Mercedes-Benz C W203 Rear Door Seal Frame Gasket Left Right Grey A2036972451

Mercedes-Benz C W203 Rear Door Seal Frame Gasket Left Right Grey is a precisely fitted body component from the Doors and door panels group, designed for the rear side area of the vehicle. The grey gasket ensures a tight seal for the door, reducing noise, preventing moisture ingress, and improving acoustic comfort inside the car. This original used part is a sensible choice for technical repairs or replacing a worn-out gasket in Mercedes C-Class W203 models.

Specifications and technical data

• SKU: A2036972451
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2036972451
• Substitutable numbers: A2036972451, A 203 697 24 51
• Location on the vehicle: Rear, Right, Left
• Color: Grey
• Category: Doors & Door Skins

Purpose and vehicle placement

The presented gasket is designed for installation in the rear part of the body, on the left side door, with the possibility of use in configurations intended for the rear axle of the vehicle. Its placement in the rear door area means the component is responsible for:

• sealing the contact between the door and the body in the rear zone,
• reducing the ingress of water and contaminants,
• limiting wind noise while driving,
• stable guidance of the door edge relative to the body frame.

Such a fit is particularly important in premium class cars, where high body performance and consistent sealing after every door closure are expected.

Material characteristics and color

The door gasket is made of flexible material designed to operate in varying weather conditions, which helps maintain proper elasticity across a wide temperature range. The grey color allows for aesthetic matching with many interior configurations and body paint colors used in the Mercedes W203, especially in variants with light or neutral finishes. The uniform color also facilitates visual inspection of the gasket's condition and any potential mechanical damage.

Benefits of using an original door gasket

Using a dedicated gasket in the rear body section provides a number of practical operational benefits:

• Stable door perimeter seal – reduction of drafts, moisture, and dust in the cabin.
• Better acoustic insulation – reduction of wind noise and suspension sounds in the rear of the vehicle.
• Protection of door panel edges – reducing the risk of corrosion at contact points with the body frame.
• Compatibility with factory door geometry – no need for modifications or fitting universal profiles.

As a result, the rear left door gasket is a functional solution for body repairs, replacing worn components, or restoring driving comfort in daily-driven cars.

Application in the door and door panel system

The element belongs to the Doors and door panels group, working in conjunction with the door skin, body frame, and hardware. A correctly installed gasket:

• ensures even pressure around the entire door perimeter,
• supports the operation of the lock and hinges by cushioning the closing action,
• limits door edge vibrations when driving over uneven surfaces.

This is particularly important in vehicles where maintaining the factory feel of the door operation is desired – without rattles, looseness, or leaks in the rear passenger cabin.

Selection and additional technical information

The offered gasket is a used item, which allows for economical repair while maintaining the original geometry and profile used by the manufacturer. Before installation, it is worth verifying compatibility with the specific W203 body version and comparing the shape and path of the gasket with the currently installed element. If necessary, checking the markings in the product's technical specification will also be helpful.

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

To better understand the impact of body components and seals on acoustic comfort and exhaust system performance in cars of various brands, it is worth checking out the practical tips contained in the article Performance exhaust system: used manifolds and sports catalytic converters on the road, which discusses issues related to the operation and selection of used components.