every single part of the bike has a part to play so hope you get it
Theres a small wooden sound post inside which needs specialist repair if it becomes dislodged but the strings, wooden bridge and tailpiece at the bottom can normallly be replaced from an instrument...
i think it is the part in your imagination.
COMPRESSOR, CONDENSER, EVAPORATOR, ORIFICE TUBE, THERMAL EXPANSION VALVE , RECEIVER-DRIER, ACCUMULATOR.
frontal. parietal. occipital