Mercedes W164 Head Restraint Guide Front Left Right N/O/S A1649700441

Mercedes W164 Head Restraint Guide Front Left Right is a precision seat mechanism component responsible for the stable guidance and positioning of the headrest in the front seat. Thanks to its factory-fit design for the W164 platform, it ensures correct headrest operating geometry and secure support for the driver's and passenger's head. This is a practical solution for users who want to restore the full functionality of the front seats in their Mercedes in a technically correct manner.

Specifications and technical data

• SKU: A1649700441
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1649700441
• Substitutable numbers: A1649700441, A 164 970 04 41
• Location on the vehicle: Front, Left, Right
• Category: Additional Seat Parts

Purpose and function of the head restraint guide

The head restraint guide in the Mercedes W164 is responsible for the linear guidance of the headrest rods within the seat backrest structure. This component stabilizes movement along the vertical axis, enables smooth height adjustment, and reduces unwanted play that could affect comfort and safety. Using a dedicated guide allows for maintaining the factory operating parameters of the seat mechanism, which is particularly important during post-collision repairs or when replacing damaged components.

Compatibility with front seats

The presented guide is designed for installation in the front seats of the Mercedes W164, with the possibility of application on both the left and right sides. Such a configuration facilitates vehicle servicing – a single type of component can be used in both front seats, which simplifies part selection and reduces the risk of installation errors. Its placement in the seat backrest area ensures that the guide works in direct connection with the headrest adjustment mechanism, influencing ergonomics and support stability.

Benefits of using an original guide

Using an original head restraint guide in the Mercedes W164 allows for maintaining the structural integrity of the entire seating system. Key advantages of this solution include:

• factory fitment to the seat backrest structure and headrest geometry,
• appropriate rigidity and guidance of adjustment elements,
• reduction of operating play in the headrest mechanism,
• maintenance of the correct head position of the user relative to the backrest.

As a result, the seat retains the functionality intended by the manufacturer, and the user receives consistent operation of all adjustment elements within the seat.

Characteristics of the used component

The offered guide comes from disassembly, which means it is an original Mercedes component with a construction consistent with factory standards. The used element allows for an economical repair of the headrest mechanism while maintaining the high quality of workmanship typical for this brand. This solution is particularly beneficial for comprehensive interior service work, where both technical compliance and rational operating costs are important.

Application in seat repairs and upgrades

The head restraint guide is suitable for situations where the adjustment mechanism has been damaged, the backrest deformed, or the guide elements worn out. It can be used both for standard replacement of a single component and during broader work related to seat renovation, upholstery replacement, or interior reconstruction after a collision. Thanks to the preservation of the original mounting geometry, the guide allows for the correct assembly of the entire seat module without the need for interfering with the seat structure.

If you are planning a comprehensive repair or upgrade of the seating area in your Mercedes and need other elements from the same group, such as guides, mounts, or small adjustment parts, check the available parts in the Other Mercedes seat parts category.

If you are also thinking about improving your car's performance and want to better plan your budget for interior repairs and powertrain modifications, it is worth checking out the guide on tuning using second-hand parts – you can find it in the article How to increase engine power: a practical guide to engine tuning with used parts.