Mercedes X156 Tailgate Boot Lid Seal Body A1567400178

The Mercedes X156 Rear Trunk Lid Seal is an original body part from the Door Seals group, designed for precise sealing of the rear trunk lid in Mercedes vehicles. Its carefully designed profile ensures a tight seal of the lid, limiting the ingress of water, dust, and noise into the luggage compartment, which translates to a more comfortable and organized vehicle operation.

Specifications and technical data

• SKU: A1567400178
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1567400178
• Substitutable numbers: A1567400178, A 156 740 01 78
• Category: Door Seals

Purpose and Function of the Trunk Lid Seal

The rear trunk lid seal in the X156 body type is responsible for creating a watertight connection between the lid and the body frame. A correctly chosen component:

• limits water ingress into the trunk,
• reduces the risk of corrosion around the lid edges and loading sill,
• decreases the level of noise and vibrations transmitted from the outside,
• stabilizes the lid's position when closed, improving the smooth operation of the lock.

A properly selected seal is particularly important in vehicles operated in variable weather conditions, where frequent precipitation, road salt, and temperature fluctuations can accelerate the wear of rubber components.

Original Origin and Fit for Mercedes X156

The presented seal comes from the line of parts intended for the Mercedes brand, which means maintaining factory geometry and compatibility with the X156 body. Thanks to this:

• the seal's profile is matched to the shape of the trunk lid frame,
• installation occurs at original mounting points,
• there is no need for modifications or forcing the part to fit.

This solution allows for maintaining the structural integrity of the body and preserving sealing parameters close to factory specifications, which is important both for comfort and for protecting electrical components located in the luggage compartment.

Performance Characteristics and Installation

The seal is a wear-and-tear component that can degrade over time, becoming hardened or developing localized cracks. Replacing it with a functional component restores proper lid fit and reduces common issues such as condensation on the inside of the trunk lid or unpleasant odors resulting from dampness in the carpeting.

In practice, installation involves removing the old seal from the body edge and fitting the new component into the factory groove or onto the prepared edge. With basic installation principles followed, no specialized tools are required, and the entire operation can be performed as part of standard bodywork maintenance.

Product Condition and Benefits of Choosing a Used Part

The offered seal is a used part, allowing for an economical repair while maintaining the original origin of the component. For many Mercedes vehicle owners, this is a sensible compromise between cost and quality, especially for body parts that do not directly affect the operation of mechanical or electronic systems.

Choosing an original, used seal can also be advantageous in terms of fit – the part comes from an actual vehicle, so its geometry and material hardness have been verified through practical use.

Expanding Service Scope

If you are planning a comprehensive repair or upgrade of the body opening area in your Mercedes and need other parts from the same group, such as additional seals, weatherstripping, or sound deadening elements, check the available parts in the Mercedes Door Seals category.

For drivers who are simultaneously considering servicing or replacing powertrain components, an article describing common problems and criteria for selecting transmissions may be a useful supplement to your knowledge – find more information in the material Gearbox: Manual, Automatic, or DSG – Common Faults and a Used Gearbox Buying Guide.