nozzle holder with two-spring injection nozzle function of the nozzle holder, nozzle, nozzle needle, pressure pin and pressure spring. function of the inlet and outlet ducts. description ordernumber 1175 see also: single-vane vacuum pump downdraught carburetor 1B1 feed pump, diesel (single-acting) Cylinder head of a petrol direct injection engine M 271 Evo Mercedes Benz