The "powerlock" which Buck finds and uses to ward off the space vampire is Commander Adama's Council of the Twelve medallion from Battlestar Galactica (1978).
The freighter that brings the Vorvon to the station is named the "Demeter" - that was the name of the ship Dracula used to sail to England. in Bram Stoker's novel. In both stories, the ships were derelict and crashed into port. A captain's journal or log was found which described how the crew members were killed off, one by one, by some unknown presence. In the original Dracula story, the log was written, while in Space Vampire, the log was a video journal.
One of the victims in the shuttles name is Helson, as in Van Helsing of various vampire stories in history.
The derelict freighter Demeter is actually a miniature of the Gemini freighter from Battlestar Galactica (1978).
The shuttle model used here was originally used as Ardala's Shuttle. The model now sports a different paint job and is modified to separate into 2 ships.