This is a repair kits(air spring) for Mercedes W221front air strut. 

The rubber is made by the Chinese No.1 truck air spring manfuacture, quality is very good.

Can be installed in the following for vehicles:

for Mercedes W221, S-Class, 2007-2012

this repair kits used for the following strut with the part number:

A 221 320 49 13,2213204913

A 221 320 93 13,2213209313

For more details, please call us.