These adapters allow you to use injectors having regular Bosch connectors (Bosch EV1 style aka Minitimer) on cars equipped with Denso Nippon A connectors (such as VW MK4/MK5 R32).nnUse these adapters to run Siemens 630cc or Siemens 870cc injectors in your MK4 or MK5 R32. nnSold in quantity of 1.