Ferrari Mondial 3.2 front and rear side marker bulbs utilize a 158 size bulb configuration. The replacement chart covers 1986 to 1988 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 158 bulb is the sole bulb type specified for the Ferrari Mondial 3.2 across all side marker positions for the 1986-1988 model years.
The 158 is classified as a miniature wedge bulb, corresponding to the T10 form factor, which describes a tubular glass envelope approximately 10mm wide with a wedge-style base that requires no separate socket locking mechanism.
The 158 operates at 12 volts with a 3-watt power draw, placing it in the low-wattage range typical of marker and indicator lighting rather than primary illumination.
The 158 conforms to ANSI standards as recognized in the United States and Canada, meaning its physical and electrical characteristics follow a defined industry specification rather than a proprietary design.
The front and rear side marker positions on the Ferrari Mondial 3.2 share the same 158 bulb specification across all listed model years, indicating direct interchangeability between those positions.