Kia Sephia Back Up Light Bulb Size

The Kia Sephia back up light uses bulb size 1156 and bulb size P21W according to the provided specifications for the vehicle. Data for the bulb sizes covers the range from 1994 to 2001.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1994-2001	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The 1156 is the sole back up light bulb size listed for the Kia Sephia across all model years in the specifications, spanning 1994-2001.
The 1156 is an ANSI-standardized bulb type, meaning its physical and electrical characteristics conform to a defined North American standard recognized in both the United States and Canada.
The 1156 operates on a 12-volt electrical system and draws 21 watts, which is consistent with standard automotive reverse lighting applications.
The 1156 uses a BA15s bayonet base, a single-contact mount where the bulb is inserted and rotated to lock into the socket.
The 1156 is a single-filament bulb, meaning it serves only one lighting function per socket, as opposed to dual-filament types that can serve two functions from a single housing.
The BA15s base designation is specific to single-contact bayonet fittings. A visually similar bulb using a BA15d base, which has two contact pins offset at different heights, is not interchangeable with the 1156 despite sharing the same base width.
The consistent use of the 1156 across all eight model years of the Kia Sephia covered in the specifications indicates no bulb size variation occurred across that production span for this lighting position.