Toyota MR2 Spyder Turn Signal Bulb Size

The Toyota MR2 Spyder front turn signal requires a 7440 bulb size, while rear turn signals use 7440NA, PY21W, or 12496 bulb sizes. The replacement chart covers 2000 to 2005 model years 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.

Front Turn Signal

Years	US Type	EU Type	Shop
2000-2005	7440	W21W	Check Price

Rear Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2003-2005	7440NA	WY21W	Check Price
2002	7507	PY21W	Check Price
2000-2001	12496	12496	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440	Check Price
ANSI standard (US & Canada). Single-filament wedge bulb (T20), natural amber glass. 12V, 21W.	7440NA	Check Price
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W	Check Price
Philips/Osram part number. Halogen bulb, specialty application. 12V.	12496	Check Price

Other Locations

Additional Notes

The Toyota MR2 Spyder uses the 7440 bulb for the front turn signal across all model years from 2000-2005, making it the most consistent fitment in these specifications.
The 7440 is an ANSI-standard single-filament wedge bulb in the T20 form factor, rated at 12V and 21W. It is the standard type used in the United States and Canada.
The 7440NA shares the same T20 wedge form factor, voltage, and wattage as the 7440 but features natural amber glass rather than a clear envelope. This amber tint is built into the glass itself rather than applied as a coating.
The rear turn signal of the Toyota MR2 Spyder used three different bulb types across the 2000-2005 production run, reflecting a notable variation in rear fitment compared to the stable front specification.
The PY21W, fitted to the 2002 rear turn signal, follows the ECE standard used in Europe and worldwide markets. Its BAU15s bayonet base is offset, meaning it is not interchangeable with standard BA15s bayonet bases despite similar physical sizing.
The 12496 is a Philips/Osram part number rather than an ANSI or ECE standard designation, and it is rated at 12V with a halogen construction. Its wattage is not specified in these specifications.
Because the 2000-2001 rear turn signal uses the 12496, the 2002 rear uses the PY21W, and the 2003-2005 rear uses the 7440NA, substituting one rear bulb type for another without confirming socket compatibility would risk an incorrect fitment.
Although the 7440 and 7440NA share the same T20 base and electrical ratings, the choice between them for a given position is determined by whether the lens housing provides its own amber coloring, since regulations require an amber output at the turn signal.