The Chevrolet Prizm side marker requires a 194 bulb size for proper installation and function within the lighting assembly. Data for the specified component covers the range from 1998 to 1999.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chevrolet Prizm uses the 194 bulb for the front side marker position across the 1998-2002 model years.
The 194 is an ANSI-standardized miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W.
The rear side marker position across the same 1998-2002 span takes the 168 bulb, a distinct size from the front.
The 168 is also an ANSI-standardized T10 miniature wedge bulb, rated at 12V but at a higher wattage of 4.9W.
Although both the 194 and 168 share the T10 wedge base, their wattage ratings differ, and the two are not interchangeable between front and rear positions on the Prizm.
Both bulb types carry ANSI standardization applicable to the US and Canadian markets.
The T10 wedge base is a common automotive format in which the bulb's glass envelope itself acts as the contact point, requiring no separate metal base or pins.
The wattage difference between the 194 and 168 reflects a difference in filament resistance, which affects light output even though both operate on a 12V circuit.