Mercedes-Benz Vito W639 Boot Lid Tailgate Gas Pressurized Spring A6399800164

Mercedes-Benz Vito W639 Boot Lid Tailgate Gas Pressurized Spring is an original tailgate lifting component designed for the Mercedes Vito W639 generation. It maintains a stable position of the tailgate, ensuring convenient access to the cargo area and safe vehicle operation. Thanks to its factory origin from the Boot lids and tailgates group, it maintains the correct operating parameters and fitment to the bodywork.

Specifications and technical data

• SKU: A6399800164
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6399800164
• Substitutable numbers: A6399800164, A 639 980 01 64
• Category: Boot & Hatch Lids

Purpose and function of the gas spring

The tailgate gas spring in the Mercedes Vito W639 is responsible for controlled opening and supporting the tailgate in the upper position. A properly selected component:

• stabilizes the movement of the tailgate during opening and closing,
• reduces the load on hinges and the tailgate skin,
• increases the comfort of daily use of the commercial vehicle,
• minimizes the risk of the tailgate falling unexpectedly.

Thanks to a design tailored to the specific Vito generation, the gas spring works in harmony with the hinge geometry and the weight of the tailgate, which translates into predictable, repeatable operation under typical usage conditions.

Construction and fitment for Mercedes Vito W639

The offered gas spring belongs to the Boot lids and tailgates group, which means it has been designed for operation in the rear part of the body, in the immediate vicinity of the cargo area. The telescopic construction ensures linear movement and a properly selected force characteristic, and the mounting points are prepared for the factory brackets in the body and tailgate of the Vito W639.

The original origin from the Mercedes brand promotes maintaining proper fitment with the bodywork, which facilitates installation and reduces the need for additional modifications. In practice, this translates into shorter service time and a lower risk of leaks or stresses within the tailgate area.

Benefits of using an original gas spring

Using a dedicated tailgate gas spring in the Mercedes Vito W639 allows you to maintain the vehicle's factory performance characteristics. Key advantages include:

• secure support of the tailgate in the open position, essential during intensive loading and unloading,
• repeatable operating characteristics, consistent with the vehicle manufacturer's specifications,
• compatibility with existing mounting points in the body and tailgate,
• reduction of mechanical loads acting on the hinges and skin.

For commercial vehicles such as the Vito, a properly functioning tailgate gas spring has a direct impact on work ergonomics and the safety of people using the cargo area.

Component condition and service application

The offered gas spring comes from the secondary market, which makes it a cost-effective solution while maintaining the manufacturer's original specifications. This type of component is particularly useful in situations where the factory gas spring has lost its efficiency, the tailgate falls, or requires excessive force to lift.

Replacing the gas spring is a typical service operation within the rear part of the body and can be carried out as a single repair or as part of a broader maintenance of the luggage area, including hinges, locks, or tailgate seals.

Related components and technical knowledge

If you are planning a comprehensive repair or upgrade of the rear body area in your Mercedes and need other components from the same group, such as tailgate hinges, locks, or additional gas springs, check the available parts in the Mercedes boot lids and tailgates category.

For users interested in a broader technical context of vehicles of this brand, including all-wheel drive solutions, an article describing the construction and servicing of AWD systems may be useful – you can find a detailed discussion in the material xDrive, 4Matic, quattro or 4Motion – a comparison of AWD drives from BMW, Mercedes, Audi and VW.