There seem to be a lot of variations of the part depending on central locking or not, "radio remote" or not, whatever that is, and left or right drive (lhd or rhd).
VOLKSWAGEN BEETLE [BE] (USA) 1998: BODY: 83700. DOOR LOCK; INNER ACTUATOR; DOOR HANDLE, EXTERIOR
VOLKSWAGEN BEETLE [BE] (USA) 1998: BODY: 83700. DOOR LOCK; INNER ACTUATOR; DOOR HANDLE, EXTERIOR