Mercedes B-Class W245 Trunk Lid Sealing Seal Gasket Rear Panel Door A1697401378

Mercedes B-Class W245 Trunk Lid Sealing Seal Gasket Rear Panel Door is a precisely profiled body component designed for the rear of the vehicle, responsible for tightly closing the trunk lid. A properly selected seal limits the ingress of water, dust, and noise into the interior, improving user comfort and the durability of trunk components. Choosing an original seal from the Trunk lids and rear panels group allows you to maintain factory fitment and stable mounting.

Specifications and technical data

• SKU: A1697401378
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1697401378
• Substitutable numbers: A1697401378, A 169 740 13 78, AS
• Location on the vehicle: Rear
• Category: Boot & Hatch Lids

Purpose and function of the trunk lid seal

The trunk lid seal in the Mercedes B-Class W245 model operates in the rear body zone, in direct contact with the edge of the lid. Its task is to:

• limit the ingress of rainwater and moisture into the luggage compartment,
• reduce noise and vibrations transmitted from the outside into the vehicle interior,
• stabilize the closing of the lid through proper pressure around the entire perimeter,
• protect the sheet metal edges against accelerated corrosion resulting from stagnant water and dirt.

A well-selected rear seal supports the proper operation of the lock, actuators, and other components from the Trunk lids and rear panels group, which translates into predictable closing and opening of the lid.

Benefits of using an original Mercedes seal

The component designed for a specific body model ensures proper routing along the perimeter of the trunk opening and appropriate material elasticity. In practice, this means:

• secure adhesion to the lid and body without the need for additional modifications,
• maintenance of factory assembly clearances, which reduces squeaking and rattling while driving,
• better protection of the trunk upholstery and electrical installation against dampness,
• maintaining the aesthetic appearance of the rear of the vehicle thanks to the even run of the seal.

For the user, this means more stable operating conditions in the rear part of the body and a lower risk of costly repairs resulting from the long-term presence of moisture.

Assembly characteristics and application in the rear of the vehicle

The trunk lid seal is intended for installation in the rear body zone, in the factory seating location. The design adapted to the Mercedes B-Class W245 enables:

• installation in existing guides and slots without interfering with the sheet metal,
• restoration of the original contact line of the lid to the body,
• maintenance of compatibility with factory hinges, lock, and lid actuators.

Such a solution facilitates service and allows for restoring the proper tightness of the rear part of the vehicle after replacing a worn or damaged seal.

Condition of the component and practical application

The offered seal comes from an operated vehicle, which in practice means that it is a used part that retains the functionality appropriate for this type of component. For many users, this is a reasonable compromise between cost and effectively restoring the tightness of the rear lid. Replacing a worn seal with a functional component of this type allows for reducing window fogging from the trunk side and improving the overall acoustic comfort of the cabin.

Expansion of rear body zone modernization

If you are planning a comprehensive repair or modernization of the rear body zone in your Mercedes and need other components from the same group, such as lids, hinges, or locks, check the available parts in the Mercedes Trunk lids and rear panels category.

Technical support and repair cost optimization

When planning broader service work, it is worth considering the impact of rear body tightness on the durability of the electrical installation, upholstery, and bodywork elements. Selecting appropriate, used components often allows for significantly reducing repair costs while maintaining proper functionality. If you are interested in a broader context of using used parts in vehicle service and optimizing expenses, an article discussing the evolution of powertrains and the impact of part selection on operating costs may be helpful – you can find it here: Volkswagen 1.9 TDI vs 1.4 TSI – evolution of VW engines and repair costs.