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

The Right Rear Door Lock for Mercedes W177 is an original locking mechanism designed for the rear right side of the body. This component, from the Locks and Latches group, is responsible for securely closing the door, proper locking, and seamless integration with the vehicle's factory opening and closing system, ensuring stable door system operation.

Specifications and technical data

• SKU: A0997303701
• 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

Vehicle Application and Placement

The presented lock is dedicated to the Mercedes W177 class body and is installed in the rear right side area. Its factory-defined placement is the rear right door, which simplifies selecting the correct component when replacing a damaged mechanism.

Precise fitting to the specific body position minimizes the risk of play, leaks, and closing issues, while also ensuring proper interaction with the handle, rods, and control system.

Technical Characteristics of the Lock Mechanism

The right rear door lock mechanism for the Mercedes W177 belongs to the Locks and Latches group, which are components responsible for physically locking and unlocking the door leaf. The construction includes a set of pawls, levers, and rods that transfer motion from the external and internal handles to the actual locking mechanism.

This type of solution is designed for:

• stable integration with the vehicle's factory locking system,
• resistance to multiple opening and closing cycles,
• correct positioning relative to the body pillar and striker,
• maintaining door seal integrity and proper pressure against weatherstripping.

By using an original design, compatibility with the factory door settings is maintained, minimizing the need for additional adjustments after installation.

Condition, Origin, and Benefits of Using a Used Part

The offered door lock is a used part, originating from the original equipment of a Mercedes vehicle. Choosing such a component allows for maintaining consistency with the car's factory specifications while reducing costs compared to a new assembly.

The main benefits of using an original, used lock include:

• maintaining the factory standard of workmanship and fit,
• reliable interaction with the existing door wiring harness and accessories,
• reduced risk of installation problems typical of aftermarket parts,
• the possibility of an economical repair of the right rear locking system.

Selection and Application in the Mercedes W177 Door System

When replacing the lock in the rear right part of the body, it is crucial to match the component to the specific position and generation of the vehicle. This mechanism has been designed precisely for the rear right side of the Mercedes W177, facilitating servicing and reducing installation time.

In practice, this means that after correct mounting, the lock will interact with:

• the factory external and internal door handles,
• the original control rods and levers,
• the existing door locking system in the vehicle.

Such a fit translates to stable operation of the locking mechanism and comfort in the daily use of the vehicle.

Locking System Expansion and Related Components

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and require other components from the same group, such as additional locking mechanisms, locks for other doors, or related locking elements, check the available parts in the Mercedes Locks and Latches category.

For users interested in a broader technical context of this brand's vehicles, including solutions used in four-wheel-drive systems and the interaction of various body and drivetrain components, an article comparing AWD systems may be helpful. You can find it here: xDrive, 4Matic, quattro or 4Motion – comparison of AWD drives from BMW, Mercedes, Audi and VW.