Description Reviews MINI Cooper S Turbo Diverter Valve for all Turbo MINI. Works for both N14 engines in the whole R car line (R55-R59). For several years now the stock diverter valves have been a common part to fail. MINI has updated this part a few times now and this is the latest and best one yet. This diverter valve is a direct replacement for your failed valve. The new design may also give you a slight increase in performance, but we know for sure that it will fix the problem of boost lost. Make sure you have a check engine light for this problem.This is the same as a factory part, just in an aftermarket box and comes with a cost savings!