Mercedes W221 Rear Door Lock Mechanism Right O/S Side A2217300435

Mercedes W221 Rear Right Door Lock Actuator A2217300435 is an original part from the Internal Locks and Latches group, designed for the rear right side of the body. This factory mechanism ensures proper locking, unlocking, and integration with the vehicle's electrical system, contributing to the safe and predictable operation of your Mercedes' doors.

Specifications and technical data

• SKU: A2217300435
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217300435
• Substitutable numbers: A2217300435, A 221 730 04 35
• Location on the vehicle: Rear, Right
• Category: Interior Locks & Lock Hardware

Purpose and Function of the Lock Actuator

The presented actuator is dedicated for installation in the rear right part of the body, where it is responsible for precise door leaf locking, interaction with the interior and exterior door handles, and the central locking system. The design intended by the vehicle manufacturer guarantees proper linkage guidance, adequate closing force, and stable holding of the door in the closed position while driving.

By maintaining the factory geometry and mounting points, the actuator works in harmony with the original door structure, reducing the risk of play, rattling, or closing issues. This is particularly important for higher-class models where acoustic comfort and the operational refinement of body elements are of great significance.

Construction and Fit for Mercedes W221

The lock actuator has been specifically designed for the door architecture of the Mercedes S-Class W221 generation. It includes the latch assembly, gears, and components interacting with the linkages and control system, enabling proper operation from both the handles and the central locking system. The use of the original design allows for maintaining the correct position of all levers and catches relative to the door panel and the body pillar.

This precise fit translates to:

• correct engagement of the latch with the striker on the body,
• stable operation of the mechanism during repeated opening and closing,
• consistency with factory settings for door gaps and sealing.

Benefits of Using the Original Rear Right Lock Actuator

Using the original lock actuator in a Mercedes W221 helps maintain the integrity of the safety and comfort system. This component works with the vehicle's factory systems, promoting the full functionality of the central locking system and predictable door response to signals from the remote or interior buttons. This solution is particularly beneficial when you want to preserve the character and quality of craftsmanship typical for this class of vehicle.

By choosing this actuator, you gain:

• factory fit for the rear right door structure,
• compatibility with the existing wiring and hardware,
• the ability to restore proper locking after a failure or wear of the previous component.

Condition and Service Application

The offered actuator comes from a Mercedes vehicle and is intended as a replacement part for repairing or replacing a damaged rear right door lock. It is a practical service solution that allows for restoring full door functionality without the need for structural or wiring modifications. Using an original part helps maintain the technical consistency of the entire locking system.

Expanding the Lock System in a Mercedes

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and require other parts from the same group, such as additional locking mechanisms, interior lock modules, or related control elements, check the available parts in the Mercedes Internal Locks and Latches category.