Door Molding Trim Mercedes W212 Strip Pad Armrest Rear Left Black A2127301122

The Mercedes W212 Rear Left Door Trim Strip is an original part from the door seals category, designed for the rear left door of the W212 body style. Its precisely fitted geometry and black color allow for an aesthetic and technically correct restoration of the factory door seal on your Mercedes.

Specifications and technical data

• SKU: A2127301122
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2127301122
• Substitutable numbers: A2127301122, A 212 730 11 22, A2127304222, A 212 730 42 22
• Location on the vehicle: Rear, Left
• Color: Black
• Category: Door Seals

Purpose and Function of the Door Trim Strip

The rear left door trim strip is responsible for properly sealing the door edge and providing stable guidance for the door panel. A correctly chosen door seal limits the ingress of moisture, dirt, and noise into the interior, while also maintaining the correct fit of the trim elements.

This part has been specifically designed for the W212 body style, ensuring factory-level assembly tolerances and compatibility with the original mounting points on the rear left door.

Construction, Color, and Fit

The trim strip is made in black, allowing it to harmoniously integrate with most factory interior configurations and seals in this generation of Mercedes. The uniform color facilitates an aesthetic match with other upholstery elements and peripheral seals.

Precise edge profiling and appropriately selected material stiffness contribute to a stable seating of the trim strip on the door panel. This minimizes the risk of creaks, looseness, or deformation during vehicle operation, even with frequent opening and closing of the rear doors.

Benefits of Using an Original Mercedes Trim Strip

Using an original trim strip on the rear left door offers a range of practical benefits:

• Factory Fit – designed for the specific W212 door construction, requiring no modifications.
• Consistent Interior Aesthetics – the black color facilitates maintaining a uniform look for upholstery and seals.
• Stable Door Panel Mounting – a correctly chosen trim strip supports the proper adhesion of the door panel.
• Reduced Unwanted Noise – correct fitment minimizes the risk of squeaks and resonances in the rear cabin area.

As a part from the door seals category dedicated to Mercedes, this trim strip is a functional solution for accident repairs, replacement of worn seals, or completing missing upholstery parts.

Characteristics of a Used Product

The offered trim strip is a used part, sourced from disassembly, which allows for maintaining the original manufacturer's specifications while optimizing repair costs. This type of component is particularly attractive for older W212 models where preserving the factory fit within a reasonable service budget is a priority.

For many users, choosing a used OEM part is a conscious decision – a compromise between original quality and purchase cost, without the need to adapt aftermarket alternatives with uncertain fitment.

Why Choose a Used OEM Part

If you are considering whether a used original trim strip or an aftermarket replacement would be a better choice, a practical guide describing specific selection criteria might be helpful. Check out the article 5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement to more easily assess which solution will be most suitable for your Mercedes.

Other Mercedes Door Seals

If you are assembling a complete set of seals for your car and also need other Mercedes door seals, check out the Mercedes door seals available in our store to select the remaining body sealing system components in one place.