The Saturn LW200 side marker utilizes 194 and 12961 bulb sizes for the lighting components. Data for the specific bulbs covers the range from 2001 through 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Saturn LW200 uses the 12961 bulb across both its front and rear side marker positions, making it the sole bulb type present in these specifications.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base, rated at 12 volts and 5 watts.
The T10 designation refers to a tubular bulb approximately 10mm wide, and the W2.1x9.5d base describes a wedge-style base where the glass envelope itself acts as the retaining mechanism rather than a metal cap.
At 5 watts, the 12961 is a low-output bulb consistent with side marker applications, which serve as passive visibility indicators rather than primary lighting sources.
The front side marker position on the Saturn LW200 uses the 12961 bulb across the 2001-2003 model years.
The rear side marker position on the Saturn LW200 uses the 12961 bulb for the 2001-2002 model years.
The shared 12961 fitment across both front and rear side marker positions indicates that a single bulb type serves all side marker sockets on the vehicles covered by these specifications.
The W2.1x9.5d wedge base is a standardized international base type, meaning the 12961 is not a proprietary or vehicle-exclusive component and is produced by multiple manufacturers beyond Philips.