nozzle holder set with 4 injection nozzles Four injection nozzles (Nos. 1173 to 1176) mounted on one model board. Also a dismantled nozzle holder along with various nozzles, and an uncut nozzle holder. description ordernumber 1177 see also: nozzle holder with hole-type nozzle Common-rail high pressure pump with fuel-delivery regulation valve downdraught carburetor 1B1 cylinder head – four-valve engine