Hyundai Santa Fe Turn Signal Bulb Size

Additional Notes

• The 2357NA bulb is the most frequently specified front turn signal bulb across the Hyundai Santa Fe's history, appearing in the 2001-2006 and 2013-2016 model years. It follows the ANSI standard and uses a BAY15d dual-filament design with natural amber glass at 12V and 26.9W/8W output.
• The 1156NA bulb holds the longest continuous run in the rear turn signal position, covering the 2006 and 2010-2016 model years. It is a single-filament BA15s bayonet base bulb with natural amber glass rated at 12V and 21W.
• The 1157 and 1156 bulbs share the same BAY15d and BA15s bayonet base families respectively but differ in filament count. The 1157 is dual-filament while the 1156 is single-filament, reflecting their respective front and rear turn signal roles in earlier Santa Fe model years.
• For the 2017-2018 Hyundai Santa Fe, the front turn signal bulb specification splits into two distinct fitments depending on headlamp type. Vehicles equipped with HID headlamps require the 12496, while those with halogen capsule headlamps require the 2357NA, making headlamp type a critical compatibility factor for those years.
• The PY21W bulb follows the ECE standard rather than the ANSI standard used by most other bulbs in these specifications. It uses a BAU15s offset bayonet base, which is physically incompatible with the BA15s and BAY15d bases found on ANSI-standard bulbs such as the 1156 and 1157 families.
• The 2357 and 1157 bulbs share the same BAY15d base and dual-filament configuration, but the 2357 operates at a higher wattage of 26.9W/8W compared to the 1157 at 21W/5W. Despite this electrical difference, the physical base compatibility between the two is a known interchangeability consideration.
• The 12961 is specified exclusively for the 2023 rear turn signal position. It is a T10 miniature wedge bulb with a W2.1x9.5d base rated at 12V and 5W, a significantly lower wattage than all other turn signal bulbs listed in these specifications.
• The natural amber glass designation on the 2357NA and 1156NA bulbs indicates that the amber color is produced by the glass coating rather than by the lens housing. This is a fitment-relevant distinction, as substituting a clear-glass equivalent in a position designed for a natural amber bulb may affect the color output at the lens.