Fluid line coupling for the mechanical and fluidic coupling of a fluid-carrying component to a fluid-carrying second component, - comprising a pipe body which is comprised by the first component or which can be attached to the first component, - comprising a connecting piece which can be inserted coaxially into the pipe body, which is comprised by the second component or which can be attached to the second component, - comprising a securing clip which is disposed outside on the pipe body, which surrounds the pipe body in a circumferential direction over more than 180° and which is radially adjustable relative to the pipe body between a securing position in which the connecting piece inserted into the pipe body cannot be withdrawn from the pipe body and a releasing position in which the connecting piece inserted into the pipe body can be withdrawn from the pipe body, - wherein the connecting piece has a securing groove on its outer side which extends in the circumferential direction, - wherein the pipe body has a securing slot which extends in the circumferential direction and which is radially in alignment with the securing groove when the connecting piece is inserted in the pipe body, - wherein the securing clip has a radially inwardly projecting securing web on its inner side, which extends in the circumferential direction which in the securing position engages through the securing slot radially into the securing groove and which in the releasing position does not engage in the securing groove, characterized in, - that the pipe body has on its outer side additionally at least one guide groove which extends in the circumferential direction, - that the securing clip has on its inner side additionally at least one radially inwardly projecting guide web which at least in the securing position engages radially in the appurtenant guide groove. - comprising a pipe body which is comprised by the first component or which can be attached to the first component, - comprising a connecting piece which can be inserted coaxially into the pipe body, which is comprised by the second component or which can be attached to the second component, - comprising a securing clip which is disposed outside on the pipe body, which surrounds the pipe body in a circumferential direction over more than 180° and which is radially adjustable relative to the pipe body between a securing position in which the connecting piece inserted into the pipe body cannot be withdrawn from the pipe body and a releasing position in which the connecting piece inserted into the pipe body can be withdrawn from the pipe body, - wherein the connecting piece has a securing groove on its outer side which extends in the circumferential direction, - wherein the pipe body has a securing slot which extends in the circumferential direction and which is radially in alignment with the securing groove when the connecting piece is inserted in the pipe body, - wherein the securing clip has a radially inwardly projecting securing web on its inner side, which extends in the circumferential direction which in the securing position engages through the securing slot radially into the securing groove and which in the releasing position does not engage in the securing groove, characterized in, - that the pipe body has on its outer side additionally at least one guide groove which extends in the circumferential direction, - that the securing clip has on its inner side additionally at least one radially inwardly projecting guide web which at least in the securing position engages radially in the appurtenant guide groove.