Toyota Tacoma Parking Light Bulb Size

Additional Notes

• The 4157NA is the most frequently specified bulb across the Toyota Tacoma front parking light positions, appearing across model years 2002-2010 and 2012-2015, as well as several other years in the dataset. It is a dual-filament T25 wedge bulb rated at 12V with a high/low filament draw of 27W and 7W respectively, featuring natural amber glass to produce the required amber output without a separate lens filter.
• The "NA" suffix present on the 2357NA, 7444NA, and 4157NA designations indicates natural amber glass construction, meaning the amber color is produced by the glass envelope itself rather than a coating applied over clear glass.
• The 5702AK is a Sylvania-specific part number rather than a universal ANSI designation. It corresponds to a coated amber variant of the ANSI 3157 bulb, sharing the same T25 wedge form and 27W/7W dual-filament ratings as the 4157NA, though the amber effect is achieved through a coating rather than tinted glass.
• The 2357NA uses a BAY15d bayonet base, which physically distinguishes it from the wedge-base bulbs also specified for the Tacoma. The BAY15d base is not interchangeable with T20 or T25 wedge sockets, making socket type a critical factor in fitment for the 2023 and 2021 model years where this bulb appears.
• The 7444NA is a T20 wedge bulb rated at 21W/5W, which differs in both physical size and wattage from the T25-based 4157NA and 5702AK. The T20 and T25 wedge bases are not interchangeable, and the lower wattage of the 7444NA means it is not a direct substitute for the higher-draw T25 variants.
• The 168 bulb, specified for the Toyota Tacoma across model years 1995-2000, is a single-filament T10 miniature wedge bulb rated at 12V and 4.9W. Its single-filament construction and significantly lower wattage distinguish it from all other bulb types in these specifications, and it is not interchangeable with any of the dual-filament bulbs listed.
• The 2022 model year specifies the 7444NA while the 2021 and 2023 model years specify the 2357NA, indicating that adjacent model years of the Toyota Tacoma do not necessarily share the same front parking light bulb type or base configuration.
• The 2018 model year appears with two different bulb specifications within the dataset, listing both the 2357NA and the 7444NA. These two bulbs differ in base type, with the 2357NA using a BAY15d bayonet base and the 7444NA using a T20 wedge base, indicating a fitment distinction likely tied to different trim or build configurations for that year.