For the 2000 Volkswagen Jetta, the low-beam and high-beam headlights both use a 9007 bulb. This means the same bulb size is listed for both headlight functions, simplifying replacement when servicing the main headlights.
The supplied fitment data does not identify a separate bulb variation for projector, non-projector, or other headlight configurations. Confirm the existing bulb and headlamp assembly before ordering if the vehicle has been modified or the housing has been replaced.
For the front fog lights, the listed options are H3 and H3C. Check the marking on the installed fog-light bulb or compare the socket and connector before purchase, since the supplied data includes both designations. No front turn-signal or reverse-light bulb fitment is provided here.