Ram ProMaster City Dome Light Bulb Size

Additional Notes

• The Ram ProMaster City uses the 6461 bulb for its dome light across all model years from 2015 to 2021.
• The 6461 is classified as a festoon bulb, a cylindrical lamp type that mounts by pressing its end caps into spring clips rather than inserting into a socket.
• The bulb measures 36mm in length, which is a standard festoon size also found in many European and Asian vehicles, though fitment depends on the specific clip spacing of each application.
• The 6461 uses an SV8.5 base, a designation that refers to the end cap width of 8.5mm, which must match the receiving clips in the fixture for proper installation.
• The bulb operates at 12 volts and draws 5 watts, placing it in the low-wattage category typical of interior courtesy lighting.
• The 6461 designation follows the ANSI standardization system used in the United States and Canada, meaning bulbs sold under this number from different manufacturers share the same electrical and physical specifications.
• Because festoon bulbs of similar length can carry different base widths, a 36mm festoon with a base other than SV8.5 would not be a direct replacement for the 6461 in this application.