Kia Stinger front turn signal bulbs use 2357NA size while rear turn signal bulbs use PY21W or 1157NA sizes. The chart contains bulb size specifications across the 2018 to 2023 production range for replacement purposes.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Kia Stinger front turn signal position uses the 2357NA bulb across the 2018-2020 model years, exclusively in vehicles equipped with halogen capsule headlamps.
The 2357NA is an ANSI-standard dual-filament bulb rated at 12V with a high filament draw of 26.9W and a low filament draw of 8W, fitted with a BAY15d bayonet base and natural amber glass.
The rear turn signal position on the 2018-2020 Kia Stinger with halogen capsule headlamps uses the 1157NA bulb, which shares the same BAY15d bayonet base as the 2357NA but operates at lower wattages of 21W and 5W across its two filaments.
Both the 2357NA and 1157NA are ANSI-standard bulbs intended for the US and Canadian markets, and both carry natural amber glass rather than a clear envelope, which produces the amber signal color without relying on a tinted lens.
Although the 2357NA and 1157NA share the BAY15d base, their filament wattages differ, and the two types are not interchangeable without affecting light output.
The 2022-2023 rear turn signal position uses the PY21W, an ECE-standard single-filament amber bulb rated at 12V and 21W with a BAU15s bayonet base.
The BAU15s base of the PY21W is offset at a different angle than the BAY15d base used by the 1157NA and 2357NA, making the PY21W physically incompatible with sockets designed for those ANSI bulbs.
The PY21W is a single-filament bulb, meaning it serves only one lighting function per socket, whereas the dual-filament 1157NA and 2357NA can serve two functions from a single socket.