What is a festoon bulb?

A festoon bulb is a type of automotive light bulb that is cylindrical in shape with metal caps on both ends. They are commonly used in interior lighting applications, such as dome lights, map lights, and vanity mirror lights.

How do I install this LED bulb?

Installation is simple: just remove your old bulb and plug this one in. The SMF2 LED bulb is designed to be a direct replacement for any 39mm-size bulb. Refer to your vehicle's service manual for bulb replacement instructions.

What does the warranty cover?

Diode Dynamics offers a three-year replacement warranty on this product. If the bulb fails due to manufacturing defects during the warranty period, it will be replaced free of charge.

Diode Dynamics

Diode Dynamics 39mm SMF2 LED Bulb - Cool - White (Pair)

Name: Diode Dynamics 39mm SMF2 LED Bulb - Cool - White (Pair)
Brand: Diode Dynamics
Price: 12.24 USD
Availability: InStock

$12.24

Modern LED appearance. Direct replacement for factory 39mm festoon bulb. Simple plug and play installation.

Key Features

Direct replacement — fits factory 39mm festoon bulb sockets.
Modern LED appearance — upgrades the factory yellowish incandescent bulb.
Simple installation — plug and play.
Embedded load resistor and implanted diode — for strong reliability.
24 lumens — provides about double the total light compared to your original 39mm-sized bulb.
Cool white 6000K — choose a modern look.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Will this fit your vehicle?

Compatible with 204 vehicles

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Product Details

The 39mm SMF2 LED bulb is a direct replacement for any 39mm-size bulb commonly found in vanity mirror lights in many vehicles. The SMF2 upgrades the factory yellowish incandescent bulb to a more modern LED appearance with increased output.