H11 : Single-filament halogen bulb with a PGJ19-2 base. Designed for 12V / 55W systems, it is most commonly used as a primary low-beam headlight or high-output fog light.
H8 :Single-filament halogen bulb with a PGJ19-1 base. Designed for 12V / 35W systems, it is typically used in fog lights or daytime running lights (DRLs) where lower wattage prevents housing heat damage.