Toyota Venza Turn Signal Bulb Size

Additional Notes

• The Toyota Venza front turn signal uses the 194 bulb for the 2021-2024 model years. This is a T10 miniature wedge bulb rated at 12V and 3.78W, standardized under ANSI specifications for the US and Canadian markets.
• Earlier Venza front turn signals use T25 wedge bulbs, though the specific type varies by year. The 2009 and 2012 model years use the 3457NA, while the 2010-2011 model years use the 3357NA.
• The 3457NA and 3357NA are not interchangeable despite sharing the same T25 wedge form factor. The 3457NA carries dual filaments rated at 27W and 7W, while the 3357NA is a single-filament bulb rated at 27W only.
• The "NA" suffix on the 3457NA, 3357NA, and 7440NA designations indicates natural amber glass. This coloring is built into the glass envelope itself rather than applied through a lens or coating.
• The rear turn signal on the Toyota Venza (2009-2012) uses the 7440NA across all four model years. This is a T20 single-filament wedge bulb rated at 12V and 21W.
• The 194 bulb used in the 2021-2024 front turn signal position draws only 3.78W, which is substantially lower than the 21W to 27W ratings of the T20 and T25 bulbs used in earlier Venza positions. This difference reflects the lower power demands of smaller indicator lamp housings.
• All bulb types listed across these specifications conform to ANSI standards recognized in both the United States and Canada, indicating a shared regulatory framework for bulb classification in North American markets.
• The shift from T25 wedge bulbs in the 2009-2012 front turn signal positions to the much smaller T10 194 bulb in the 2021-2024 positions reflects a change in housing design between the two Venza generations, making cross-generation substitution incompatible.