Factory bulb sizes and relevant BulbFacts-tested replacement evidence for the 2018 Toyota Prius.
These products were physically tested by BulbFacts, but the tests were not performed in this exact vehicle unless a card explicitly says otherwise.
High Beam: 9005 / HB3
High Beam 9005 / HB3
The Night Breaker 200 is the top standard-wattage reflector recommendation at the time of review. Anything scoring higher in the reflector chart uses much higher wattage, while the NB200 keeps the simple drop-in halogen format.
General BulbFacts housing testA matching bulb size identifies fitment; it does not by itself prove optical compatibility or make a conversion a vehicle-specific recommendation.
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Available exterior and interior lighting data for this model year.
Fitment, factory-system research, and BulbFacts product tests remain separate evidence. A matching bulb size does not by itself make a conversion a vehicle-specific recommendation.
| Position | Bulb or system | Evidence status |
|---|---|---|
| High BeamLighting: halogen | 9005 / HB3 | Likely fitment |
Fitment note: Verify the installed bulb, connector, housing, and factory system before ordering. A bulb-size match is not automatically a conversion recommendation or proof of vehicle-specific testing.
