The 4K numbers in your photos are upraised casting numbers. The 4K model/serial number is “stamped” into a part – if I remember right, it’s on the port side of the transom clamps or on some metal near that. It is stamped into the metal, not upraised. Below is a model list that includes specs for the 4K. Click on it or print it to make it big enough to read.
Dave
