The Daewoo Nubira front and rear turn signal bulbs use a 12496 or PY21W size. The replacement chart covers 1999 to 2002 production years with 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 Nubira turn signal specifications cover model years 1999-2002, with both front and rear positions using two distinct bulb types: 12496 and PY21W.
PY21W is an ECE-standardized single-filament amber bulb rated at 12V and 21W, fitted with a BAU15s offset bayonet base. The offset pin arrangement of the BAU15s base prevents incorrect installation of non-amber bulbs in the same socket.
The 12496 is a Philips/Osram part number designating a 12V halogen bulb intended for specialty automotive applications. It is a manufacturer-specific designation rather than a universal ECE or SAE standard reference.
The front turn signal position on the Daewoo Nubira uses the 12496 bulb for 2001-2002 and the PY21W bulb for 1999-2000, indicating a change in front turn signal specification between the 2000 and 2001 model years.
The rear turn signal position uses the PY21W bulb for 2000-2002, while the 1999 model year uses the 12496 bulb, placing the rear specification change between 1999 and 2000.
In 2001-2002, the front and rear turn signal positions use different bulb types from each other, with 12496 at the front and PY21W at the rear. These two bulb types are not interchangeable due to differing base configurations and specification origins.
In 1999, the front and rear positions also use different bulb types from each other, but in the reverse arrangement: PY21W at the front and 12496 at the rear.
The 2000 model year is the only configuration in these specifications where both the front and rear turn signal positions share the same bulb type, with PY21W fitted at both locations.
Because the BAU15s base of the PY21W is offset, it is physically distinct from the standard BA15s base used on many common single-filament bulbs. A standard BA15s bulb cannot seat correctly in a BAU15s socket.
Both bulb types specified operate at 12V, consistent with standard automotive electrical systems, though the PY21W carries an explicit 21W wattage rating while the 12496 is identified only by its manufacturer part number without a separately listed wattage in these specifications.