The Lexus ES300h parking light utilizes 7443NA and 7444NA bulb sizes for the lighting components. Data for the specified vehicle covers the range from 2013 through 2018.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7444NA and 7443NA are the two bulb sizes specified for the Lexus ES300h front parking light across the 2013-2018 model years.
Both the 7444NA and 7443NA are ANSI-standardized dual-filament wedge bulbs built to the T20 form factor, rated at 12V with a 21W/5W power split between their two filaments.
The "NA" suffix in both designations denotes natural amber glass, meaning the amber color is produced by the glass envelope itself rather than by a painted or coated lens.
The dual-filament design of both bulb types allows a single unit to serve two lighting functions simultaneously, with the higher 21W filament typically assigned to the brighter stop or turn signal function and the lower 5W filament assigned to the parking or tail function.
The 7444NA and 7443NA share the same T20 wedge base, voltage rating, and wattage values, which places them in the same general bulb family despite carrying different part numbers.
For the 2014 and 2018 model years, the ES300h front parking light is specified with the 7444NA, while the 2013, 2015, and 2016 model years are specified with the 7443NA.
The 2017 model year is associated with both the 7444NA and 7443NA within the provided specifications, indicating that more than one fitment entry exists for that year.