An aircraft engine, comprising: a fuel manifold having an inlet nozzle, the fuel manifold mounted at a first mounting point of the aircraft engine, the inlet nozzle having a nozzle bore facing in a first direction; a fuel source mounted at a second mounting point of the aircraft engine, the fuel source having a source bore facing in a second direction; and a fuel manifold adapter in fluid communication between the fuel source and the inlet nozzle, the fuel manifold adapter characterised in that it comprises: a body having: a body-output interface defining a downstream end of a body passage including a body bore about a bore axis, the body-output interface movably and fluidly connectable to the inlet nozzle of the fuel manifold; and a body-input interface defining an upstream end of the body passage, the body-input interface rigidly and fluidly connectable to the fuel source; and a transfer tube having an upstream-tube end slidably engaged with the body along the bore axis via the body bore, the transfer tube having a downstream-tube end opposite the upstream-tube end slidably engageable along the bore axis with the inlet nozzle, the downstream-tube end defining a downstream end of the fuel manifold adapter relative to fuel flow through the fuel manifold adapter. a fuel manifold having an inlet nozzle, the fuel manifold mounted at a first mounting point of the aircraft engine, the inlet nozzle having a nozzle bore facing in a first direction; a fuel source mounted at a second mounting point of the aircraft engine, the fuel source having a source bore facing in a second direction; and a fuel manifold adapter in fluid communication between the fuel source and the inlet nozzle, the fuel manifold adapter characterised in that it comprises: a body having: a body-output interface defining a downstream end of a body passage including a body bore about a bore axis, the body-output interface movably and fluidly connectable to the inlet nozzle of the fuel manifold; and a body-input interface defining an upstream end of the body passage, the body-input interface rigidly and fluidly connectable to the fuel source; and a transfer tube having an upstream-tube end slidably engaged with the body along the bore axis via the body bore, the transfer tube having a downstream-tube end opposite the upstream-tube end slidably engageable along the bore axis with the inlet nozzle, the downstream-tube end defining a downstream end of the fuel manifold adapter relative to fuel flow through the fuel manifold adapter. a body having: a body-output interface defining a downstream end of a body passage including a body bore about a bore axis, the body-output interface movably and fluidly connectable to the inlet nozzle of the fuel manifold; and a body-input interface defining an upstream end of the body passage, the body-input interface rigidly and fluidly connectable to the fuel source; and a body-output interface defining a downstream end of a body passage including a body bore about a bore axis, the body-output interface movably and fluidly connectable to the inlet nozzle of the fuel manifold; and a body-input interface defining an upstream end of the body passage, the body-input interface rigidly and fluidly connectable to the fuel source; and a transfer tube having an upstream-tube end slidably engaged with the body along the bore axis via the body bore, the transfer tube having a downstream-tube end opposite the upstream-tube end slidably engageable along the bore axis with the inlet nozzle, the downstream-tube end defining a downstream end of the fuel manifold adapter relative to fuel flow through the fuel manifold adapter.