installation and subsequent adjustment of gaps between body panels.

Thanks to the preservation of the original geometry of the outer and inner panel, the door works with factory windows, lifting mechanisms, and fittings, allowing for the efficient transfer of equipment from the old component without the need for modifications.

Characteristics of the Kosmos Cosmic Black Metallic – 191 paint

The Kosmos Cosmic Black Metallic – 191 color is a characteristic metallic black used in the Mercedes range, providing an elegant, understated look to the body. The metallic structure of the paint improves the visual depth of the surface while making color matching easier during local repairs and polishing.

Choosing a door in the same shade as the rest of the body limits the scope of paint work and allows for shortening the time required to restore the vehicle to full visual condition. This is particularly important in post-accident repairs, where both correct geometry and color consistency of the entire side plane are essential.

Condition, construction, and use in body repairs

The item comes from the used Mercedes body parts segment, which allows for an economical yet technically correct vehicle repair. The original door construction ensures proper side rigidity, correct lock operation, and stable window guidance in the tracks.

The rear left door for the W177 A‑Class is particularly suitable for:

• repairs after side collisions in the rear body area,
• vehicle renovations where corrosion or mechanical damage to the door panel has occurred,
• restoring factory fitment and side lines after previous, improper body repairs.

Thanks to the preservation of the factory construction, installation proceeds based on standard service procedures, without the need to interfere with the load-bearing structure of the body.

Benefits of using original Mercedes Doors and door panels

Using an original door in Kosmos Cosmic Black Metallic allows for reducing the risk of fitment issues typical of aftermarket replacements. Key advantages include:

• factory fitment with fenders, sills, and pillars,
• preservation of the side rigidity designed by the manufacturer,
• easier adjustment of the lock and hinges,
• possibility of transferring original internal equipment components.

Such a solution is particularly beneficial for body and paint shops as well as users who want to keep the vehicle in a technical and visual state as close to the factory condition as possible.

If you are planning a comprehensive repair or modernization of the side body zone in your Mercedes and need other elements from the same group, such as door skins, outer panels, or door frame structures, check out the available parts in the Mercedes Doors and door panels category.

Additional technical information and service knowledge

For users interested in a broader technical context of Mercedes power units, including operating characteristics and typical faults, the article dedicated to the OM642 3.0 V6 CDI engine may be helpful, where, among other things, the impact of the injection system and turbocharging on performance and refinement is discussed – details can be found in the material The second life of the Mercedes OM642 engine – how injectors and the turbocharger restore the power of the 3.0 V6 CDI.