Nissan TITAN XD Turn Signal Bulb Size

Additional Notes

• The Nissan TITAN XD front turn signal position uses two closely related bulb types across its model years: the 7443NA for 2016-2018 and the 7444NA for 2019 and 2023-2024. Both are ANSI-standard dual-filament wedge bulbs in the T20 form factor, rated at 12V with a 21W high filament and 5W low filament, and both feature natural amber glass rather than a clear envelope.
• The natural amber glass construction of the 7443NA and 7444NA bulbs produces a colored output without relying on a tinted lens, which is the defining characteristic of the "NA" designation in both part numbers.
• Although the 7443NA and 7444NA share the same T20 wedge base, voltage rating, and wattage, they are distinct ANSI part numbers and are not confirmed as interchangeable within these specifications.
• The rear turn signal position on the TITAN XD uses T25 dual-filament wedge bulbs throughout all listed model years, with the 3057 fitted on 2016-2019 models and the 3157 fitted on 2021 and 2023-2024 models.
• Both the 3057 and 3157 share the same 12V rating and the same 27W/7W dual-filament output, and both conform to the ANSI standard for the US and Canadian markets.
• Despite their identical wattage ratings and shared T25 form factor, the 3057 and 3157 are separate ANSI designations. The two types differ in their filament current draw characteristics, which affects compatibility with turn signal flasher circuits calibrated to a specific load.
• The rear position uses noticeably higher wattage than the front position across all listed years, with the T25 rear bulbs drawing 27W on the active filament compared to 21W for the T20 front bulbs.
• All bulb types listed for the TITAN XD across both positions conform to ANSI standards applicable in the United States and Canada, indicating standardized base and electrical specifications within those markets.