Toyota Tacoma Headlight Bulb Size

Additional Notes

• The 9003 bulb is the most frequently specified type across Toyota Tacoma headlight data, covering both high beam and low beam positions for model years 1998-2015 and appearing in 1997 models equipped with halogen capsule headlamps. It is a dual-filament halogen bulb built to the ANSI standard, operating at 12V with a 60W high beam filament and a 55W low beam filament, and it uses a P43t base.
• Because the 9003 carries two filaments within a single housing, it serves both the high beam and low beam functions simultaneously in the same socket, which is why the specifications list it identically under both sub-parts for those model years.
• The H6054 is a 5x7-inch rectangular sealed beam unit specified for the Toyota Tacoma for 1995-1996 and for 1997 models without halogen capsule headlamps. Unlike the other bulb types in these specifications, the H6054 is not a replaceable bulb; the entire lens-and-filament assembly is replaced as one unit.
• The 1997 Toyota Tacoma is the only model year in these specifications where two different high beam and low beam bulb types are listed simultaneously, with fitment depending on whether the vehicle was built with halogen capsule headlamps or sealed beam headlamps.
• The 9005 is a single-filament halogen bulb rated at 12V and 65W, built to the ANSI standard with a P20d base, and it is specified for the high beam position on the Tacoma for 2021 and 2023.
• The H9 shares the same 12V, 65W rating as the 9005 but follows the ECE standard and uses a PGJ19-5 base rather than the P20d base of the 9005. Despite the identical wattage, the two bulbs are not interchangeable due to their different base configurations.
• The H11 is a single-filament halogen bulb rated at 12V and 55W, following the ECE standard with a PGJ19-2 base. It is specified exclusively for the low beam position on the Tacoma for 2018 and 2021-2023, and it is not interchangeable with the H9 despite both being ECE-standard single-filament bulbs, as they use different base types.
• For 2018 and 2022, the Tacoma high beam uses the H9 while the low beam uses the H11, meaning both positions require ECE-standard bulbs with distinct base types that are not shared between the two positions.
• For 2021 and 2023, the high beam position uses the ANSI-standard 9005 while the low beam uses the ECE-standard H11, meaning the two positions in those years draw from different regulatory standards and use entirely different base configurations.
• The transition from the H6054 sealed beam unit to replaceable halogen bulb types occurred at or before the 1997 model year for the Toyota Tacoma, with 1997 representing the only year in which both sealed beam and halogen capsule configurations are documented within the same model year.