Oldsmobile Cutlass front side marker bulbs utilize 24, 194, or 194NA bulb sizes, while rear side marker bulbs use 194 or 1895 sizes across multiple generations. The replacement chart documents bulb specifications spanning 1968 through 1999 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is the most widely used type across the Oldsmobile Cutlass side marker specifications, appearing in both front and rear positions across the majority of model years covered.
The 194 is a miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W, and follows the ANSI standard applicable in both the United States and Canada.
The front side markers on the Oldsmobile Cutlass for 1968-1969 use the 194NA bulb, which shares the same T10 wedge form factor and 12V, 3.78W electrical rating as the standard 194 but features natural amber glass rather than a clear envelope.
Because the 194NA produces its amber output through tinted glass rather than a colored lens, substituting a standard 194 in those positions would alter the color output of the marker light.
The front side marker specification shifts from the 194NA (1968-1969) to the standard 194 beginning in 1970, a distinction that carries a direct fitment implication for those earlier model years.
The 1997-1999 front side marker positions use the bulb size 24, a single-filament bulb with a BA9s bayonet base rated at 12V and 2W, which is electrically and physically distinct from the 194 wedge type used in all other front marker years.
The BA9s base of the 24 bulb is a bayonet-style fitting, meaning it is not interchangeable with the wedge-base 194 used in earlier front marker positions despite both operating on a 12V circuit.
The rear side marker for 1968 uses the 1895 bulb, a miniature wedge type in the smaller T5 form factor rated at 12V and 0.9W, which differs in both physical size and wattage from the 194 used in all subsequent rear marker years.
From 1969 onward, the rear side marker standardizes on the 194 bulb across all listed model years through 1999, making it the sole bulb type for that position throughout that span.
All four bulb types listed in the specifications, the 24, 194, 194NA, and 1895, conform to ANSI standards recognized in both the United States and Canada.