Kia Sportage Tail Light Bulb Size

Additional Notes

• The Kia Sportage tail light specifications reference three distinct bulb types across its model years: the 921, 2357, and 1157, each serving the same tail light function but with differing electrical and physical characteristics.
• The 2357 bulb is the most frequently specified type in these records, covering the Kia Sportage across 2005-2019, with the exception of the 2014-2019 entries, which carry a conditional note restricting fitment to vehicles equipped with halogen capsule headlamps.
• The 2357 is a dual-filament bulb rated at 12V with a high-filament draw of 26.9W and a low-filament draw of 8W, mounted on a BAY15d bayonet base. Its dual-filament design allows it to serve both brake and running light functions within a single housing.
• The 1157 shares the same BAY15d bayonet base as the 2357 and is also a dual-filament type, but operates at lower wattages of 21W and 5W respectively. Despite the shared base, the two bulbs are not electrically identical, and the 2357 is the brighter of the two.
• The 1157 is specified for the Kia Sportage across 1995-2002, reflecting its use in earlier production years of the model.
• The 921 is a single-filament wedge-type bulb in the T15 form factor, rated at 12V and 16W. Its wedge base design differs fundamentally from the BAY15d bayonet base used by both the 1157 and 2357, making it physically incompatible with sockets designed for those types.
• The 921 is specified exclusively for the 2023 Kia Sportage, representing a departure from the bayonet-base bulbs used across earlier model years.
• The halogen capsule headlamp condition noted for 2014-2019 entries indicates that the 2357 tail light fitment is tied to a specific headlamp configuration, meaning vehicles from those years with a different headlamp setup may not share the same tail light bulb specification.