Mercedes W177 Door Rear Right O/S 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 Right O/S Kosmos Cosmic Black Metallic - 191 is an original body component from the Doors and door panels category, designed for installation on the rear right side of W177 series models. This used panel in Kosmos Black Metallic allows for a technically correct body repair without the need for aftermarket replacements with uncertain fitment.

Specifications and technical data

• SKU: A1777301400-KB3
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1777301400
• Substitutable numbers: A1777301400, A 177 730 14 00
• Location on the vehicle: Rear, Right
• Color: Kosmos Black Metallic - 191
• Category: Doors & Door Skins

Purpose and fitment

The presented rear right door is designed as a structural body component for Mercedes W177 class vehicles, maintaining factory geometry and mounting points. Its placement on the vehicle in the rear right section of the body ensures compatibility with the original body lines and proper operation with hinges, locks, and seals.

By using an original door panel from the same model series, it is possible to maintain the structural integrity of the pillar, rocker panel, and roof, which is important for both safety and the subsequent adjustment of gaps between body elements.

Kosmos Black Metallic color – benefits for repair

The door is finished in Kosmos Black Metallic, marked with the paint code specific to this metallic black variant. Using the original shade facilitates the painter's work – in many cases, it allows for limiting the scope of painting to the connection points with adjacent panels, which reduces repair time and material costs.

The metallic black from the Kosmos Black series effectively masks minor shade differences when properly blended, which is particularly important for spot repairs and restorations of premium class vehicles.

Characteristics of the used component

The element comes from a used vehicle, thus retaining the factory sheet metal structure and original stampings characteristic of the W177. A used body component is a solution often chosen for post-accident repairs when the priority is to maintain the original construction and compatibility with factory door accessories.

Compared to aftermarket replacements, original doors from this series ensure predictable fitment with the fender, rocker panel, and rear bumper, which facilitates gap alignment and minimizes the need for additional bodywork.

Application in body repairs

The rear right door for the Mercedes W177 is suitable for both post-collision repairs and replacing an element due to corrosion or mechanical damage. Thanks to the preserved factory profile, it is possible to transfer equipment from the previous door, such as the window, wiring harness, or lock, without the need for structural modifications.

Choosing an original element from the Doors and door panels category allows you to maintain the visual consistency of the vehicle and facilitates future resale, as repairs performed using OEM components are better perceived on the secondary market.

Complementary Mercedes body elements

If you are planning a comprehensive repair or upgrade of the side body area in your Mercedes and need other elements from the same group, such as door skins, exterior panels, or additional reinforcements, check the available parts in the Mercedes Doors and door panels category.

Why choose a used OEM part

For body repairs, many users consciously choose used original parts instead of new aftermarket replacements, guided by fitment, material quality, and ease of installation. If you want to better understand the differences between these solutions and learn practical examples from popular models, read the article 5 reasons why a used OEM part is a better choice than an aftermarket replacement.