Toyota Prius Parking Light Bulb Size

The Toyota Prius parking light requires bulb sizes 12961, 7444NA, 7443NA, or 168 depending on the specific version of the vehicle. Available data for the lighting components covers the range from 2001 to 2019.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Parking Light

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
2022	12961	12961	Check Price
2017-2018	7444NA	WY21/5W	Check Price

Parking Light

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
2019	12961 (Without LED Parking Lights)	12961	Check Price
2017-2018	7444NA (Without LED Parking Lights)	WY21/5W	Check Price
2016	7443NA (Without LED Parking Lights)	WY21/5W	Check Price
2004-2015	12961	12961	Check Price
2001-2003	168	W5W	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price
ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W.	7444NA	Check Price
ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W.	7443NA	Check Price
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W.	W5W	Check Price

Other Locations

Additional Notes

The 12961 is a Philips-designated miniature wedge bulb in the T10 form factor, operating at 12V and 5W with a W2.1x9.5d base. It is the most frequently specified front parking light bulb across the Toyota Prius lineup, covering model years 2004-2015 and 2022 without interruption in those ranges, as well as 2019.
The 168 is an ANSI-standard T10 miniature wedge bulb rated at 12V and 4.9W. Although it shares the same T10 form factor as the 12961, its wattage differs slightly, and the two are listed under separate part numbers, indicating they are not treated as interchangeable in these specifications.
The 7444NA and 7443NA are both ANSI-standard dual-filament T20 wedge bulbs with natural amber glass, each rated at 12V with a 21W high filament and a 5W low filament. Their amber coloring is produced by the glass itself rather than a coating, which is the defining characteristic of the "NA" designation.
The 7444NA and 7443NA differ by a single digit in their part numbers. The 7443NA is specified for the 2016 Toyota Prius (without LED parking lights), while the 7444NA covers 2017-2018 (without LED parking lights). These two bulbs are not listed as interchangeable despite their near-identical designations.
The T20 dual-filament bulbs (7444NA and 7443NA) represent a significantly higher wattage draw than the T10 single-filament bulbs used in other model years. The 21W filament on the T20 is more than four times the output of the 5W 12961, reflecting a fundamentally different bulb category rather than a minor variation.
For model years 2016-2019, the front parking light bulb specification is conditional on whether the vehicle was built with or without LED parking lights. This means two different bulb sizes apply to the same model year depending on the trim or factory configuration of the Toyota Prius.
The 2018 model year carries two separate entries: one listing 7444NA without a condition, and another listing 7444NA specifically for vehicles without LED parking lights. Both entries point to the same bulb size for that year.