Hot runner feed system and diecasting mold arrangement, comprising - a diecasting mold having a fixed mold half and a movable mold half , and - a hot runner feed system comprising a melt manifold and feed block construction having an entry-side feed inflow opening , at least one first and one second exit-side feed outflow opening which open into a mold separation plane between the fixed and the movable mold half , and a casting runner-duct structure that extends so as to branch out from the feed inflow opening to the feed outflow openings , characterized in that - the melt manifold and feed block construction at least in an exit-side block region that includes the two feed outflow openings is made so as to be shortened in a transverse direction parallel with the mold separation plane in relation to a predefined nominal operating extent by an expansion dimension (Δm), and - the melt manifold and feed block construction comprises a melt manifold block having a first exit nozzle that is assigned to the first feed outflow opening , and a second exit nozzle that is assigned to the second feed outflow opening , and an intermediate plate having a first and a second nozzle fitting mouthpiece for fitting the exit nozzles in a centering manner, wherein the first feed outflow opening continues through the first nozzle fitting mouthpiece and the intermediate plate , and the second feed outflow opening continues through the second nozzle fitting mouthpiece and the intermediate plate , and wherein the intermediate plate is made having a mutual spacing (M) of the nozzle fitting mouthpieces from one another that corresponds to an operating temperature spacing of the exit nozzles , and the melt manifold block is made having a spacing of the exit nozzles that corresponds to a room temperature spacing (m) that is smaller in comparison to the operating temperature spacing. - a diecasting mold having a fixed mold half and a movable mold half , and - a hot runner feed system comprising a melt manifold and feed block construction having an entry-side feed inflow opening , at least one first and one second exit-side feed outflow opening which open into a mold separation plane between the fixed and the movable mold half , and a casting runner-duct structure that extends so as to branch out from the feed inflow opening to the feed outflow openings , characterized in that - the melt manifold and feed block construction at least in an exit-side block region that includes the two feed outflow openings is made so as to be shortened in a transverse direction parallel with the mold separation plane in relation to a predefined nominal operating extent by an expansion dimension (Δm), and - the melt manifold and feed block construction comprises a melt manifold block having a first exit nozzle that is assigned to the first feed outflow opening , and a second exit nozzle that is assigned to the second feed outflow opening , and an intermediate plate having a first and a second nozzle fitting mouthpiece for fitting the exit nozzles in a centering manner, wherein the first feed outflow opening continues through the first nozzle fitting mouthpiece and the intermediate plate , and the second feed outflow opening continues through the second nozzle fitting mouthpiece and the intermediate plate , and wherein the intermediate plate is made having a mutual spacing (M) of the nozzle fitting mouthpieces from one another that corresponds to an operating temperature spacing of the exit nozzles , and the melt manifold block is made having a spacing of the exit nozzles that corresponds to a room temperature spacing (m) that is smaller in comparison to the operating temperature spacing. <EOS>