If you drive A-series cars long enough, you will eventually have to replace the water pump bypass hose.
These are the best quality available to fit without removing the cylinder head, but these fluted rubber hoses have a bad reputation.
We recommend carrying a spare.
Recommend: 1x 12A1093MS per Mini.
For bypass adaptor tube, see 12A2075
For Kevlar bypass hose GZA2083.