Mercedes S204 Boot Lid Tailgate Door Rear Rubber Seal Gasket A2047400378

Mercedes S204 Boot Lid Tailgate Door Rear Rubber Seal Gasket is a precisely fitted body component designed for the rear of the vehicle, responsible for sealing and stable closing of the tailgate. A properly selected seal in this body area limits the ingress of water, dust, and noise into the trunk, improving daily driving comfort. By using an original solution for the Mercedes brand, the correct contact geometry and compatibility with the factory tailgate design are maintained.

Specifications and technical data

• SKU: A2047400378
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047400378
• Substitutable numbers: A2047400378, A 204 740 03 78
• Location on the vehicle: Rear
• Category: Boot & Hatch Lids

Purpose and function of the tailgate seal

The offered seal operates in the rear part of the body, in the tailgate area, where it is responsible for maintaining a tight barrier between the interior and the environment. The correctly selected rubber profile and its flexibility allow for even pressure distribution when closing the tailgate, which reduces vibrations and unwanted noises. Proper sealing in this zone is important both for protecting the transported cargo and for securing sheet metal elements and upholstery against moisture.

Benefits of using an original Mercedes seal

Selecting a seal dedicated to a specific Mercedes body design translates into stable performance over a long period of use. The element has been designed with the following in mind:

• precise fit to the tailgate edge and trunk opening,
• maintaining the appropriate clamping force when the tailgate is closed,
• reducing air drafts and noise in the rear of the vehicle,
• minimizing the risk of water ingress into the luggage compartment.

Such properties are particularly important in vehicles used year-round, where the seal works in varying temperature and humidity conditions. Using an element consistent with factory design assumptions helps maintain the original functional parameters of the body.

Installation and operational characteristics

The tailgate seal mounted in the rear of the vehicle is a component that is subject to natural wear, hardening, and deformation during operation. Replacing it with a properly selected component allows for restoring:

• the correct contact line of the tailgate to the body,
• stable closing without excessive force,
• reduction of the "knocking" phenomenon of the tailgate on uneven surfaces,
• better protection against corrosion around the trunk edge.

The product comes from the Tailgates and rear doors group, which means it was designed to work under specific load and sealing conditions of this body part. As a result, it can be used both for standard maintenance replacement and for body repairs after a collision.

Condition of the item and service application

The offered seal is a used item, which in practice means it comes from vehicle dismantling and can be a cost-effective solution for service repairs. This type of component is often chosen in situations where the priority is to maintain original geometry and compatibility with factory mounts, while reducing costs compared to a new part. A properly selected used seal allows for restoring the functionality of the tailgate without interfering with the body structure.

Expanding the scope of repairs in the rear body area

If you are planning a comprehensive repair or upgrade of the rear body zone in your Mercedes and need other elements from the same group, such as tailgates, hinges, or locks, check the available parts in the Mercedes tailgates and rear doors category.

When planning broader service work, it is also worth paying attention to the economic aspects related to the selection of parts. Practical tips on optimizing the costs of mechanical and body repairs using original components can be found in the article Economical operation of a Ford – where to look for the greatest savings in mechanical and body repairs, the conclusions of which can also be applied to planning service for other brands.