Volvo C30 Dome Light Bulb Size

Additional Notes

• The 6411 bulb is the sole dome light bulb size listed across all model years of the Volvo C30 covered in these specifications, spanning 2008-2013.
• The 6411 is a festoon-type bulb, meaning it is cylindrical in shape and held in place by spring-loaded end caps rather than a socket with a plug-in base.
• The 6411 carries the SV8.5 base designation, which refers to the 8.5mm-wide metal end caps on each side of the festoon body that make electrical contact with the fixture.
• The bulb operates at 12 volts and draws 5 watts, which is consistent with low-current interior lighting applications in passenger vehicles.
• The 6411 has a 36mm body length, a standard festoon size that is shared with several other bulb types, though not all 36mm festoon bulbs share the same base or wattage rating.
• The 6411 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning its physical and electrical specifications conform to a defined industry standard rather than being proprietary.
• For 2008-2013 model years, the 6411 is designated specifically as a courtesy light bulb in the Volvo C30, a term referring to interior lights that illuminate the cabin when a door is opened.
• Because festoon bulbs rely on physical length and end cap width for fitment, substituting a bulb with a different length or base width risks poor contact or failure to seat correctly in the fixture.