Toyota Camry Dome Light Bulb Size

Additional Notes

• The DE3175 is the dominant dome light bulb type across the Toyota Camry specifications, appearing in the vast majority of model years from 1988 through 2026.
• All three bulb types listed, the DE3175, 578, and DE3022, are festoon-style bulbs. Festoon bulbs are cylindrical in form and make electrical contact through metal caps at each end rather than through a base socket.
• The DE3175 and DE3022 both share a 31mm length and operate at 12V, while the 578 is a longer unit at 41mm and is rated at 12V and 12W.
• Because the 578 is 41mm long compared to the 31mm length of the DE3175 and DE3022, these bulb types are not physically interchangeable despite sharing the same festoon contact style.
• The Toyota Camry (2003, 2005-2006) takes the 578 bulb, which differs in length from the DE3175 used in surrounding model years, indicating a fitment-specific requirement for those years.
• The 1996 Toyota Camry uses the DE3022, a 31mm festoon bulb that shares its physical length with the DE3175 but carries a distinct ANSI designation, and substitution between the two warrants verification of electrical compatibility before use.
• All three bulb types conform to ANSI standards applicable in the United States and Canada, placing them within a standardized North American automotive lighting classification system.
• The 2004 Camry uses the DE3175, while the immediately adjacent years of 2003 and 2005 use the 578, reflecting year-specific fitment requirements that do not follow a continuous pattern across that period.