Kia Sephia front and rear side marker bulbs utilize 2357NA or 1157 bulb sizes for the front position and 168 bulb size for the rear position. The replacement chart contains bulb size specifications across vehicle production years from 1994 to 2001.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Kia Sephia front side marker uses two distinct bulb types depending on the model year. The 1994-1997 model years specify the 1157 bulb, while the 1998-2001 model years specify the 2357NA bulb.
The rear side marker position uses the 168 bulb across all model years from 1994-2001, making it the only specification that remained unchanged throughout the entire production run covered by these data.
The 2357NA is a dual-filament bulb rated at 12V with a high-filament draw of 26.9W and a low-filament draw of 8W. It features a BAY15d bayonet base and natural amber glass, which produces an amber color output without the need for a tinted lens or housing.
The 1157 is also a dual-filament bulb with a BAY15d bayonet base, rated at 12V with filament draws of 21W and 5W. Its clear glass construction differs from the 2357NA, which has natural amber glass built into the envelope.
The 2357NA and 1157 share the same BAY15d bayonet base, which is a double-contact offset-pin base. Despite this physical similarity, the two bulbs are not interchangeable for the Kia Sephia front side marker position, as the specified bulb type changes between the 1994-1997 and 1998-2001 generations.
The 168 is a single-filament miniature wedge bulb of the T10 type, rated at 12V and 4.9W. Its wedge base design differs entirely from the BAY15d bayonet base used by both front side marker bulbs, making cross-position substitution physically incompatible.
The wattage difference between the front and rear side marker bulbs is substantial. The front position draws between 8W and 26.9W depending on filament, while the rear position draws only 4.9W, reflecting the lower output requirements of the rear side marker function.
All three bulb types specified for the Kia Sephia side markers conform to ANSI standards applicable in both the United States and Canada, indicating standardized electrical and photometric performance across those markets.