Toyota Supra front and rear side marker bulbs both utilize a 194 size bulb for optimal illumination. The replacement chart covers vehicle production spanning 1986 to 1998 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 Toyota Supra uses the 194 bulb for both front and rear side marker positions across the 1986-1998 model years.
The 194 is classified as a miniature wedge bulb, designated T10 in the international bulb sizing system, where "T" refers to the tubular shape and "10" indicates the width in eighths of an inch.
The 194 bulb operates at 12 volts with a power draw of 3.78 watts, placing it among the lower-wattage bulbs used in automotive marker lighting applications.
The wedge base design of the T10 format 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 low-current marker and courtesy light applications.
The 194 designation follows ANSI standardization applicable in both the United States and Canada, meaning the bulb specification conforms to a defined interchangeability standard across those markets.
Because the same 194 bulb size is specified for both the front and rear side marker positions on the Toyota Supra, a single bulb type serves both locations without substitution or cross-referencing between positions.