Mercedes W166 Front Seat Headrest Head Rest Left Right N/O/S Leather A1669702978

Mercedes W166 Front Seat Headrest Head Rest Left Right N/O/S Leather is an original interior component designed for installation on the front driver or passenger seats in Mercedes vehicles. The leather finish ensures consistency with the factory upholstery, and the design, tailored to the specific W166 generation, guarantees proper head support and comfort during daily use.

Specifications and technical data

• SKU: A1669702978
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669702978
• Substitutable numbers: A1669702978, A 166 970 29 78
• Location on the vehicle: Front, Left, Right
• Category: Headrests

Purpose and fitment for Mercedes W166

The presented headrest has been designed for the front seats of the Mercedes W166 class, with the possibility of installation on both the left and right sides. This means it can be used as a replacement part for either the driver or passenger seat, maintaining the factory geometry, height, and head support angle.

Thanks to a design consistent with the manufacturer's original specifications, the headrest works with the standard seat guides and height adjustment mechanism. This allows for the preservation of the ergonomics intended by Mercedes engineers, without the need for seat frame modifications or additional upholstery alterations.

Construction and functional properties

A key advantage of this component is its leather finish, which increases perceived comfort and makes it easier to keep the interior clean. The leather withstands intensive use well and, with proper care, maintains an aesthetic appearance for a long time. The headrest construction has been developed to provide stable neck and head support, which is important both on long journeys and during daily city driving.

The item belongs to the Headrests category, meaning its primary function is to improve passive safety and ergonomics while driving. A properly selected headrest limits unwanted head movement during sudden braking or collisions, while also allowing for comfortable height adjustment to suit the user's stature.

Condition, origin, and service application

The product comes from a dismantled Mercedes vehicle and is offered as a used component, which is a cost-effective solution for users looking for original parts at a reasonable price. Such headrests are frequently used when replacing damaged parts after a collision, during interior restoration, or when returning a vehicle to its factory specification after previous modifications.

In practice, the headrest can be used both as a single replacement and as part of broader seat work – for example, when replacing upholstery, seat foam, or guides. By maintaining the original form and material, the vehicle's interior remains visually consistent, with no differences in texture or shade between individual seat components.

Benefits of installing an original headrest

Using an original headrest in a Mercedes W166 allows you to maintain compliance with the factory interior design, which is important from both a comfort and vehicle value perspective. Compared to universal replacements, this dedicated component ensures:

• proper fitment to the seat structure,
• visual consistency with other upholstery elements,
• preservation of the ergonomics intended by the manufacturer,
• easier installation without additional adaptations.

For users who care about the condition of the cabin, such a headrest is a practical way to restore comfort and aesthetics after mechanical damage, wear, or interference with the original equipment.

If you are planning a comprehensive repair or upgrade of the front seat area in your Mercedes and need other items from the same group, such as head supports, center headrests, or additional adjustable headrests, check the available parts in the Mercedes Headrests category.

For those interested in the broader use of dismantled parts in car upgrade projects, inspiration regarding visual and mechanical tuning using original components can be found in the article Emotions and design – visual and mechanical tuning of a Seat using dismantled components.