NavCom parts

The NavCom parts are quest items in Fallout 2.

Characteristics
These are computer parts that look like they slot into the interior of a machine. The fact that they say "Poseidon Oil" and "Navigational Computer" on them lead you to believe they fit into a Poseidon Oil Navigational Computer.

Location
The NavCom parts can be found in a locker on the third level of Vault 13 in Fallout 2.