Description Reviews This kit will fit any MINI Cooper with the N12 or N16 Cooper or N14 Cooper S engine to fix a freeze plug that has come out of the head. These are the 2 on the timing chain side. Have a Question? Give us a call, 586-792-6464. MINI Freeze Plug Kit: MINI Freeze Plug 36MM 11-12-7-548-477 MINI Freeze Plug 40MM 07-11-9-906-069