Lexus ES250 front turn signal bulbs use 7444NA or 1157NA sizes, while rear turn signal bulbs use 1156 size. The chart contains bulb size specifications across 1990 to 2024 production years for replacement purposes.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7444NA is a dual-filament wedge bulb in the T20 form factor, rated at 12V with a 21W main filament and a 5W secondary filament. Its natural amber glass produces the orange turn signal color without relying on a colored lens or coating.
The Lexus ES250 (2021-2024) uses the 7444NA for the front turn signal position. The T20 wedge base on this bulb is not interchangeable with bayonet-style bases, so substituting a bayonet-mount bulb is not physically possible without modification.
The 1157NA shares the same 12V, 21W/5W dual-filament electrical rating as the 7444NA but uses a BAY15d bayonet base rather than a wedge base. The BAY15d base has two pins offset at different heights, which prevents accidental installation in a single-filament BA15s socket.
The Lexus ES250 (1990-1991) uses the 1157NA for the front turn signal. Despite identical wattage ratings between the 1157NA and 7444NA, the differing base types mean these two bulbs serve different sockets and are not interchangeable with each other.
The 1156 is a single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base. The BA15s base has a single pin, distinguishing it from the dual-pin BAY15d base found on the 1157NA.
The 1990-1991 ES250 rear turn signal position takes the 1156. Because the 1156 carries only one filament, it cannot perform a secondary function such as a parking light, unlike the dual-filament 1157NA used at the front of the same vehicle.
All three bulb types listed across these specifications conform to ANSI standards recognized in both the United States and Canada, indicating a shared North American market fitment for the ES250 across all listed model years.
The "NA" suffix on the 7444NA and 1157NA designates natural amber glass, which is a factory-tinted envelope rather than a clear bulb paired with an amber lens. Substituting a clear equivalent in either position would alter the color output at the lens.