How much brighter will this bulb be compared to my factory bulb?

The SMF2 LED puts out 24 lumens, about double the total light compared to your original 28mm-sized bulb. Diode Dynamics tests the true output in-house and provides real numbers to compare.

What size is this bulb?

This is a 28mm festoon bulb, a direct replacement for any 28mm-size bulb location. These are commonly found in vanity mirror lights in many vehicles.

What if the bulb fails?

This bulb is built with constant-current circuitry and transient suppression, so it should last for years. But like every Diode Dynamics product, it's backed by a three-year replacement warranty.

Diode Dynamics

Diode Dynamics 28mm SMF2 LED Bulb - Red (Single)

Name: Diode Dynamics 28mm SMF2 LED Bulb - Red (Single)
Brand: Diode Dynamics
Price: 6.09 USD
Availability: InStock

$6.09

Direct replacement for factory 28mm festoon bulbs. Adds a modern LED look with simple plug-and-play installation.

Key Features

Direct replacement — fits factory 28mm festoon bulb sockets
Modern look — adds updated LED appearance
Simple install — plug-and-play
Embedded load resistor — reliable operation
Durable metal terminals — snug fit in the socket
Lightweight design — won't vibrate loose

⚠️ 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