Mercedes W221 Rear Door Lock Latch Mechanism Right O/S Assembly A2217306235

Mercedes W221 Right Rear Door Lock Latch Mechanism A2217306235 is an original part from the Locks and Latches group, designed for the right rear door panel of the W221 body style. This used mechanism ensures a factory fit, maintaining the correct lock operation geometry and compatibility with your Mercedes' door installation.

Specifications and technical data

• SKU: A2217306235
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217306235
• Substitutable numbers: A2217306235, A 221 730 62 35
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Rear Door Lock Purpose and Function

The presented lock mechanism is dedicated for installation in the rear right section of the body, meaning it works with the structure of the rear passenger door on the right side. It is responsible for precise locking and unlocking of the door panel, proper cooperation with the external and internal door handles, and stable door closure while driving.

Thanks to the factory design of the lock, the correct position of strikers, guides, and levers is maintained, which translates to smooth mechanism operation and reduces the risk of play, rattling, or doors not closing properly. This is particularly important in premium vehicles where acoustic comfort and cabin sealing are of great importance.

Construction and Fit for Mercedes W221

The Right Rear Door Lock Mechanism has been designed specifically for the W221 body architecture, taking into account the door shape, linkage routing, and mounting point locations. The original construction ensures:

• compatibility with factory mounting points in the door panel,
• proper routing of control linkages and levers,
• correct cooperation with the factory locking system.

Such a fit minimizes the need for modifications, facilitates installation, and allows for the preservation of the lock's original operating parameters, which is important for both safety and driving comfort.

Condition, Origin, and Benefits of Using a Used Part

The offered lock comes from a Mercedes vehicle and is a used part, meaning it has been previously operated but retains the functionality required for further operation in the door system. Choosing an original used part allows for structural consistency with other body elements while reducing costs compared to purchasing a new lock.

Using a factory mechanism to replace a damaged or worn-out part restores proper door locking, eliminates closure problems, and reduces the risk of the door panel opening unintentionally while driving. This is a practical solution for post-accident repairs, replacement after a failure, or during gradual vehicle restoration.

Practical Installation and Operational Tips

When replacing the lock in the right rear door, it is recommended to:

• check the condition of the linkages, handles, and door seals,
• verify the correct alignment of the door relative to the body,
• check the mechanism's operation after installation – both from the inside and outside.

Careful installation and post-installation operational checks allow for full utilization of the offered mechanism's capabilities and ensure stable, repeatable door locking in daily use.

Repair Extension – Mercedes Locks and Latches

If you are planning a comprehensive repair or modernization of the door area in your Mercedes and need other parts from the same group, such as front door lock mechanisms, trunk latches, or additional latching elements, check the available parts in the Mercedes Locks and Latches category.

For drivers interested in a broader perspective on vehicle steering components, diagnostics, and selecting used parts within the steering system, an article describing the construction and common faults of these assemblies may be helpful – you can find it here: Steering System and Power Steering – How it Works and What Fails?.