LASFIT 31mm Festoon LED Bulbs for Interior Lights — 6000K Xenon White, Canbus Error-Free (Pack of 4)

These LASFIT DE3022 31mm festoon LED bulbs are bright, canbus-compatible replacements for interior, dome, trunk, glove box and vanity lights, offering crisp 6000K xenon-white illumination without dashboard error codes.

If you want a direct, plug-and-play upgrade from halogen festoon bulbs, the LASFIT DE3022 delivers improved brightness, cooler color temperature and a built-in resistor to prevent bulb-out warnings on many modern vehicles. Each pack contains four 31mm (1.22 inch) bulbs rated at about 400 lumens per bulb (640 lm per pair when measured as pairs), designed specifically to replace common OEM codes such as DE3175, DE3021, 6428 and 6430. These bulbs use high-power 3030 SMD chips and an aluminum heatsink to manage temperature and maintain consistent light output.

How much brighter and whiter is this LED compared to halogen festoons?

The LASFIT 31mm festoon LEDs are significantly brighter and have a clean xenon-white 6000K color that improves interior visibility and creates a modern look. They use multiple 3030 SMD chips to boost lumen output while maintaining even light distribution.

• About 300% brighter than typical halogen festoon bulbs.
• Approximately 400 lumens per bulb (640 lm per pair reported).
• 6000K color for crisp, daylight-like white light.
• Four bulbs included to cover multiple interior fixtures.

Will these bulbs trigger dashboard bulb-out errors on my car?

Many newer vehicles detect low-resistance LED loads and show bulb warnings; the LASFIT DE3022 bulbs include built-in resistors to address most of those detection issues. This design helps prevent common symptoms like warning messages or hyper-flashing without requiring additional wiring or external resistors.

• Integrated canbus-compatible resistor to reduce false error codes.
• Plug-and-play replacement for DE3175, DE3021, and similar festoons.
• No extra harness or decoder required for most vehicles.
• Still recommended to test in your model before final installation.

How do I ensure these are the correct bulbs for my application?

Measure the length of your current festoon bulb to confirm a 30mm or 31mm fit, and check the OEM bulb codes that your vehicle uses. The LASFIT DE3022 is intended for interior fixtures like dome lights, map lights, trunk and glove box lights where a 31mm festoon is specified.

• Measure existing bulb length — must be approximately 31mm (1.22 inch).
• Compatible with part numbers: DE3175, DE3021, 3022, 6428, 6430, and similar.
• Fits dome, map, courtesy, trunk, glove box and vanity mirror lights.
• Ideal for boats and marine interior fixtures with matching bases.

How durable and cool-running are these LEDs?

LASFIT uses an aluminum heat-dissipation design to keep the LEDs running reliably and to limit thermal stress on the 3030 SMD chips. Proper heat management helps maintain brightness and lifespan compared with uncontrolled designs.

• Aluminum heatsink for efficient thermal management.
• High-power 3030 SMD chips for stable light output.
• Simple installation reduces handling risk — power off before replacing bulbs.

Who is this for? The LASFIT DE3022 31mm festoon LED pack is aimed at vehicle owners who want a straightforward interior lighting upgrade: people replacing dim or yellowed halogen festoons, drivers seeking a modern white interior look, and DIYers who prefer plug-and-play, canbus-friendly bulbs without adding extra wiring. If you need a compact, bright, and mostly error-free festoon replacement for dome, map, trunk or vanity lights, these LASFIT LEDs are a practical, low-effort option.