Toyota RAV4 Prime Fog Light Bulb Size

Additional Notes

• The Toyota RAV4 Prime uses the H16 bulb type for the front fog light position across the 2021-2024 model years.
• The H16 is a single-filament halogen bulb, meaning it serves one lighting function only and contains no secondary filament for an alternate mode such as high or low beam switching.
• H16 bulbs operate at 12 volts and draw 19 watts, placing them at a relatively low wattage compared to many other halogen fog light bulbs, which commonly range from 35 to 55 watts.
• The H16 carries a PGJ19-3 base designation, which is a proprietary bayonet-style base that physically prevents substitution with bulbs using different base types, even when voltage and wattage ratings are otherwise similar.
• The H16 conforms to ECE standards, a regulatory framework recognized across Europe and many other markets worldwide, governing output, beam pattern, and construction requirements.
• Because the PGJ19-3 base is specific to the H16 and not shared with closely related types such as the H11 or H8, direct physical interchangeability with those bulbs is not possible without modification.