Automotive lighting that promises clear, daylight-style illumination for interior and auxiliary lamps. Enjoy a sharper, more modern look when stepping into or around the car thanks to reliable, high-output LED performance. Is the upgraded brightness and longevity worth fitting across your vehicle, SUMOZO Autobulbs Festoon C5W Led Bulbs?
⚡ At a Glance
- • Light Output: 6500K xenon-white tone, approximately 280 lumens per bulb, powered by six 5730 SMD chipsets
- • Best for: Car owners wanting bright, daylight-style interior and auxiliary illumination
- • Not ideal for: Users who prefer warm white or yellow-tinted incandescent lighting
High-brightness festoon LEDs suit common interior and licence plate applications. Aluminium construction helps dissipate heat and extend life.
Brighter Interior and Exterior Lighting – thanks to 6x5730 SMD chipsets
Six 5730 SMD LEDs are used per bulb to increase light output and provide a consistent xenon-white beam at around 6000–6500K. Rated output of roughly 280 lumens per bulb suits 12V DC vehicle circuits.
Sharper map, dome and licence plate illumination improves visibility and makes small details easier to spot without needing extra lamps.
Longer Service Life – with aluminium body for heat dissipation
An aluminium housing conducts heat away from the LED chips, reducing operating temperature and slowing lumen degradation. Manufacturer claims up to 50 times the lifespan of original incandescent bulbs.
Reduced frequency of bulb replacements and lower power draw translate into less maintenance and longer-term reliability.
Simple Fit and Reliable Operation – thanks to no-polarity design and anti-flicker behaviour
No-polarity electrical design allows insertion either way without damage, while circuitry prevents flicker and avoids common failure modes on 12V systems. User feedback notes plug-and-play fitment and no CANbus errors in many vehicles.
Quick swap installation, immediate full output after fitting, and fewer dashboard errors for a hassle-free upgrade.
✨ The 4 Key Reasons for SUMOZO Autobulbs Festoon C5W Led Bulbs
- Six 5730 SMD LEDs — Deliver consistent high output, producing bright xenon-white illumination
- Aluminium housing — Improves heat management for a markedly longer service life
- No-polarity, anti-flicker design — Enables straightforward installation without flicker or polarity issues
- Pack of four with testing and warranty — Pre-delivery testing plus 12-month warranty for dependable replacement
📋 Technical Details at a Glance
- Type: Festoon C5W LED bulb
- Size/Fit: 39mm (fits 38–40mm sockets)
- Colour Temperature: 6000K–6500K xenon white
- Lumen Output: Approximately 280 lumens per bulb
- Voltage: 12V DC
❓ Frequently Asked Questions
Q: Will these bulbs fit my car's interior lamps?
A: Fitment is for 38–40mm festoon sockets, and they are listed as replacements for common codes such as 6418, DE3425 and DE3423; double-check the original bulb size or the owner's manual before buying.
Q: Are they easy to install and do they cause warning lights?
A: Installation is plug-in style with a no-polarity design and anti-flicker behaviour, and user reviews report no CANbus errors and straightforward, plug-and-play compatibility.
Q: How long can I expect them to last?
A: The aluminium construction supports better heat dissipation, and the manufacturer states the LEDs last up to 50 times longer than original incandescent bulbs, with a 12-month warranty included.
🏆 Our Verdict
Ideal for motorists who want brighter, daylight-style lighting for map, dome, licence plate and cargo areas. High-output 5730 SMD LEDs combined with an aluminium body and anti-flicker, no-polarity electronics deliver reliable, plug-and-play performance. Backed by pre-delivery testing and a 12-month warranty, the bulbs represent strong long-term value through reduced replacements and lower energy use.
