Dear customer,
Thank you for your question.
According to the provided VIN code wdd2221322a******, the requested Gearbox service kit 171785 FEBI BILSTEIN is not suitable for your vehicle and should be only original one. The OEM part numbers are OEN: A 221 277 01 00 for Filter, OEN: A 220 271 01 80 for Gasket, OEN: MB 236.15 for Oil (9,00L for the replacement). Please, contact the Official Dealer.
If you have any questions, feel free to contact us.
Best regards,
the 123spareparts.co.uk team