Saturn LW300 high beam headlight bulbs use 9005 size while low beam headlight bulbs use H11 or 9006 size. The replacement chart covers 2001 to 2003 vehicle production years with 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 LW300 uses three distinct bulb types across its headlight system: the 9005, H11, and 9006, all of which are single-filament halogen bulbs operating at 12 volts.
The 9005 bulb is rated at 65 watts and follows the ANSI standard used in the United States and Canada. It uses a P20d base and serves as the high beam headlight across all three model years (2001-2003).
The 9006 bulb is rated at 55 watts and also follows the ANSI standard. It uses a P22d base and is the low beam headlight for the 2001-2002 model years.
The H11 bulb, also rated at 55 watts, follows the ECE standard used in Europe and worldwide, though it carries US approval as well. It uses a PGJ19-2 base and is the low beam headlight for the 2003 model year only.
Although the 9006 and H11 share the same wattage rating of 55 watts, their base types differ (P22d versus PGJ19-2), making them physically non-interchangeable despite the identical power draw.
The shift from a 9006 to an H11 low beam bulb between the 2002 and 2003 Saturn LW300 represents a base-type change, meaning a 2003 low beam socket is not compatible with the bulb used in the 2001-2002 model years.
The 9005 high beam and the 9006 low beam are both ANSI-standardized bulbs, yet they use different base types (P20d and P22d respectively), which prevents cross-position substitution within the same vehicle.