Daewoo Leganza front turn signal bulbs use P21W size while rear turn signal bulbs use 12496 or PY21W size. The replacement chart covers 1999 to 2002 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Daewoo Leganza front turn signal position uses the P21W bulb across all documented model years from 1999-2002, making it the most consistently specified bulb in these fitment records.
P21W is an ECE-standardized single-filament signalling bulb rated at 12V and 21W, fitted with a BA15s bayonet base, and is widely used in European and international automotive applications.
The rear turn signal position of the Daewoo Leganza alternates between two different bulb types depending on the model year, with PY21W specified for 1999 and 2001, and the Philips/Osram 12496 specified for 2000 and 2002.
PY21W is an ECE-standardized amber single-filament bulb rated at 12V and 21W. Its BAU15s bayonet base has an offset pin arrangement that physically prevents it from being seated in a BA15s socket, making it non-interchangeable with the P21W despite sharing the same wattage rating.
The 12496 is a Philips/Osram part number designation for a 12V halogen bulb intended for specialty automotive applications, and it serves as the rear turn signal bulb in the Leganza for model years 2000 and 2002.
Because the rear turn signal specification changes between adjacent model years, confirming the exact model year before sourcing a replacement rear bulb is a necessary step to avoid a fitment mismatch.
The base type difference between P21W (BA15s) and PY21W (BAU15s) is a deliberate engineering distinction. The offset pins on the BAU15s base are a keying feature that prevents incorrect bulb installation in sockets designed for amber-only signalling functions.