Saturn Aura high beam headlight bulbs use 9005 size while low beam headlight bulbs use H11 size. The replacement chart covers 2007 to 2009 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Saturn Aura uses the 9005 bulb for high beam headlights across all three model years (2007-2009), and the H11 bulb for low beam headlights across the same span, meaning the vehicle runs a dual-bulb headlight system with separate bulbs for each function.
The 9005 operates under the ANSI standard, which governs bulb specifications in the United States and Canada. It is a single-filament halogen bulb rated at 12V and 65W, fitted with a P20d base.
The H11 operates under the ECE standard, which is the regulatory framework used across Europe and much of the world. It is also approved for use in the United States. The bulb is a single-filament halogen type rated at 12V and 55W, fitted with a PGJ19-2 base.
The 9005 and H11 bulbs carry different base types, P20d and PGJ19-2 respectively, which means the two bulbs are not interchangeable with each other despite both being single-filament 12V halogen units.
The 9005 draws 65W while the H11 draws 55W, reflecting the higher power demand typically associated with high beam output compared to low beam output.
Because the 9005 follows the ANSI standard and the H11 follows the ECE standard, replacement bulbs sourced from different regional markets may carry different certification markings, though both standards are recognized for road use in the United States.