Honda Prelude front and rear side marker bulbs both utilize a 168 bulb size across all configurations. The replacement chart covers vehicle production spanning 1979 to 2001.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Prelude uses the 168 bulb for both front and rear side marker positions across the 1979-2001 model years.
The 168 is classified as a miniature wedge bulb, designated T10 in the international bulb sizing system, which refers to its tubular shape with a width of 10 thirty-seconds of an inch.
The 168 bulb operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of side marker and courtesy lighting applications.
The wedge base design of the 168 means the bulb is held in its socket by the tension of the base contacts rather than by a bayonet or screw mechanism, which is a common trait in small automotive marker bulbs.
The 168 carries an ANSI standard designation, indicating it conforms to specifications recognized in both the United States and Canada.
Because the Honda Prelude uses the same 168 bulb in both the front and rear side marker positions, a single bulb type services all four side marker housings on the vehicle.
The T10 wedge form factor is shared by several bulb numbers in the miniature wedge family, meaning physical fitment alone does not confirm electrical compatibility with the 168 specification.