Door Lock Mercedes W204 W212 Rear Right O/S Mechanism Actuator A0997300635

Door Lock Mercedes W204 W212 Rear Right O/S Mechanism Actuator is a factory-original component from the Locks and Latches category, designed for the rear right side of the vehicle body. It ensures proper locking, unlocking, and seamless operation with the factory door handle mechanism and linkages, resulting in safe and predictable door performance during daily use. This is the ideal solution for users who want to restore full door functionality in their Mercedes without compromising on fitment.

Specifications and technical data

• SKU: A0997300635-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997300635
• Substitutable numbers: A0997300635, A 099 730 06 35
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Purpose and function of the rear right door lock

The offered lock is designed for installation in the rear right section of the body, which guarantees proper positioning relative to the door panel, pillar, and seals. The component is responsible for:

• mechanical locking and unlocking of the door leaf,
• cooperation with the exterior and interior door handles,
• stable door closure while driving,
• proper guidance of the lock tongue relative to the striker in the bodywork.

Thanks to a design compliant with Mercedes factory standards, the lock maintains the correct operating geometry, which minimizes the risk of door slamming, improper closing, or hinge play resulting from incorrect locking.

Benefits of using an original Mercedes lock

Choosing a rear right door lock sourced from a dismantled vehicle of the same brand allows you to maintain the structural integrity of the entire door system. Key advantages include:

• Factory fitment – maintained compatibility with the original door panel, guides, and pillar striker.
• Stable mechanism operation – proper locking reduces vibration transfer to the interior and decreases noise while driving.
• Seamless integration with existing opening and closing system components, with no need for mounting modifications.

This solution is particularly beneficial for post-accident repairs or after intensive use, when the existing lock shows signs of wear, such as jamming, lack of secure closure, or problems with opening from the inside.

Characteristics of the used component

The presented lock belongs to the group of used parts, which allows for a significant reduction in repair costs while maintaining the factory design. Such components are frequently chosen by workshops and individual users because they:

• allow for high quality to be maintained at reasonable financial outlays,
• preserve the manufacturer's original technical solutions,
• are a good choice for comprehensive door repairs after a collision or due to corrosion.

In the case of components such as Locks and Latches, it is particularly important that the mechanism comes from the same design family, which ensures predictable behavior during daily vehicle use.

Practical installation and maintenance tips

The rear right door lock is designed for installation in factory mounting points, which facilitates the mechanic's work and shortens repair time. When replacing, it is worth paying attention to:

• the condition of the linkages and cables leading to the handles,
• the correct adjustment of the pillar striker relative to the lock tongue,
• the condition of the door seals, which affect the pressure and interior acoustics.

After installation, it is recommended to check the door operation from the inside and outside several times to ensure that the locking process is smooth and the door closes without excessive force. This will restore comfort and the proper level of safety for passengers in the back seat.

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 locking mechanisms, cylinders, or additional security features, check the available parts in the Mercedes Locks and Latches category.

If you are simultaneously diagnosing disturbing noises from the chassis and want to optimize service costs, it is worth checking out practical tips on selecting used suspension components in the article Knocking in the suspension? Discover a clever way to restore factory handling precision without spending a fortune at the service center.