The Oldsmobile Achieva uses a 194NA bulb size for the front side marker and 194 or 24 bulb sizes for the rear side marker. The replacement chart covers vehicle production years spanning 1992 to 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Oldsmobile Achieva front side marker position uses the 194NA bulb across all model years covered, spanning 1992-1998.
The 194NA is a T10 miniature wedge bulb rated at 12V and 3.78W, distinguished by its natural amber glass construction, which produces the amber color required for front side marker applications without relying on a tinted lens.
The 194 bulb, used at the rear side marker position for 1994-1998, shares the same T10 miniature wedge form factor and 12V, 3.78W electrical rating as the 194NA, but lacks the natural amber glass coating.
The T10 wedge base type used by both the 194NA and 194 bulbs is a push-in design that does not use a separate metal base, making it among the more common miniature bulb formats in automotive lighting.
For the 1992-1993 Oldsmobile Achieva, the rear side marker position uses the size 24 bulb rather than the 194 series found in later model years.
The size 24 bulb operates on a BA9s bayonet-style base, which is physically incompatible with the T10 wedge socket used by the 194 and 194NA bulbs, meaning the two types are not interchangeable.
The size 24 bulb is rated at 12V and 2W, a lower wattage than the 3.78W rating of the 194 series, reflecting a different electrical load at the rear side marker circuit in those earlier model years.
All three bulb types listed, the 194NA, 194, and 24, conform to ANSI standards applicable in both the United States and Canada.
The front and rear side marker positions on the 1994-1998 Achieva use bulbs from the same T10 wedge family, but the amber coloring for the front is built into the 194NA glass rather than achieved through the housing, which is a distinction relevant to direct substitution between the two types.