This part is listed by BMW as BMW part number 54377171221 (54-37-7-171-221) and is described as Genuine BMW Gas Spring for Trunk Luggage Compartment Cover for E93 3-Series Convertible (2007-2013) F33 4-Series Convertible (2014-2020), and F83 M4 Convertible (2016-2020).
BMW Fitments:
3 Series
E90 / E91 / E92 / E93 (06-13) > 328i
E90 / E91 / E92 / E93 (06-13) > 335i N54 (07-10)
E90 / E91 / E92 / E93 (06-13) > 335i N55 (11-13)
E90 / E91 / E92 / E93 (06-13) > 335is N54
E90 / E91 / E92 / E93 (06-13) > M3
4 Series
F32 / F33 / F36 (14-20) > 428i
F32 / F33 / F36 (14-20) > 428i xDrive
F32 / F33 / F36 (14-20) > 430i
F32 / F33 / F36 (14-20) > 430i xDrive
F32 / F33 / F36 (14-20) > 435i
F32 / F33 / F36 (14-20) > 435i xDrive
F32 / F33 / F36 (14-20) > 440i
F32 / F33 / F36 (14-20) > 440i xDrive
4 Series
F82 / F83 (2015-2020) > M4 (2015-2020)
