Multipart closure element and manufacturing method therefor

A subassembly element in the form of an intermediate product for a multipart cover element for motor vehicles contains at least two subassembly parts (1, 2, 3), e. g., for a multipart sunroof or sliding roof cover or for a multipart loading zone or cargo space cover, containing edge regions (16A, 16B) on the adjacent edges of the subassembly parts which are correspondingly shaped such that they had least partially overlap in the closed position. All subassembly parts (1, 2, 3) are present in the form of one connected-together part and are shaped in accordance with the predetermined contour of the cover element. A channel-shaped depression (16) is arranged at least in the outer side (10A) of the subassembly element (10) in the edge region in which two respective subassembly parts (1, 2, 3) adjoin one another. The contour of the channel-shaped depression (16) is comprised of the desired contours of the edge regions (16A, 16B) of adjacent subassembly parts (1, 2, 3) of the respective cover element.