The Ferrari F355 GTS front and rear side marker bulbs both utilize a 194 size bulb for replacement purposes. The replacement chart covers vehicle production spanning 1994 to 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ferrari F355 GTS uses the 194 bulb for both front and rear side markers across the full 1994-1998 production run.
The 194 is a miniature wedge-type bulb, classified under the T10 form factor, which refers to its tubular shape with a wedge base that requires no separate socket pins.
The 194 bulb operates at 12 volts with a power draw of 3.78 watts, placing it in the low-wattage range typical of side marker applications.
The 194 designation follows ANSI standardization, meaning the bulb specification is recognized across the United States and Canada under a uniform technical code.
Because the same 194 bulb is specified for both the front and rear side marker positions on the F355 GTS, a single bulb type serves both locations without substitution.
The T10 wedge base is a widely used automotive format, and bulbs carrying this base type are generally interchangeable by physical fitment, though wattage and voltage ratings must match the original specification to avoid electrical or photometric issues.
The consistent 194 specification across all five model years of the F355 GTS indicates no mid-cycle change was made to the side marker bulb fitment during the vehicle's production period.