Mercedes W251 Window Roller Blind Door Rear Left N/S Sun Protection A2518100520

Mercedes W251 Window Roller Blind Door Rear Left N/S Sun Protection is an original, factory-made sunshade designed for installation in the rear left door of R-Class models. As an item from the Sunshades and protective blinds category, it provides effective protection against interior heating and improves the comfort of rear-seat passengers. Thanks to its design, which is tailored to the specific body generation, the roller blind integrates seamlessly with the window line and upholstery, maintaining a cohesive interior look.

Specifications and technical data

• SKU: A2518100520
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2518100520
• Substitutable numbers: A2518100520, A 251 810 05 20, A2518101100, A 251 810 11 00
• Location on the vehicle: Rear, Left
• Category: Sun & Privacy Shades

Purpose and body fitment

The presented roller blind is designed specifically for the rear left door panel of the Mercedes R-Class W251 series. Its placement on the vehicle in the rear side window area ensures that the component fits perfectly into the door frame geometry without interfering with the window lifting mechanism or factory seals. This precise fit reduces the risk of unwanted play, rattling, or friction during window operation.

Protective function and user comfort

The roller blind acts as a mechanical barrier against sunlight, reducing interior heating and limiting glare for rear-seat passengers. In practice, this translates to a more stable cabin temperature, reduced load on the air conditioning system, and higher travel comfort, especially on long journeys and in intense sunlight.

The carefully selected material density allows for outward visibility while simultaneously increasing privacy inside the vehicle. The roller blind also serves as an additional protective layer for upholstery and plastic elements, limiting fading caused by UV radiation.

Design characteristics

As an original Mercedes component, the roller blind is made of materials selected for their resistance to sunlight, temperature changes, and repeated operation cycles. The stable support frame ensures proper tension of the shading surface, which minimizes waving and deformation while driving.

The design solution intended for the rear left side of the vehicle allows for proper guidance of the roller blind within the factory mounting points. As a result, installation is straightforward, without the need to interfere with the door structure or use additional, non-factory brackets.

Condition and service application

The roller blind is a used original part, which in practice means it retains its factory geometry and compatibility with original mounting points. This type of part is perfect both as a replacement for a damaged or worn-out shade and for completing missing interior equipment in vehicles after bodywork and paint repairs.

Replacing the roller blind in the rear door allows for restoring the original functionality of the passenger zone, improving the aesthetics of the door panels, and increasing the comfort of rear-seat passengers without the need for additional films or aftermarket curtains.

Benefits of installing an original roller blind

Using a factory sunshade in the Mercedes W251 brings a number of practical benefits:

• better protection of the interior against heating and UV radiation,
• increased comfort and privacy for rear passengers,
• consistent, aesthetic look in line with the manufacturer's design,
• secure fit to the door structure without modifications,
• possibility to restore equipment completeness after repairs.

This solution is particularly beneficial for users who expect to maintain the original character of the interior and require predictable installation without experimenting with universal accessories.

If you are planning a comprehensive repair or upgrade of the side window and door area in your Mercedes and need other elements from the same group, such as sunshades, additional roller blinds, or protective window curtains, check the available parts in the Mercedes Sunshades and protective blinds category.

To better plan your interior upgrade and combine the replacement of roller blinds with improving seat ergonomics, it is worth reading our guide on the impact of seats on comfort and vehicle value: Interior metamorphosis: how branded seats from dismantling improve comfort and increase car value.