Volvo D12C / D12D fuel injector. The injectors are fully restored in a licensed Delphi and Bosch service. The injectors are not inferior in quality to new injectors, because only original parts are used in the restoration of injectors. After checking them on the Delphi injector test stand, the injectors are additionally tested in a real engine, where a working environment is created. The injectors are given a one-year warranty.