Mercedes W221 Rear Door Check Brake Strap Strut Right O/S A2217300016

Mercedes W221 Rear Door Check Brake Strap Strut Right O/S is an original component of the rear right door opening mechanism, ensuring a controlled range of motion for the door panel. Thanks to the precise design characteristic of the Mercedes brand, the door check stabilizes the door position and reduces the stress acting on the hinges and the bodywork. This practical solution improves the comfort of daily vehicle use and contributes to long-term, predictable door operation.

Specifications and technical data

• SKU: A2217300016
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217300016
• Substitutable numbers: A2217300016, A 221 730 00 16
• Location on the vehicle: Rear, Right
• Category: Lift Supports, Latches, Hinges & Additional Parts

Purpose and function in the vehicle

The door check is designed for installation in the rear right body area, where it is responsible for the smooth guidance of the door during opening and closing. This component:

• controls the maximum door opening angle, protecting the sheet metal and paint from excessive swinging,
• stabilizes the door in several intermediate positions, which facilitates passenger entry and exit,
• limits sudden, uncontrolled movements of the door panel during wind gusts or on inclined surfaces.

As a result, the door mechanism in the Mercedes W221 operates in a predictable manner, and the user has better control over the door movement under daily operating conditions.

Design and component group

The door check belongs to the Gas springs, locks, hinges and other parts group, which are components responsible for the mechanical guidance, locking, and support of moving body parts. In practice, this means it works in conjunction with the hinges and the door lock, creating a cohesive system responsible for:

• correct door alignment relative to the body,
• even distribution of forces during opening and closing,
• reduction of stress acting on the mounts in the long term.

The original origin from the Mercedes brand helps maintain factory performance parameters and compatibility with the door construction in the W221 model.

Characteristics of the used component

The offered door check comes from the secondary market, which allows for an economical replacement while maintaining the manufacturer's original specifications. A used component of this type is particularly attractive in situations where:

• the existing door check has worn out, causing the door to operate too loosely or unevenly,
• mechanical damage has occurred as a result of excessive opening or a collision,
• a quick, budget-friendly repair is necessary while maintaining compliance with the factory solution.

Choosing an original, used component allows you to maintain the structural integrity of the vehicle and avoid fitment issues typical of aftermarket parts of uncertain origin.

Benefits of using an original door check

Using the correct door check in a Mercedes W221 translates into a number of practical operational benefits:

• Better ergonomics – the door opens in a predictable way, stopping in convenient intermediate positions.
• Protection of hinges and bodywork – the controlled range of motion reduces the risk of deformation and cracks in the mounting area.
• Consistency with factory design – the original element from the same assembly group works with the lock and hinges according to the manufacturer's specifications.

For users who value maintaining the factory character of the vehicle, this is a technically safe and predictable solution in the long run.

Door system expansion and related parts

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as guides, locks, or hinges, check out the available parts in the Gas springs, locks, hinges and other parts Mercedes category.

To better plan your service and reduce vehicle downtime in the workshop, it is worth learning how a wide selection of body elements and door mechanisms in one place affects repair time – you can find more on this topic in the article No more weeks of waiting – how a wide assortment in one warehouse really shortens your car's downtime at the mechanic's?.