The Daewoo Leganza high beam headlight uses a 9005 bulb size while the low beam headlight requires an H1 bulb size. The replacement chart covers vehicle production spanning 1999 to 2002.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Daewoo Leganza uses two distinct bulb types across its headlight system: the 9005 for high beam and the H1 for low beam, a split that held consistent across the 1999-2002 model years.
The 9005 is governed by the ANSI standard, which is the regulatory framework used in the United States and Canada. It is a single-filament halogen bulb rated at 12V and 65W, and it uses a P20d base.
The H1 operates under the ECE standard, the regulatory framework used across Europe and much of the world, though it also carries approval for use in the United States and Japan. It is a single-filament halogen bulb rated at 12V and 55W, fitted with a P14.5s base.
The 9005 and H1 are not interchangeable. Their base types differ, with the P20d on the 9005 and the P14.5s on the H1, meaning neither bulb can physically seat in the other's socket.
The wattage difference between the two bulbs is notable. The 9005 draws 65W while the H1 draws 55W, reflecting the higher output typically associated with high beam applications.
Because both the 9005 and H1 are single-filament designs, each bulb serves only one lighting function. This is why the Leganza's headlight system requires a separate bulb for each beam rather than a dual-filament unit handling both.