Mercedes-Benz S-Class W221 Headrest Folding Mechanism Rear Seat A2219700125

The Mercedes W221 Rear Headrest Mechanism is a component from the Seats and Upholstery category, designed for the rear interior of the S-Class limousine. It ensures proper headrest operation, providing stable head support for passengers and maintaining the factory functionality of the rear seat. This solution is for users who want to restore the full functionality of the headrest adjustment system without altering the seat structure.

Specifications and technical data

• SKU: A2219700125
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2219700125
• Substitutable numbers: A2219700125, A 221 970 01 25, KZ
• Location on the vehicle: Rear
• Category: Seats and Sofas

Purpose and Function of the Headrest Mechanism

The presented mechanism is dedicated to the rear of the vehicle, where it is responsible for precise guidance and maintaining the headrest in the set position. By preserving the original mounting geometry, it integrates with the rear seat backrest structure, allowing for:

• correct headrest height adjustment for rear passengers,
• stable head support during driving,
• maintaining the factory seating comfort in the Mercedes S-Class W221 generation.

The mechanism operates in the rear cabin zone, therefore its correct functioning is important for both ergonomics and passive safety of passengers.

Construction and Fit for Mercedes W221 Seats

As a component from the Seats and Upholstery group, the mechanism has been designed for the specific structure of the rear seat backrest in the Mercedes W221. This means that:

• it fits the factory mounting points in the backrest,
• it works with the standard seat frame and headrest guides,
• it allows for maintaining the original finishing line of the rear seat.

Such a fit facilitates installation and reduces the need for additional upholstery or seat structure modifications. For workshops and users, this translates to predictable working time and a lower risk of installation problems.

Characteristics of a Used Component

The mechanism comes from disassembly, which allows for consistency with the factory solutions used by Mercedes in the W221 model. A used component of this type is often chosen as a reasonable compromise between cost and maintaining the original interior specifications. In practice, this means:

• maintaining a structure consistent with factory equipment,
• the possibility of replacing a damaged mechanism without changing the interior's character,
• easier identification and selection of parts based on vehicle technical data.

For owners of premium cars, this is a way to maintain a cohesive, elegant interior without the need for costly replacement of the entire rear seat.

Practical Application and Benefits of Installation

Installing the headrest mechanism in the rear of the Mercedes W221 is particularly important when problems arise with maintaining the headrest position or its smooth adjustment. Replacing a damaged component with a functional one allows for:

• restoring full headrest adjustment functionality,
• increasing travel comfort for rear passengers,
• maintaining the interior's aesthetics and ergonomics at a level appropriate for the premium segment.

By preserving the original seat construction, the mechanism integrates well with the existing interior layout, and servicing can be performed using the standard procedure for disassembling the backrest and headrest.

More Interior Components and Practical Knowledge

If you are planning a comprehensive refresh of your rear seat or looking for other components from the seats and upholstery category for your Mercedes, check the available parts in the Mercedes Seats and Upholstery category.

When planning an interior upgrade or replacing several seat components, it's worth familiarizing yourself with practical tips on selecting and installing used components – detailed advice can be found in the article Premium Interior for Half the Price: Used Seats, Steering Wheels, and Multimedia.