Cottonbell 578 LED Festoon Bulbs RGB 16 Colors with Remote – 4-Pack (41mm/42mm)

Colorful interior lighting for your vehicle

Transform your car cabin with Cottonbell 578 LED Festoon Bulbs. This four-bulb RGB set offers 16 colors and remote-controlled adjustments, letting you tailor the ambiance to the moment—subtle white light for practicality or bold hues for mood and style.

Built for everyday use, these bulbs are designed for easy installation and reliable performance. Each bulb is a compact 42 mm length and runs on 12V DC with a modest 2.2W draw per bulb. An aluminum body helps dissipate heat, keeping temperatures comfortable and supporting longer life in typical driving conditions.

Easy color control and dynamic effects

• 16 RGB colors plus four dynamic effects: flash, strobe, fade, and smooth transitions.
• Brightness adjustable and color changes accessible with the included remote control.
• Remote control enables quick, fuss-free setup from the driver’s seat or passenger side.

Compatibility and fit

• 12V DC operation with universal fit for many vehicle interiors.
• Ideal for interior lights, dome lights, map lights, LED reading lamps, dash lights, side door courtesy lights, glove box lights, trunk/cargo lights, and instrument lamp doors.
• 14–42mm range considerations are common across many cars, with 41mm/42mm fittings referenced for compatibility.

Durability and warranty

• Aluminum body design promotes heat dissipation and cooler operation.
• High-power 5050 LED chipset delivers bright, even illumination with low power use.
• Long life up to 10,000 hours and a one-year warranty with responsive support.

Whether you’re aiming for a calm ambient glow during daily drives or a vibrant lighting accent for weekend cruising, Cottonbell’s 578 RGB kits offer flexible options without requiring permanent changes to your vehicle.