Mercedes X164 Tailgate Seal Rubber Strip A1647401378

Mercedes X164 Tailgate Seal Rubber Strip is a precisely fitted component from the Tailgates and rear parts group, designed to ensure the tightness and protection of the cargo area. Using this seal allows for an economical yet technically correct repair of the trunk area in Mercedes vehicles, reducing the risk of water, dust, and noise entering the vehicle interior.

Specifications and technical data

• SKU: A1647401378
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1647401378
• Substitutable numbers: A1647401378, A 164 740 13 78
• Category: Boot & Hatch Lids

Purpose and function of the tailgate seal

The tailgate seal in the X164 body type is responsible for a tight connection between the tailgate and the body, stabilizing the contact line and improving vehicle operating comfort. A properly selected component limits air drafts, reduces noise coming from the rear of the body, and helps keep the luggage compartment dry and clean.

Using an original seal from the Tailgates and rear parts group is particularly important in vehicles used daily, where frequent opening and closing of the tailgate generates mechanical stress and requires a stable, factory-fit to the body profile.

Benefits of using an original Mercedes seal

Choosing a component intended for the Mercedes X164 ensures:

• Factory fit to the tailgate geometry – the seal works with the original mounting points and the edge profile of the trunk.
• Stable performance within the vehicle's typical operating temperature ranges.
• Reduced risk of leaks in the rear body area after bodywork and paint repairs or tailgate replacement.
• The ability to restore proper operation of the lock and hinges thanks to the correct pressure of the tailgate against the body.

For the user, this means more predictable vehicle behavior in the rain, during pressure washing, and while driving at higher speeds, when pressure differences place particular stress on the sealing area.

Characteristics of the used component

A used tailgate seal is a cost-effective solution that allows for maintaining the manufacturer's original specifications at a lower financial outlay. This type of component is often chosen for post-accident repairs, replacing corroded trunk edges, or when removing the effects of leaks if the existing seal is deformed or excessively worn.

In practice, installing a used seal involves removing the old component, cleaning the contact surface, and seating the new seal in the factory channel or on the guide points provided by the manufacturer. Thanks to the preservation of the original geometry, it is possible to achieve repeatable tailgate pressure without the need for additional modifications.

Application in the body system and installation

The tailgate seal in the Mercedes X164 works with the hinges, lock, and tailgate skin, creating a cohesive rear body system. A properly selected component:

• stabilizes the contact line of the tailgate to the body,
• limits moisture penetration into the trunk interior,
• supports the maintenance of proper passenger cabin acoustics.

During installation, it is worth paying attention to the even placement of the seal around the entire perimeter and the absence of twists or kinks that could cause local leaks. Proper seating of the component translates into longer and more stable vehicle operation.

Expanding rear body modernization

If you are planning a comprehensive repair or modernization of the rear body area in your Mercedes and need other components from the same group, such as the tailgate, hinges, or trunk lock, check the available parts in the Mercedes Tailgates and rear parts category.

Practical operating tips

To extend the life of the tailgate seal, it is worth periodically removing sand and dirt from its surface and checking the fit after automatic car washes or service work in the rear of the body. Regular inspection of this area allows for faster detection of the first signs of leaks, such as moisture in the trunk or traces of dirt on the interior linings.

For drivers interested in a broader approach to maintaining the car in good condition, including the optimal operation of systems exposed to weather conditions, a guide on operation in high temperatures may be helpful – more information can be found in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.