Mercedes CLA C117 Door Lock Latch Mechanism Rear Right O/S A2040085999

Mercedes CLA C117 Door Lock Latch Mechanism Rear Right O/S is an original component from the Locks and Latches category, designed for installation in the rear right section of the vehicle body. Its precise construction ensures proper cooperation with the door handle mechanism, linkages, and central locking control system, resulting in stable and secure door operation.

Specifications and technical data

• SKU: A2040085999
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2040085999
• Substitutable numbers: A2040085999, A 204 008 59 99, A0997305900, A 099 730 59 00
• Location on the vehicle: Rear, Right
• Part type: Door Lock
• Category: Exterior Locks & Lock Hardware

Purpose and technical function

The presented lock is dedicated to installation in the rear right part of the body, where it is responsible for the mechanical locking and unlocking of the door. The component works with the external and internal handle system, as well as the control installation, ensuring proper closing, opening, and maintaining the door in a closed position while driving. Thanks to the factory design intended for Mercedes vehicles, the lock maintains the correct mounting geometry and appropriate mechanism travel, which facilitates installation and reduces the need for additional adjustments after fitting.

Original origin and replacement numbers

The component has an original OEM part number and assigned replacement numbers, which facilitates clear identification in the manufacturer's catalogs and parts selection systems. This allows for precise matching of the lock to the specific body configuration and equipment, without the risk of using an incorrect variant. These markings are particularly useful when verifying compatibility with the vehicle's factory equipment, as well as when comparing with other references used within the same model platform.

Condition, construction, and benefits of installation

The lock is offered in a used condition, which allows for an economical replacement of a damaged component while maintaining the original manufacturer's specifications. The construction based on factory components ensures proper cooperation with existing guides, hinges, and door seals, which is important for the tightness and acoustic comfort of the cabin. The main advantages of installing this lock include:

• maintaining the factory operating characteristics of the locking mechanism,
• compatibility with the existing control system in the vehicle,
• proper fit for the rear right part of the body without interfering with the door structure,
• the ability to restore proper door closing and locking after a collision or wear of the previous component.

Application in service and parts selection

The Mercedes CLA C117 Door Lock Latch Mechanism Rear Right O/S will prove useful both in professional service centers and independent workshops, where quick installation and certainty of fit are important. Markings such as SKU, OEM part number, replacement numbers, brand, and vehicle placement are clearly defined in the specification, which facilitates verification of compatibility with the vehicle. In case of doubts during selection, it may be helpful to use the VIN number and compare catalog data to avoid installing the wrong variant of the lock in the rear right zone of the body.

Repair expansion and selection of related components

If you are planning a comprehensive repair or upgrade of the door lock zone in your Mercedes and need other components from the same group, such as locking mechanisms, cylinders, or central locking actuators, check the available parts in the Mercedes Locks and Latches category. If you want to further optimize the component selection process and avoid mistakes when ordering, it is worth using practical tips on using the VIN number – you will find them in the article How to choose original used parts for BMW, Audi, and Mercedes by VIN number?, which discusses step-by-step how to verify the compatibility of parts with a specific car model.