Toyota Tacoma Daytime Running Light Bulb Size

Additional Notes

• The Toyota Tacoma daytime running light specifications reference three distinct bulb types across the 2009-2023 model years covered: the 7444NA, the 4157NA, and the 5702AK.
• The 7444NA is a dual-filament wedge bulb in the T20 body size, rated at 12V with a 21W high-filament and 5W low-filament output. Its natural amber glass produces the amber color without any applied coating.
• The 4157NA shares the dual-filament wedge construction but uses the larger T25 body size, rated at 12V with a 27W high-filament and 7W low-filament output. It also uses natural amber glass rather than a coating.
• The 5702AK is a Sylvania-designated variant of the ANSI 3157 bulb. It carries the same T25 body size and 12V, 27W/7W electrical ratings as the 4157NA, but achieves its amber output through an applied coating rather than tinted glass.
• Because the T20 and T25 wedge bases are physically different sizes, the 7444NA is not interchangeable with either the 4157NA or the 5702AK, regardless of voltage or wattage considerations.
• The Toyota Tacoma (2021-2023) uses the 7444NA, while the 2018 model year also calls for the same bulb, placing it in a separate fitment group from surrounding years.
• The 4157NA and 5702AK share identical T25 body sizes and electrical ratings, but the difference in amber production method means they are not guaranteed to be interchangeable in all applications without confirming socket and regulatory compatibility.
• Both the 7444NA and 4157NA carry ANSI standard designations recognized in the US and Canada, while the 5702AK is identified by a Sylvania part number referencing the ANSI 3157 base specification.