Nissan Xterra Turn Signal Bulb Size

Additional Notes

• The Nissan Xterra front turn signal uses one of three bulb types across its model years: the 3457NA, the 3357NA, or the 1156NA, depending on the year.
• The 3457NA and 3357NA are both T25 wedge bulbs operating at 12V, but they differ in filament count. The 3457NA is dual-filament rated at 27W/7W, while the 3357NA is single-filament rated at 27W. These two types are not interchangeable despite sharing the same T25 form factor.
• The 1156NA, fitted to the Nissan Xterra front turn signal for 2000-2001, uses a BA15s bayonet base rather than a wedge mount. This base type is physically incompatible with the T25 wedge socket used in later model years.
• The front turn signal for the Nissan Xterra shifted from the 1156NA bayonet-base bulb to the T25 wedge-style 3457NA starting with the 2002 model year, representing a socket type change that requires attention when sourcing a replacement.
• The "NA" suffix on all bulb types listed in these specifications denotes natural amber glass. This coloring is built into the glass envelope itself rather than achieved through a coated or painted lens.
• The front turn signal uses the single-filament 3357NA for the 2007-2009 model years and for 2013, while all surrounding years use the dual-filament 3457NA. These two bulbs share the same T25 wedge base, but installing a single-filament bulb in a socket wired for dual-filament operation may result in loss of one lighting function.
• The rear turn signal for the Nissan Xterra uses either the 3156NA or the 3157NA across all listed model years. Both are T25 wedge bulbs rated at 12V, but the 3157NA is dual-filament at 27W/7W while the 3156NA is single-filament at 27W.
• The rear turn signal transitioned from the dual-filament 3157NA to the single-filament 3156NA between the 2004 and 2005 model years, and the 3156NA remained the specified fitment through 2015.
• All five bulb types across both front and rear turn signal positions conform to ANSI standards applicable in both the United States and Canada.
• The T25 wedge base is the most prevalent socket type across these specifications, appearing in four of the five bulb types listed and covering the majority of model years for both the front and rear turn signal positions.