The Lexus ES350 parking light utilizes bulb sizes 7444NA, 7443NA, and 168 across various production versions. Data for the specified components covers the period from 2007 through 2018.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus ES350 front parking light uses three distinct bulb sizes across its model years: the 7444NA, 7443NA, and 168.
The 7444NA and 7443NA are both T20 dual-filament wedge bulbs rated at 12V with a 21W/5W output, and both feature natural amber glass, which produces an amber color output without the need for a tinted lens or housing filter.
The dual-filament design of the 7444NA and 7443NA means each bulb contains two separate filaments, allowing it to serve two lighting functions, such as parking and turn signal, within a single unit.
Although the 7444NA and 7443NA share the same T20 form factor, voltage, wattage, and amber glass coating, they are not confirmed as interchangeable in these specifications, as the Lexus ES350 uses each in distinct model years.
The 168 is a T10 miniature wedge bulb rated at 12V and 4.9W, making it a single-filament, low-wattage bulb relative to the T20 units used in later model years.
The Lexus ES350 front parking light used the 168 bulb from 2007-2012, representing the earliest generation covered by these specifications.
From 2013-2014, the ES350 front parking light transitioned to the 7443NA, marking a shift from the T10 single-filament 168 to a T20 dual-filament wedge format.
The 7444NA is specified for the 2015-2016 and 2018 model years, while the 7443NA covers 2013-2014 and 2017, indicating that the two similar T20 bulbs alternate across certain consecutive model years.
All three bulb sizes conform to ANSI standards applicable in both the United States and Canada, meaning they follow a standardized sizing and performance classification system used across North American automotive applications.
The T10 and T20 designations refer to the tubular bulb body width, with T10 indicating a narrower profile than T20, which is a relevant fitment consideration when replacing bulbs across different ES350 generations.