Holley 1904 Chevrolet V8 Ford 6 GMC V8 International 6 Mercury 6 rebuild kit [HK421]

Holley 1904 single barrel rebuild kit

High quality American made kit, contains all items required for overhaul of these Holley carburettors:
Black nitrate coated gaskets, Enrichment valve, Float bowl gaskets including glass bowl gasket, Spark valve [used on some 1904s], 
Accelerator pump diaphragm, complete needle & seat unit with all clips and spring, Throttle body gasket, Flange gasket,
Enrichment valve gasket, Choke thermostat gasket, Spark Control Valve, Clean-out Plugs, Balls, Clips and Instructions 

NOTE: Pump stem length in this kit is 1.395” [35.5mm]
See kit no.HK4043 for pump stem 1.292” [32.8mm]

You must match your carburetor number to get the correct kit