For the 2000 Toyota Corolla, both the low-beam and high-beam headlights use a 9003 bulb. The supplied fitment data does not list separate headlight options by housing type, so verify the original bulb and headlamp assembly before ordering.
Front turn signals and parking lights use 3157A amber bulbs. At the rear, the brake and tail lights use 3157R, while the rear turn signals use 3156. Reverse lights and the center stop light are both listed as 921 bulbs.
Other useful fitments include 194NA for the rear side markers and DE3175 for both the dome and courtesy lights. The license plate and trunk lighting each list two possible sizes: 194 or 7441. Compare the existing bulb and socket before replacement. For the ash light, the listed choices are 2721 (Option 1) or 74 (Option 2), and the original bulb should be compared to determine the correct fit. The ignition light uses 2721. No fog-light bulb fitment is listed for this model year.