COB LED Festoon Bulb (C5W/C10W) — High-power COB LED festoon bulb, 6000K white, fits 31/36/39/41mm sockets. It is a bright interior lighting upgrade for cars. It is CANBUS-ready and ships pan-India.
Specifications & Compatibility
| 🏷️ Brand | TecUpdater |
| 🛡️ Heat Shrink | Yes, Aluminum Alloy |
| 📦 Quantity / UOM | 1 Piece |
| ♻️ Return / Exchange | Exchange Only |
| 💡 Bulb Type | Festoon LED (rigid tube with metal end caps) |
| 📏 Length Options | 31 mm, 36 mm, 39 mm, 41 mm |
| 💡 LED Type | COB LED array (18–33 LEDs depending on size) |
| 🔋 Voltage | DC 12 V (some models 12–24 V) |
| ⚡ Power Consumption | ~2.5 W–5 W (C5W–C10W equivalent) |
| 🎨 Color Temperature | ~6000 K (bright white) |
| 🔄 Illumination Angle | 360° full coverage |
| 🔧 Driver | Constant-current or CANBUS-compatible |
| 🏠 Housing | Aluminum or PCB body with heat sink |
| 💧 Ingress Protection | Often IP68 waterproof |
| 🌡️ Operating Temperature | –45 °C to +105 °C |
| ⏳ Life Expectancy | Typically >30,000 hours |
| ✅ Certifications | CE, RoHS (varies by supplier) |
| 🚗 Applications | Dome/map lights, trunk illumination, glove box and courtesy lamps, license plate lights, RV interior lighting, utility/service vehicle compartments |
Upgrade your vehicle’s interior and auxiliary lighting with TecUpdater COB Festoon LED Bulbs, engineered for superior brightness, uniform illumination, and reliable performance. Designed for dome, trunk, map, courtesy, glove box, and license plate lights, these bulbs are an ideal drop-in replacement for cars, trucks, RVs, and boats.
COB LED Festoon Bulb (C5W/C10W) — Overview
Offered in 31mm, 36mm, 39mm, and 41mm lengths, this COB LED Festoon Bulb (C5W/C10W) throws a 360-degree 6000K white beam from its COB LED array for dome, trunk, and glove box lighting. Rated IP68 and built to run past 30,000 hours, this COB LED Festoon Bulb (C5W/C10W) suits interior upgrades in cars, RVs, and utility vehicles.
Looking for a different interior light or festoon option? Check below.
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Key Features
Uniform 360° Brightness
Each bulb uses COB (Chip On Board) LED technology, combining multiple LED chips into a single array for glare-free, even light distribution.
Outperforms traditional halogen or SMD LEDs with smoother illumination and enhanced visibility.
Wide Fit Compatibility
Available in 31mm, 36mm, 39mm, and 41mm lengths for easy replacement across most automotive festoon sockets.
Can be used in interior cabins, trunks, glove boxes, courtesy lamps, license plate lights, and RV compartments.
Energy Efficient & Durable
Low 12 V power draw (2.5 W–5 W) reduces heat stress on vehicle wiring.
Includes CANBUS/IC driver circuitry to prevent flickering or dashboard error codes in modern vehicles.
Rugged construction with aluminum bases and IP68 waterproof ratings ensures reliability in harsh conditions.
Long Lifespan
Designed to withstand temperatures from –45 °C to +105 °C, making them suitable for interior, trunk, or even exterior automotive applications.
High-quality materials and heat-sinking bases prolong operational life.
Easy Plug-and-Play Installation
Direct-fit replacement for existing festoon sockets.
No rewiring or special tools required.
CANBUS-enabled bulbs work instantly in modern vehicles without triggering errors.
Automotive Applications
Dome and map lights
Trunk illumination
Glove box and courtesy lamps
License plate lamps
RV interior lighting
Utility or service vehicle compartments
Why Choose TecUpdater COB Festoon LEDs?
Wide compatibility across four common lengths
Bright, uniform 360° light with COB technology
Energy-efficient, low-heat operation
CANBUS-ready for modern vehicles
Rugged, waterproof construction suitable for demanding environments
These bulbs are sized to fit the four most common festoon lengths (31/36/39/41mm), so one listing covers dome, trunk, and number-plate housings without needing to measure first.
FAQs
This COB LED festoon bulb is covered by a 6 month warranty against manufacturing defects.
This product is covered under an exchange-only policy, so a defective or incorrect bulb can be exchanged by contacting TecUpdater support with your order details.
This listing is for 1 piece, not a pair, so if your fitting has two festoon bulbs, such as both sides of a dome light, you will need to order two units.
No, it is a direct-fit replacement for existing festoon sockets with no rewiring or special tools required, and CANBUS-enabled units work immediately in modern vehicles without triggering errors.
Depending on the length you choose, it draws roughly 2.5W to 5W, corresponding to a C5W to C10W equivalent rating, and runs on a 12V DC supply, with some versions supporting 12V to 24V.
Yes, the applications listed include trunk illumination and license plate lamps in addition to dome and courtesy lights, and the bulb is often IP68 waterproof rated with an operating range of -45 degrees C to +105 degrees C, though this is not marketed for direct mounting inside the engine bay itself.
These four lengths cover the most common festoon bulb housings used for dome, trunk, and license plate lights, so the safest approach is to measure your existing festoon bulb end to end, or check the length marking on it, before ordering.
No, all four length options share the same approximately 6000K bright white output. Only the physical size and LED chip count, which ranges from 18 to 33 LEDs depending on the length, differ between versions.
C5W and C10W are long-standing automotive bulb codes that describe roughly a 5W and 10W incandescent-equivalent light output for small interior and utility lamps. This LED bulb is built to match that output class while actually drawing far less real power.
The bulb uses an aluminum or PCB body with a heat sink and is rated to operate up to 105 degrees C, which is designed to manage heat during extended use, and it carries a rated lifespan of over 30,000 hours.
Satyendra –
Perfect for Baleno Dome Lights yellow halogen replacement. Good.