SEALIGHT 578 LED Interior Bulb Pack of 4 — 41-42mm 6500K Xenon White, CANbus & Ceramic CSP

SEALIGHT 578 LED bulbs are plug-and-play, 41–42mm interior car LEDs that deliver bright 6500K xenon-white light with long-life ceramic CSP chipsets.

Replace dim or yellowing interior bulbs with this 4-pack of SEALIGHT 578 (212-2 / 211-2 compatible) LEDs designed for map, dome, license plate, trunk and courtesy lights. Built with high-temperature ceramic CSP-2525 chipsets and all-aluminum bodies, these bulbs aim to offer stable performance, efficient heat control and CANbus-compatible electronics for a flicker-free fit in many vehicle interiors.

How bright and long-lasting are these SEALIGHT 578 bulbs?

These LEDs produce about 600 lumens each at a crisp 6500K color temperature, giving a cool xenon-white appearance ideal for interior visibility. The CSP-2525 ceramic chipset and quality thermal structure are chosen to help maintain output and color over time.

• Brightness: ~600 LM per bulb
• Color temperature: 6500K xenon white
• Rated life: up to 50,000 hours
• Power draw: 5W per bulb

Will these bulbs fit my car’s interior sockets?

SEALIGHT 578 bulbs use a 1:1 physical size to match many common interior sockets. They are compatible with a range of factory part numbers and bulb types, but you should confirm your existing bulb size or owner’s manual before ordering to ensure fitment.

• Sizes included: 41mm and 42mm lengths (1.59 inch)
• Common interchangeable types: 211-2, 212, 212-2, 214-2, 569, 578
• Also fits: 6411, 6418, 6429, 12844, DE4410 styles
• Sockets: map lights, dome lights, trunk, license plate, dashboard, courtesy lights

How do these LEDs handle heat and vehicle electronics?

The bulbs use CSP encapsulation and an all-aluminum housing to move heat away from the chipset efficiently. They include a temperature-control IC and CANbus-compatible electronics to reduce flicker and avoid many dashboard error codes in modern electrical systems.

• Chipset: CSP-2525 high temperature resistant ceramic
• Heat path: aluminum body plus CSP encapsulation
• Electronics: built-in temperature control IC and CANbus error mitigation
• Result: stable operation at higher operating temperatures

How simple is installation and what should I check first?

Installation is plug-and-play and non-polarized, so bulbs can be inserted without worrying about orientation on most vehicles. However, manufacturing and trim variations exist across makes and models, so verify your original bulb size or owner’s manual before purchase for a guaranteed fit.

• Installation time: about five minutes per bulb
• Polarity: non-polarized (plug-and-play)
• Tip: double-check socket size due to possible trim-specific differences
• Included pack: four bulbs for multiple fixtures

Who this is for: Drivers who want bright, cool-white interior lighting with long-lasting ceramic CSP chipsets—especially those replacing map, dome, trunk or license plate bulbs across many domestic and imported cars. Choose this SEALIGHT 4-pack if you need straightforward, energy-efficient interior upgrades, but verify bulb size for a perfect fit with your vehicle trim.