Hyundai Tucson Tail Light Bulb Size

Additional Notes

• The 2357 bulb is the most frequently specified tail light bulb across the Hyundai Tucson lineup, appearing in model years 2010-2020 as well as 2012 and 2013 without condition notes.
• The 2357 is an ANSI-standard dual-filament bulb rated at 12V with a high-intensity filament drawing 26.9W and a low-intensity filament drawing 8W, mounted on a BAY15d bayonet base.
• The 1157 shares the same BAY15d bayonet base and dual-filament design as the 2357 but operates at lower wattages of 21W and 5W, making the two bulbs physically interchangeable in terms of socket fit while differing in output.
• The 2024 Hyundai Tucson uses the 12961, a Philips-designated miniature wedge bulb in the T10 form factor with a W2.1x9.5d base, rated at 12V and 5W, which is a single-filament low-wattage bulb incompatible with the BAY15d sockets used in earlier model years.
• For the 2016-2020 Tucson, the 2357 specification carries a "With Halogen Capsule Headlamps" condition, indicating that the tail light bulb fitment is tied to a specific headlamp configuration on those vehicles.
• The 2014-2015 Tucson specifies the 2357 under a "Without LED Tail Lights" condition, meaning vehicles equipped with LED tail lights on those model years do not use a replaceable incandescent bulb of this type.
• The 1157 is specified for the 2005-2009 Tucson without any conditional notes, indicating a straightforward single-fitment application across those years.
• Because the 12961 uses a wedge-style W2.1x9.5d base and the 1157 and 2357 use a BAY15d bayonet base, bulbs from the 2024 model year are not interchangeable with those from any other year in the Tucson tail light application.