Description Reviews MINI Cooper S N14 &N18 Injector Seal ~ From 05/09 till the end by Bosch #13-64-7-600-869. This is a a must have seal when repairing a head on the gen 2 cars. Sold as each, you will need 4 units to do all 4 injectors. Note: You need a special tool to install this seal. We offer a rental here.