Mercedes W205 Door Lock Latch Mechanism Actuator Rear Right O/S A2220064099

Mercedes W205 Door Lock Latch Mechanism Actuator Rear Right O/S is an original component from the Locks and Latches category, designed for the rear right door of the W205 body style. Its precise construction ensures proper integration with the factory electrical system and door mechanics, resulting in stable closing, correct locking, and seamless central locking operation.

Specifications and technical data

• SKU: A0997304200-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997304200
• Substitutable numbers: A0997304200, A 099 730 42 00, A2220064099, A 222 006 40 99
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Purpose and function of the rear right door lock

The presented lock is dedicated for installation in the rear passenger-side area. It is responsible for:

• mechanically locking and unlocking the door,
• working with the central locking system and remote control operation,
• maintaining the correct door position relative to the body when closed.

Thanks to its precise fit for the specific vehicle location, the lock maintains factory operating geometry, which reduces the risk of slamming doors, looseness, or incomplete closing. This is particularly important in premium vehicles, where both acoustic comfort and the durability of wear-and-tear components are essential.

Original origin and compatibility

As a Mercedes brand product, the lock has been designed for strict compatibility with factory wiring harnesses, control units, and door mechanics in the W205 model. This means:

• retaining original mounting points in the door panel,
• compatible electrical connectors with no need for installation modifications,
• proper cooperation with safety and comfort systems.

Choosing an original lock reduces the risk of comfort system errors, closing issues, or improper central locking operation, which are common when using aftermarket replacements of uncertain origin.

Characteristics of the used component

The offered lock comes from the used original parts segment. Such components are frequently chosen for maintenance repairs because they:

• maintain the vehicle manufacturer's factory specifications,
• allow for maintaining consistency of the locking system throughout the entire car,
• provide a cost-effective way to restore full door functionality.

Before installation, it is recommended to perform a standard check of the mechanism and the correct operation of cables and handles to ensure the entire door system operates smoothly and without jamming.

Installation and service aspects

The lock designed for the rear right side of the W205 body allows technicians to efficiently replace a damaged component without interfering with the door structure. In practice, this means:

• the ability to use factory mounting holes,
• no need for door panel adaptation or mounting modifications,
• easier diagnostics of potential future faults.

When replacing, it is worth paying attention to the correct routing of cables and proper seating of the lock relative to the striker on the pillar, which affects the door's operating quality and body sealing.

If you are planning a comprehensive repair or upgrade of the door lock area in your Mercedes and need other elements from the same group, such as locking mechanisms, cylinders, or central locking actuators, check the available parts in the Mercedes Locks and Latches category.

For drivers interested in a broader approach to safety and road visibility, a practical guide on choosing lighting may be helpful – you can find it in the article See more and better – a complete guide to selecting and replacing used LED and Xenon headlights, which discusses the importance of using original components in key vehicle systems.