Mercedes W164 Seat Headrest Guide Rail Front Left Right N/O/S A1649700841

Mercedes W164 Headrest Guide Front Left Right is a precision component from the headrests category, designed for guiding and stabilizing the headrest in the front seat. A properly selected guide ensures the correct operation of the height adjustment mechanism and safe positioning of the headrest on the left or right side.

Specifications and technical data

• SKU: A1649700841
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1649700841
• Substitutable numbers: A1649700841, A 164 970 08 41
• Location on the vehicle: Front, Left, Right
• Category: Headrests

Purpose and Function of the Headrest Guide

The headrest guide in Mercedes W164 models is responsible for the stable guidance of the headrest post within the seatback structure. This component works with the locking mechanism, allowing for smooth height adjustment and maintaining the set position during driving.

The vehicle placement includes the front seat on the left or right side, allowing the same guide to be used in both front seats, according to the factory configuration of the specific vehicle.

Construction and Fit for the Front Seat

The guide's construction is prepared for factory mounting points in the seatback, ensuring that original mounting points are preserved. The appropriate shape of the guide channel ensures proper guidance of the headrest post and cooperation with the standard adjustment mechanism.

The component is designed for:

• maintaining the headrest's alignment with the seatback,
• minimizing play during adjustment,
• stable positioning at the extreme height adjustment settings.

Benefits of Using an Original Headrest Guide

Using the correct guide in the front seat translates into specific user and service benefits:

• Safe headrest positioning – a correctly functioning guide helps maintain the headrest in the recommended position for cervical spine protection.
• Consistent mechanism operation – reduced jamming and skipping during height adjustment.
• Improved rigidity of the entire headrest assembly – reduced unwanted vibrations and play during driving.
• Easier service installation – fitting the factory seat design facilitates component replacement in workshop conditions.

Component Condition and Service Application

The headrest guide belongs to the group of seat structural components that are often replaced in workshop practice for problems with height adjustment or excessive headrest play. Using a component of this type allows for an economical repair of the headrest system while maintaining compliance with the vehicle's factory specifications.

It is always advisable to confirm the suitability of the guide for a specific vehicle by checking manufacturer markings and seat configuration (left/right side, front of the vehicle), which minimizes the risk of incorrect installation.

Other Mercedes Headrests – Selection and Compatibility

If you also need other components from the Mercedes headrests category for your vehicle, check the available products in the dedicated section: Mercedes Headrests. Focusing on one specific category makes it easier to select compatible components for front and rear seats.

More on the Cost-Effectiveness of Used Parts

When choosing a headrest guide for a Mercedes, it's worth considering the cost-to-quality and fit ratio. If you want to better understand the differences between original, aftermarket, and used parts, check out the guide: Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?. This is a practical source of knowledge when planning vehicle repairs and upgrades.