Mercedes-Benz S-Class W221 Door Check Brake Strap Rear Left Right A2217300516

Mercedes W221 Rear Door Actuator Right Left is an original part from the Doors and Door Panels group, designed for the rear of the body in S-Class W221 models. It ensures precise control of the opening and closing mechanism for the rear doors on the right or left side, guaranteeing stable system operation and maintaining factory functionality. This is a solution for users who expect compliance with factory specifications and consistent operation with other vehicle systems.

Specifications and technical data

• SKU: A2217300516
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217300516
• Substitutable numbers: A2217300516, A 221 730 05 16, A2217300016, A 221 730 00 16
• Location on the vehicle: Rear, Right, Left
• Category: Doors & Door Skins

Intended Use and Vehicle Placement

The actuator is designed for installation in the rear of the body, with the possibility of use on both the right and left sides. This placement allows for:

• maintaining proper operation of the door mechanism in the rear cabin area,
• consistent operation with factory locks and guides,
• maintaining the correct door operation geometry relative to the body.

Thanks to its dedicated design for a specific axle and vehicle side, the actuator works with the W221 door structure without the need for mounting modifications or interference with door panels.

Technical Characteristics and Compatibility

The actuator belongs to the group of components responsible for controlling the movement of the door leaf, which is important for both user comfort and proper door closing. The design intended for the W221 platform ensures:

• compatibility with the vehicle's factory door system,
• appropriate mounting points within the door structure,
• proper cooperation with the electrical system and mechanics used in this model.

The part comes from the Mercedes manufacturer line, which translates to alignment with the quality standards used in this vehicle segment and predictable performance in daily use.

Part Condition and Installation Aspects

The actuator is offered in a used condition, allowing for an economical replacement of a damaged component while maintaining the original construction. This type of solution is particularly beneficial for higher-class vehicles, where maintaining the factory door architecture is important for sealing, acoustics, and lock operation.

When correctly selected for the model and body version, installation is based on existing mounting points in the door, without the need for structural modifications to the panel. Installation in a specialized service center is recommended to maintain proper mechanism alignment and avoid stress on the hinges and lock.

Why Choose an Original Mercedes W221 Door Actuator

Using an original actuator in the rear of the vehicle helps maintain the consistent operation of the entire door system. In practice, this means:

• stable opening and closing of the rear right and left doors,
• maintaining factory mechanism operating parameters,
• better integration with other components from the Doors and Door Panels group.

This solution is aimed at users who want to restore full functionality to the rear door area without compromising the original design intended by the vehicle manufacturer.

If you are planning a comprehensive repair or upgrade of the side body area of your Mercedes and need other parts from the same group, such as panels, reinforcements, or door frames, check the available parts in the Mercedes Doors and Door Panels category.

For drivers interested in a broader approach to vehicle servicing and making informed choices about original used components, advisory materials may be useful – you can find more on this topic in the article Whining differential? Find out why a used OEM differential is a better investment than an uncertain aftermarket part, which discusses the advantages of using factory components in key vehicle systems.