This is a brand new Gear Kit for repairing both Mercedes Headrest Adjuster and Power Seat adjuster mechanics (either side in the car), recommended for below mentioned types and years. If you would like to replace all plastic gears that may get broken in the interior over time, this is the perfect package for you.

If you are not sure whether this item fits your car, please contact me.

This kit contains every part that usually needs replacement. 2 gear kits for the headrests, 4 worm wheels for the seats, 8 gears in total. More than $100 value when sold separately. The seat gears are engineering grade 3D printing material (Polycarbonate or PC). The headrest gears are injection molded, providing perfect geometry, very good rolling properties and low noise. The main improvement over the previous printed version is that these are now install without the need for pressing them in place (see instructions below) 

Color may be slightly different from photo. (Currently the printed gears are light grey colored as of 2025, the injection molded gears are white)

Installation:

Please check that the threaded shaft can rotate freely to prevent stripping the replacement gear. It is recommended to lubricate with grease that has no graphite content. (General purpose grease will do just fine)

Important!! The new version headrest gears can be installed by hand only, no need to press them. I recommend not to use a hammer or any excessive force. When installing the headrest gears, one must install the larger gear first, so that the smaller gear (which can rotate freely) may mesh into it properly. 

The seat adjuster gears can be slowly pressed into position with the locking nut of the shaft.

In case you have any concerns, please contact me.