Description Reviews MINI Cooper Dowel Pin 07-14-7-543-519. This dowel pin locates the cylinder head to the block deck on all Gen 2 MINI Cooper & Cooper S's. Fits all N12, N14, N16, & N18. This pin is handy when rebuilding a motor. The pin can be stuck, bent, or missing. The size is M14x15 and come directly from MINI.