Mercedes W221 Door Lock Latch Mechanism Actuator Front Right O/S A2217208035

Mercedes W221 Front Right Door Lock is an original locking mechanism with a built-in actuator, designed for installation in the driver's or front passenger's right-side door of the W221 S-Class model. This component belongs to the locks and latches group, ensuring precise locking and seamless integration with the vehicle's factory central locking system and electronics, serving as a functional service solution.

Specifications and technical data

• SKU: rhd-A2217208035
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2217208035
• Substitutable numbers: A2217208035, A 221 720 80 35, KD
• Location on the vehicle: Front, Right
• Category: Exterior Locks & Lock Hardware

Vehicle Application and Placement

The presented lock is specifically designed for the front right door of the Mercedes S-Class W221 generation. It is responsible for:

• mechanically securing the door leaf to the body pillar,
• transmitting motion from the exterior and interior door handles to the latch mechanism,
• interfacing with the central locking actuator and the vehicle's electrical system.

Thanks to its dedicated placement in the front-right zone, the lock maintains the correct linkage geometry and manufacturer-specified mounting points.

Construction of the Mercedes W221 Door Lock Mechanism

The mechanism combines the mechanical part and the actuator components of the central locking system within a single housing. The construction includes, among other things:

• the lock body with a set of pawls and a bolt that engage with the striker on the pillar,
• internal levers and cams that transfer movement from the handles and linkages,
• an integrated actuator responsible for automatic opening and closing,
• mounting points that match the factory mounting holes in the W221 doors.

This configuration allows for the preservation of the door's factory operating characteristics, proper closing, and correct interaction with comfort systems.

Benefits of Using an Original Door Lock and Latch

Using an original door lock in a Mercedes W221 offers a number of practical benefits:

• Full Body Compatibility – proper fit with the door panel, pillar, and factory linkages.
• Correct Central Locking Integration – maintains the manufacturer-specified locking and unlocking logic.
• Stable Mechanism Operation – appropriate closing force, no need for modifications to mountings or wiring.
• User Safety – correct locking reduces the risk of accidental door opening while driving.

For workshops and users, this translates to faster installation, a lower risk of operational issues, and the preservation of the door's factory performance parameters.

Condition, Installation, and Service Application

The offered lock is a used original part, allowing for an economical repair of the locking system while maintaining the manufacturer's intended design. The mechanism is intended for direct installation in the front right door, utilizing factory mounting points and the standard wiring harness.

Before installation, a standard inspection of the door wiring harness, linkages, and adjustment of the door's position relative to the body is recommended to fully utilize the lock's capabilities and ensure smooth closing.

Mercedes Locks and Latches – Selection and Offer

If you are looking for other locks and latches for your Mercedes vehicle, check out the dedicated category Mercedes Locks and Latches, where you will find a wide selection of locking components for various models.

For a comprehensive approach to vehicle servicing, including component selection by part numbers, the guide article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair may be helpful, discussing, among other things, the principles of identifying parts by OEM markings.