nozzle holder with hole-type nozzle function of the nozzle holder, nozzle, nozzle needle, pressure pin and pressure spring. function of the inlet and outlet ducts. description ordernumber 1174 see also: Demand-driven oil pump with suction stage (V8) Common-rail high pressure pump with fuel-delivery regulation valve and injector swivel-vane vacuum pump for diesel engine Cylinder head with piezo injector