The Saturn Ion high beam and low beam headlight bulbs both utilize a 9007 bulb size. The replacement chart covers vehicle production years spanning 2003 to 2007.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Saturn Ion uses the 9007 bulb for both high beam and low beam headlights across all model years from 2003-2007.
The 9007 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to serve both the high beam and low beam functions within one housing.
The 9007 operates on a 12-volt electrical system and draws 65 watts on the high beam filament and 55 watts on the low beam filament.
The 9007 uses a PX29t base, which is a specific connector type that determines physical fitment into the headlight socket and is not interchangeable with other base configurations.
The 9007 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of performance and construction specifications.
Because the Saturn Ion relies on a single dual-filament bulb rather than separate bulbs for each function, a failure of the 9007 bulb affects both high and low beam output simultaneously.