What size are these bulbs?

These LED replacement bulbs are 28mm in size, which is a common festoon bulb size for vanity mirror lights in many vehicles. Please check your vehicle's manual to confirm the correct bulb size for your application.

How bright are these bulbs?

The SMF1 LED bulbs have a measured output of 16 lumens. This provides similar light output to your original 28mm-sized bulb. If you are looking for increased output, Diode Dynamics recommends the SMF2 option.

What kind of warranty do these bulbs have?

These Diode Dynamics SMF1 LED bulbs are backed by a three-year replacement warranty. This covers any failures or flickering that may occur during normal use.

Diode Dynamics

Diode Dynamics 28mm SMF1 LED Bulb - Red Set of 4

Name: Diode Dynamics 28mm SMF1 LED Bulb - Red Set of 4
Brand: Diode Dynamics
Price: 16.33 USD
Availability: InStock

$16.33

Direct replacement for factory 28mm festoon bulbs. Adds a modern LED appearance.

Key Features

Direct replacement — fits factory 28mm festoon bulb sockets
Modern look — adds LED appearance
Simple install — plug and play
Constant-current circuitry — lasts for years, not months, with no flickering or failure
16 lumens — similar light output to your original 28mm-sized bulb
Available in multiple colors — choose from blue, red, amber, green, cool white 6000K, and warm white 3000K

⚠️ 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