Hyundai Veloster Tail Light Bulb Size

Additional Notes

• The Hyundai Veloster tail light specifications cover model years 2012-2021 and reference two distinct bulb types: the P21/5W and the 2357, both of which are dual-filament bulbs sharing the BAY15d bayonet base configuration.
• The BAY15d base is an offset dual-contact bayonet fitting, where the two filaments serve separate functions, typically stop and tail lighting, within a single bulb housing.
• The 2357 follows the ANSI standard used in the United States and Canada, operating at 12V with a power draw of 26.9W on the high filament and 8W on the low filament.
• The P21/5W follows the ECE standard used in Europe and worldwide markets, operating at 12V with a power draw of 21W on the high filament and 5W on the low filament.
• Although both bulb types share the BAY15d base, the 2357 draws noticeably more wattage than the P21/5W, making them non-interchangeable despite the physical base compatibility.
• The 2357 is a brighter variant of the 1157 bulb; while the 1157 is sometimes treated as a substitute in general contexts, the Veloster specifications reference the 2357 specifically.
• For the Hyundai Veloster, the P21/5W fitment applies to the 2019-2021 model years under the projector headlamp configuration, while the 2357 applies to the 2012-2017 model years, with the 2013-2017 entries explicitly noting the non-projector headlamp configuration as the condition.
• The headlamp type on the vehicle determines which tail light bulb size is specified, making it a critical factor in confirming the correct fitment before replacement.