A dispenser head (1) for assembly on two parallel, hollow actuator rods, said head being made as a single piece of plastics material and comprising: two parallel coupling sleeves (11, 12) for engaging with respective ones of the actuator rods, the sleeves defining respective inlet ducts (110, 120); a dispenser endpiece (13) defining at least one outlet duct discharging into at least one dispenser orifice (1310, 1320); and a cross member (10) linking the sleeves to the endpiece, the cross member defining at least one connection duct (101, 102) linking the inlet ducts (110, 120) to the outlet duct(s) (1310, 1320), said at least one connection duct extending transversally both relative to the sleeves and relative to the outlet duct(s), said at least one connection duct (101, 102) including an access opening (1010, 1020) closed by a closure element (14, 15),the dispenser head being characterized in that the closure element (14, 15) is made integrally with the remainder (10, 11, 12, 13) of the head.