Door Lock Mercedes C205 C238 Front Door Left N/S Lock Mechanism A0997203400

Left Front Door Lock for Mercedes C205 / C238 is an original locking mechanism designed for driver's side installation in coupe and convertible body styles. This component belongs to the Locks and Latches group, ensuring precise closing and secure locking of doors in modern Mercedes C-Class and E-Class models.

Specifications and technical data

• SKU: rhd-A0997203400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997208501
• Substitutable numbers: A0997203400, A 099 720 34 00, A 099 720 85 01, A0997208501
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Vehicle Application and Placement

The presented lock mechanism is designed for installation in the front left door, i.e., on the driver's side. Its placement in a critical body point means it is responsible for both everyday usability comfort and safety during driving and while parked.

The precise construction of the lock works in conjunction with the factory handle, rods, and locking mechanism, maintaining the correct door operation geometry and proper closing without the need for additional modifications.

Lock Mechanism Construction and Function

The left front door lock mechanism in the Mercedes C205 / C238 is responsible for several key operational functions:

• mechanical locking and unlocking of the driver's side door,
• stable holding of the door in the closed position while driving,
• operation with the factory interior and exterior opening system,
• correct transfer of motion from the handle and rods to the locking assembly.

Thanks to its specific body position fit, the lock ensures repeatable door wing operation, reduces play, and minimizes the risk of incomplete closing, which translates to user comfort and cabin sealing.

Benefits of Using an Original Mercedes Lock

Choosing an original left front door lock for the Mercedes C205 / C238 primarily means guaranteed fit with the factory system. The component has been specifically designed for the door geometry of these body styles, facilitating installation and reducing the need for adjustments.

Key advantages include:

• maintaining the factory operating characteristics of the handle and locking mechanism,
• consistency with the door construction and other closing system components,
• usability as a replacement for the factory lock in case of wear or damage,
• a solution compliant with the vehicle manufacturer's design, without altering the door structure.

This makes the lock suitable for both standard replacement of worn parts and post-accident repairs where restoring original door functionality is crucial.

Condition, Verification, and Service Application

The offered mechanism is from the used parts group, allowing for economical repair while maintaining original manufacturing quality. This type of component is particularly useful in professional body and mechanical repair shops and workshops specializing in the Mercedes brand, where compliance with factory solutions is important.

Before installation, a standard check of the mechanism's correct operation and proper door adjustment after installation are recommended to ensure smooth closing and opening, and even contact of the door wing with the body.

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

Additional Information and Parts Selection

When selecting a left front door lock for a specific C205 or C238 model, it is advisable to pay attention to compatibility with the vehicle's equipment and year of manufacture. Using the OEM number and interchangeable numbers is helpful for precise component matching to a given car.

If you wish to deepen your knowledge on the safe use of used components in electronic and control systems, practical principles of selection by numbers, and compatibility, consult the advice provided in the article Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.