The Oldsmobile 98 side marker requires bulb size 194 or 3057 depending on the specific application. Data for the provided specifications covers the range from 1995 to 1996.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Oldsmobile 98 uses the 194 bulb as the dominant side marker fitment across both front and rear positions, spanning model years 1968-1996 with only isolated exceptions.
The 194 is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12 volts and 3.78 watts, recognized under both US and Canadian standards.
The 194NA variant shares the same T10 wedge form factor, voltage, and wattage as the standard 194, but its glass envelope is natural amber rather than clear.
The Oldsmobile 98 front side marker for 1969 and 1989 specifies the 194NA, meaning those model years require the natural amber glass version rather than the clear 194.
Because the 194 and 194NA are physically identical in form factor and electrical ratings, the amber tint in the 194NA is integral to the bulb itself rather than supplied by a colored lens alone in those specified years.
The 168 bulb is also a T10 miniature wedge type operating at 12 volts, but it draws 4.9 watts, making it a higher-wattage variant compared to the 194 and 194NA.
The Oldsmobile 98 rear side marker for 1977 specifies the 168 bulb, setting that model year apart from all other listed rear side marker years, which use the 194.
Substituting a 168 for a 194 in positions specified for the lower-wattage bulb introduces a mismatch in power draw, which can affect socket and circuit compatibility despite the shared T10 physical format.
The front side marker position carries the 194NA designation only for 1969 and 1989, so using a standard clear 194 in those years would alter the intended amber output of the marker light.
All three bulb types listed in these specifications, the 194, 194NA, and 168, conform to ANSI standards recognized in both the United States and Canada.