Your link to a picture isn't working. I don't think others can view images you have hosted on a Google drive or cloud account. It has to be a picture hosting/sharing site or post directly to the forum.
A quick search on Google using the 8 digit part numbers you supplied reveals the "16124355" number could possibly be a DRAC box. It converts speed sensors signal from the speed sensor into a signal the ecm and speedo can use. Basically, the speedo and ecm speak one language and the speed sensors speaks a different language, the DRAC box is the translator. Is a fairly small plastic box with electrical plugs going to it, the box is possibly green in color?