The Daewoo Leganza uses a 168 bulb size for front side marker applications and a P21/5W bulb size for rear side marker applications. The replacement chart covers vehicle production years spanning 1999 to 2002 with corresponding bulb size specifications.
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 side marker positions: the 168 for the front and the P21/5W for the rear, across all model years from 1999-2002.
The 168 bulb follows the ANSI standard, which governs bulb specifications in the United States and Canada. It is a miniature wedge-base type in the T10 form factor, rated at 12V and 4.9W.
The T10 wedge base on the 168 bulb connects by friction fit rather than a twist or bayonet mechanism, making it a tool-free replacement in most housings.
The P21/5W is an ECE-standard bulb, a classification used across Europe and much of the world. Its presence in the Leganza rear side marker reflects the vehicle's international engineering origins.
The P21/5W uses a BAY15d bayonet base, which is an offset dual-pin mount. The offset pin placement is a deliberate design feature that prevents incorrect orientation during installation.
The P21/5W carries a dual-filament design rated at 21W and 5W on the same bulb. In a rear side marker application, only one filament is typically active, though the housing and socket must be compatible with the full BAY15d configuration.
The wattage difference between the two bulb types is significant. The front 168 draws 4.9W, while the rear P21/5W carries filaments rated at 21W and 5W, meaning the rear circuit is designed to handle a substantially higher electrical load.
The 168 and P21/5W are not interchangeable. They differ in base type, wattage, filament count, and regulatory standard, and neither can substitute for the other in the Leganza's side marker sockets.