Mercedes W177 Door Lock Rear Right O/S Lock Mechanism Linkage A0997303701

Mercedes W177 Rear Right Door Lock is an original part from the Locks and Latches group, designed for the rear right side of the body. It ensures precise cooperation with the factory door mechanism, guaranteeing correct locking, unlocking, and interaction with the vehicle's electrical system. This is a solution for users who expect a robust, proven part structurally matched to Mercedes W177 class models.

Specifications and technical data

• SKU: A0997303701-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0997303701
• Substitutable numbers: A0997303701, A 099 730 37 01
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Door Lock Purpose and Function

The presented lock is dedicated for installation in the rear right part of the body, meaning full integration with the door's geometry and factory mounting points. It is responsible for the stable closing of the door leaf, correct locking while driving, and cooperation with the interior and exterior opening systems. Thanks to a design consistent with the manufacturer's solutions, the lock maintains the proper operation of the handle mechanism, rods, and any central locking actuators.

Benefits of Using an Original Mercedes Lock

Using a part from the Mercedes offering allows for maintaining the structural integrity of the door and avoiding problems typical of aftermarket alternatives, such as imprecise fit or unstable mechanism operation. The lock has been designed for a specific body platform, which translates to:

• correct positioning relative to the pillar and striker,
• appropriate door closing force,
• compatibility with factory rods and handles,
• seamless cooperation with the vehicle's safety system.

For the user, this means stable operation of the locking mechanism and reduced risk of leaks or improper door closing on the rear right side.

Installation and Operational Characteristics

Its placement on the vehicle in the rear right part of the body facilitates the selection of the correct component for accident repairs or routine maintenance. The lock is prepared to work within the existing door system, which promotes efficient installation in workshop conditions. The design intended by the vehicle manufacturer allows for maintaining factory assembly tolerances and proper closing geometry, which is important for both user comfort and reducing noise and vibrations during driving.

The product comes from the Locks and Latches segment, making it a logical choice for comprehensive servicing of door mechanisms in the given model. In case of replacing a damaged or worn part, using this lock allows for restoring the original functionality of the door without the need for body structure modifications.

Product Condition and Practical Application

The offered lock is a used part, which in workshop practice often represents a favorable compromise between repair cost and maintaining the original manufacturer's specifications. This type of part is particularly suitable for repairing intensively used vehicles, where restoring the correct operation of the door mechanism while maintaining a reasonable service budget is crucial. Using an original used lock allows for maintaining the proper operating parameters of the locking system and avoiding compatibility issues.

Expanding Service for the Rear Right Door Area

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

For users interested in a broader perspective on operating diesel-powered cars and the costs of parts from the secondary market, an article comparing popular BMW engine units might be helpful – you can find it here: BMW N47 vs M57 / M57N / M57N2 – Ranking of Legendary Diesels.