LED Festoon Dome Light Bulbs – 12‑Chip COB Crystal White, 4

Questions and answers
LED Festoon Dome Light Bulbs – 12‑Chip COB Crystal White, 4
About this itemAll characteristics
TypeAutomotive Lighting
LED typeCOB (Chip on Board)
Chip count12 per bulb
VoltageDC 12V
Socket typeFestoon C5W
Available lengths31 / 36 / 39 / 42 mm
Emitting Color: Crystal blue 31mm
From the seller

Transform your car's interior with bright, efficient LED festoon lighting. The 12‑chip COB array delivers brilliant white light that’s leagues ahead of dim factory bulbs, installs in seconds, and…

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Description

Transform your car's interior with bright, efficient LED festoon lighting. The 12‑chip COB array delivers brilliant white light that’s leagues ahead of dim factory bulbs, installs in seconds, and…

12-chip COB technology delivers crystal white light brighter than halogen bulbs

Solves
  • dim factory interior lighting
  • short bulb lifespan
  • excessive power consumption

Interior LED Lighting That Actually Works

Replace dim factory festoon bulbs with brilliant 12-chip COB modules. Instant brightness, crisp white light, and a fit that drops right in.

Three Reasons to Upgrade

  • 12‑Chip COB Array

    Twelve densely packed chips on one board emit a powerful, uniform beam that’s noticeably whiter and wider than a halogen.

  • Four Precise Sizes

    Choose 31, 36, 39, or 42 mm. Each matches a common dome, map, or reading light socket without adapters.

  • Push‑in Simplicity

    No wiring, no tools. Slide the old bulb out, press the new COB in. The metal contacts lock securely.

Upgraded Lighting Performance

  • 12COBLEDs Per Bulb
  • 4Length Options
  • ~50%Less Energy Use
  • 3xLonger Than Halogen

Install Your Festoon LED in Minutes

  1. 1
    Turn off the interior lights

    Make sure the dome or map light is switched off and the car isn’t in accessory mode – you don’t want a short while handling the bulb.

  2. 2
    Remove the old bulb

    Press the spring‑loaded metal clips to release the festoon. If it’s stuck, a gentle side‑to‑side wiggle frees it without breaking the housing.

  3. 3
    Push in the new COB bulb

    Align the metal ends with the socket clips and press firmly until it snaps into place. No need to worry about polarity – COB modules work either way.

  4. 4
    Test and enjoy

    Switch the light on. You should see an instant flood of crisp white light. If it doesn’t light up, flip the bulb 180° and try again.

What You’ll Receive

  • COB LED Festoon Bulb×1

    Selected size and color variant

From Dim to Dramatic

A car interior map light with a yellowish dim halogen glow, hard to read documents

The Dim Reality

Standard festoon bulbs cast a weak, yellowish pool that leaves you squinting at maps or digging in the dark. They burn out quickly and drain more power than they should.

The COB Upgrade

Pop out the old bulb. Push in a 12-chip COB module. Instantly, your cabin is bathed in a uniform, daylight-white glow that reaches every corner.

Clear, Crisp, and Confident

No more squinting. No more guessing. Every time you open the door or reach for a map light, you’ll see exactly what you need, exactly when you need it.

Pick the Right Length

31mm36mm39mm42mm
Total Length (mm)31363942

Measure from metal cap to metal cap. Most passenger cars use 31mm or 39mm; larger trucks and SUVs often use 42mm.

Why This LED Wins

This COB LEDStandard Halogen
BrightnessBright, uniform whiteDim yellowish pool
Lifespan~30,000 hours~1,000 hours
Energy use~50% lessStandard draw
HeatCool runningGets hot quickly
Cost over 5 yearsOne bulb3-4 replacements
earrings sterling silver

Characteristics

Main
CategoryAutomotive Lighting
Emitting Color8 options
Details
LED typeCOB (Chip on Board)
Chip count12 per bulb
VoltageDC 12V
Socket typeFestoon C5W
Available lengths31 / 36 / 39 / 42 mm
Color temperatureCrystal White ≈6000K
Lens materialPolycarbonate (PC)
ContactsChrome‑plated brass

Reviews

Questions and answers

Will these fit my car?
w
Wanelo · seller

Probably. Festoon bulbs are used in dome, map, trunk, and reading lights across most vehicles. Measure the length of your current bulb (metal tip to tip) – if it’s 31, 36, 39, or 42 mm, one of these will drop right in.

How much brighter are they really?
w
Wanelo · seller

Noticeably brighter and whiter. The 12‑chip COB produces a clean daylight spectrum that makes old halogen bulbs look yellow and weak by comparison.

Do I need any tools or adapters?
w
Wanelo · seller

No. The contacts are the same as standard festoon bulbs. Just pull out the old one, push in the LED, and you’re done. If the fit is a bit snug, a gentle squeeze of the metal clips helps.

Won’t LEDs get too hot?
w
Wanelo · seller

COB technology runs significantly cooler than halogen. The metal contacts help dissipate what little heat is produced, so the housing never gets dangerously hot.

Are they worth the cost compared to cheap bulbs?
w
Wanelo · seller

Consider this: you’ll replace a cheap halogen bulb two or three times in the period one of these LEDs lasts. They also use about half the power, which puts less strain on your battery. Over a couple of years, you save money and never get stuck with a dead dome light.

What if my car has CANbus or dimming?
w
Wanelo · seller

These are standard non‑polarity bulbs without built‑in resistors. In most cars, they work perfectly. If your vehicle uses advanced bulb‑out detection or pulse‑width dimming, test one first – the steady light output may flicker slightly on some systems.

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LED Festoon Dome Light Bulbs – 12‑Chip COB Crystal White, 4
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