Mercedes W204 Rear Seats Folding Headrest Actuator A2129700026

Mercedes W204 Rear Seats Folding Headrest Actuator is an original component from the Seats and benches group, designed for precise adjustment of the rear headrest in Mercedes vehicles. It enables convenient positioning of the rear passenger head support, improving ergonomics and safety while driving. This used OEM component is a sensible choice for professional repairs or restoring the factory functionality of the rear interior.

Specifications and technical data

• SKU: A2129700026
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2129700026
• Substitutable numbers: A2129700026, A 212 970 00 26
• Location on the vehicle: Rear
• Color: Black
• Category: Seats and Sofas

Purpose and function in the seat system

The headrest adjustment actuator is mounted in the rear of the vehicle and works in conjunction with the backrest adjustment mechanism and the seat structure. It is responsible for the smooth adjustment of the headrest position, which allows for height customization according to the passenger's stature and improves travel comfort on longer journeys. Thanks to the electric drive, adjustment is effortless while maintaining consistent settings.

Compatibility with Mercedes W204

The presented actuator has been designed for the Mercedes W204 platform, which ensures a proper fit to factory mounting points and compatibility with the vehicle's electrical system. The original design ensures proper cooperation with seat control modules and comfort control logic, without the need for modifications or adaptations.

Design characteristics

The component is intended for installation in the rear cabin area, within the passenger seat. The black housing facilitates aesthetic integration with the factory interior finish and upholstery elements. The actuator design is optimized for operation in confined spaces, allowing for full functionality of the adjustment mechanism without interfering with the seat geometry.

Condition and service application

As a dismantled part, the headrest adjustment actuator is a practical solution for post-accident repairs, mechanical damage, or failures of the rear seat adjustment system. It allows for the restoration of electric adjustment functionality without the need to purchase a new, expensive component, while maintaining the original character of the Mercedes interior equipment.

Benefits of installing an original actuator

Using an original actuator in the headrest adjustment system translates into:

• maintaining the factory ergonomics of the rear seat,
• proper cooperation with the electrical system and comfort controls,
• consistent appearance with other black-colored elements,
• the possibility of an economical repair without sacrificing electric adjustment.

If you are planning a comprehensive repair or upgrade of the rear seat area in your Mercedes and need other elements from the same group, such as guides, frames, or backrest adjustment mechanisms, check the available parts in the Mercedes Seats and benches category.

To better plan your interior upgrade and understand how replacing seat components affects comfort and vehicle value, it is worth reading the guide: Interior metamorphosis: how branded dismantled seats improve comfort and increase car value.