Pontiac LeMans front and rear side marker bulbs utilize 194, 194NA, 1895, and 1893 bulb sizes depending on location and model year. The replacement chart covers 1968 to 1981 vehicle production years with corresponding bulb size 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 Pontiac LeMans side marker specifications, appearing in both front and rear positions across the majority of model years covered.
The 194 is an ANSI-standard miniature wedge bulb in a T10 form factor, rated at 12V and 3.78W, and is 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 features natural amber-tinted glass rather than clear glass.
The Pontiac LeMans front side marker for 1969-1970 uses the 194NA, meaning those positions require the amber-glass version rather than the clear 194 used in later years.
Front side marker fitment shifts from the 194NA to the standard clear 194 starting with the 1971 model year, and that specification holds through 1981.
The rear side marker for 1971-1981 uses the 194, while the 1969 model year uses the 1895, a T5 miniature wedge rated at 12V and 0.9W, making it a lower-wattage bulb in a smaller form factor than the 194.
The 1968 Pontiac LeMans rear side marker uses the 1893, also a T5 miniature wedge but rated at 2W, distinguishing it from the 1895 used in 1969 despite sharing the same T10 form factor designation.
The T5 and T10 designations refer to the tubular bulb body width in eighths of an inch, meaning T5 and T10 bulbs are physically different sizes and are not interchangeable with one another.
Because the 194 and 194NA share identical electrical ratings and the same T10 wedge base, the physical fitment is the same, though the amber glass of the 194NA affects the color output of the light.
The 1895 and 1893 are both T5 wedge bulbs operating at 12V, but their wattage differs, which reflects a difference in filament design and light output between the two types.