Toyota 4Runner Courtesy Bulb Size

Additional Notes

• The Toyota 4Runner uses the 168 bulb for courtesy lighting across the 2010-2024 model years, making it the most frequently specified bulb in these specifications. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 4.9W.
• The 194 bulb shares the same T10 wedge form factor as the 168 but draws less power at 3.78W versus 4.9W. Despite this physical similarity, the two are not the same specification, and the Toyota 4Runner (2003-2009) is listed with the 194 rather than the 168.
• Because the 168 and 194 share the T10 wedge base, they are physically interchangeable in many sockets, though their wattage ratings differ. The specifications assign each to distinct model year ranges, reflecting that they are not treated as equivalent replacements in this application.
• Festoon-style bulbs appear across several earlier model years. The DE3021, DE3022, and DE3175 are all ANSI-standard festoon bulbs with a 31mm length and end-cap contacts, operating at 12V.
• The 1995 Toyota 4Runner is the only model year in these specifications assigned the DE3022 bulb. All other festoon years using a 31mm bulb are listed with either DE3021 or DE3175, making DE3022 a year-specific fitment in this dataset.
• The DE3175 is listed exclusively for the 1992 model year. Although it shares the same 31mm length and end-cap contact construction as the DE3021 and DE3022, it carries a distinct ANSI designation and is not listed as interchangeable with them in these specifications.
• The 6428 bulb is a festoon type with a 36mm length and an SV8.5 base, rated at 12V and 5W. Its longer body and different base type distinguish it physically from the 31mm festoon bulbs used in other years. It is specified for the 1986-1987 and 1991 model years.
• The 13050 is identified as an OEM/Wagner part number rather than an ANSI-standard designation. It is a 12V halogen bulb for a specialty application and is listed for the 1985, 1988, 1990, and 1993 model years.
• The courtesy bulb specifications for the Toyota 4Runner span multiple distinct bulb families, including T10 wedge, 31mm festoon, 36mm festoon, and specialty halogen types, indicating that socket and housing configurations varied across generation changes.
• All bulbs listed across these specifications operate at 12V, consistent with standard automotive electrical systems.