The Oldsmobile Custom Cruiser uses front side marker bulbs in sizes 24, 194NA, and 194, while rear side marker bulbs measure 194 and 168 in size. The replacement chart covers vehicle production spanning 1971 to 1992 with corresponding bulb specifications.
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 Custom Cruiser side marker specifications, appearing in both front and rear positions across the majority of model years covered.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, conforming to ANSI standards for the US and Canadian markets.
The 168 bulb shares the same T10 miniature wedge form factor as the 194 but operates at a higher wattage of 4.9W at 12V, making the two bulbs physically similar yet electrically distinct.
The front side marker on the 1990 Oldsmobile Custom Cruiser uses the 194NA, a T10 miniature wedge bulb with natural amber glass, rated at 12V and 3.78W. The amber coloring is built into the glass rather than the housing.
Because the 194NA and the standard 194 share the same T10 wedge base and identical voltage and wattage ratings, the distinction between them lies solely in the glass tint, which affects the emitted light color.
The front side marker for 1991-1992 uses the 24 bulb, a single-filament type with a BA9s bayonet base rated at 12V and 2W. This base type differs from the wedge base used in all other side marker positions on the Custom Cruiser.
The BA9s base of the 24 bulb is not interchangeable with the T10 wedge base of the 194, 194NA, or 168 bulbs, as the mounting and contact configurations are mechanically incompatible.
The rear side marker on the 1977 Custom Cruiser uses the 168 bulb rather than the 194 found in surrounding model years, indicating a position-specific fitment for that year.
Front side marker bulbs for 1971-1989 on the Custom Cruiser all use the 194, representing an uninterrupted run of the same T10 wedge specification across that span.
Rear side marker fitment for 1990-1992 uses the 194, consistent with the T10 wedge standard also applied to most other rear side marker years on the Custom Cruiser.