The Kia Sephia uses 9003 and 9004 bulb sizes for both high beam and low beam headlight applications, with these specifications representing the primary bulb options for the model. The replacement chart covers 1994 through 2001 production years and details the corresponding bulb size requirements across the vehicle's generation.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9003 bulb is a dual-filament halogen type that operates at 60 watts on high beam and 55 watts on low beam, using a single bulb to serve both functions within one housing.
The 9004 bulb is also a dual-filament halogen type, rated at 65 watts for high beam and 45 watts for low beam, and shares the same single-bulb, dual-function design as the 9003.
For the Kia Sephia, both the high beam and low beam positions use the same bulb size in every model year listed, meaning one bulb type serves both lighting functions per headlight assembly.
The 1996-2001 Kia Sephia uses the 9003 bulb for both high and low beam headlights.
The 1994-1995 model years use the 9004 bulb for both high and low beam headlights.
The 9003 and 9004 bulbs are not interchangeable despite their shared dual-filament design, as they differ in wattage output and connector configuration.
The 9003 bulb uses an H4-style base, which is a three-pronged connector, while the 9004 uses a different three-pronged connector with a distinct pin arrangement, making physical substitution between the two types incompatible.
A bulb change is required when servicing either the high or low beam on these vehicles, as a single failed bulb affects both beam functions simultaneously.