L-39MMW Lucas Lighting 39mm Festoon LED Interior Bulbs White – CANBUS (Pair)

Lucas Lighting L-39MMW 39mm Festoon LED Interior Bulbs White – CANBUS Pair

Upgrade your vehicle's factory interior lighting with the Lucas Lighting L-39MMW 39mm Festoon LED Bulb Pair. Designed to directly replace compatible 39 mm festoon-style halogen bulbs, these LEDs provide brighter white illumination, instant-on operation, and longer-lasting LED performance for interior and other compatible festoon applications.

The Lucas Lighting L-39MMW is designed for CANBUS vehicle systems to help avoid bulb-out errors and is sold as a pair of two bulbs.

The 39 mm size is compatible with several common factory bulb numbers, including 6411, 6413, 6423, and 39MMW. Always verify your original bulb size and part number before ordering.

Key Features

• Lucas Lighting L-39MMW
• 39 mm festoon-style LED bulb
• Sold as a pair – 2 bulbs
• Direct replacement for compatible 39 mm festoon bulbs
• Brighter output than conventional halogen festoon bulbs
• Bright white LED illumination
• Instant-on operation
• Designed for CANBUS systems
• Helps avoid common bulb-out errors
• Ideal for interior and other compatible festoon applications
• Commonly used for dome, under-dash, and license-plate lighting
• Longer-lasting LED technology compared with traditional halogen bulbs
• Compact festoon-style replacement design

39mm Festoon LED Bulb Replacement

The L-39MMW is designed specifically for 39 mm festoon applications.

Lucas Lighting lists the following bulb styles as compatible with its 39 mm Festoon size:

• 6411
• 6413
• 6423
• 39MMW

If your original bulb matches one of these numbers or measures approximately 39 mm, the L-39MMW may be the appropriate replacement. Always confirm the original bulb and physical dimensions before ordering.

Upgrade Your Interior Lighting

Factory halogen festoon bulbs can produce a dimmer, warmer-colored light. The Lucas Lighting L-39MMW replaces the original bulb with LED technology for a brighter white appearance that can provide more useful illumination inside the vehicle.

Lucas specifically identifies its Festoon LED bulbs as commonly used for:

• Dome lights
• Interior courtesy lights
• Under-dash lights
• License-plate lights
• Other compatible festoon applications

The brighter white output can make it easier to illuminate the vehicle's cabin and see items inside the vehicle.

CANBUS Compatible

Modern vehicles may monitor the electrical load of their factory bulbs and display a bulb-out warning when a lower-draw LED replacement is installed.

Lucas Lighting's Festoon LED series is designed for CANBUS systems to help avoid bulb-out errors, making the L-39MMW a convenient upgrade for many modern vehicles.

CANBUS compatibility does not guarantee compatibility with every vehicle, since electrical systems vary between applications.

Bright White LED Output

The L-39MMW replaces a traditional halogen festoon bulb with LED technology for a brighter, cleaner white appearance.

LED technology also provides instant-on illumination, giving you immediate light whenever the interior or other connected lighting circuit is activated.

Direct Replacement Design

The L-39MMW maintains the familiar festoon-style design used by many factory vehicle lighting systems.

Installation

1. Turn off the vehicle's interior lights.
2. Allow the original bulb to cool completely.
3. Remove the factory festoon bulb.
4. Verify the original bulb length and contact configuration.
5. Install the Lucas L-39MMW.
6. Test the bulb before reinstalling the light housing.

If the LED does not illuminate, remove it and rotate/reinstall it to reverse polarity before testing again.

Always verify the original bulb size before installation.

39mm vs. Other Festoon Sizes

Lucas Lighting offers its Festoon LED bulbs in four sizes:

• 31 mm – L-31MMW
• 36 mm – L-36MMW
• 39 mm – L-39MMW
• 42 mm – L-42MMW

The L-39MMW is specifically the 39 mm version. Festoon bulbs that look similar can have different lengths, so measuring the original bulb or checking its part number is recommended before ordering.

Quick Specifications

What's Included

• 2 × Lucas Lighting L-39MMW 39 mm Festoon LED Bulbs

Important Fitment Information

Please verify your original bulb size before ordering.

Festoon bulbs are available in several lengths, and bulbs that appear similar may not be interchangeable.

The L-39MMW is specifically designed for 39 mm applications. Lucas also offers 31 mm, 36 mm, and 42 mm versions for other applications.

If your original bulb is a different length, select the corresponding Lucas Festoon size instead.

FAQ

What size is the Lucas L-39MMW?

The L-39MMW is a 39 mm festoon LED bulb.

Is the L-39MMW sold individually?

No. Lucas Lighting's Festoon LED bulbs are sold as a pair of two bulbs.

Is the L-39MMW CANBUS compatible?

Yes. Lucas Lighting designed its Festoon LED bulbs for CANBUS systems to help avoid bulb-out errors.

What bulbs does the L-39MMW replace?

Lucas lists compatibility with 6411, 6413, 6423, and 39MMW bulb styles.

Where can I use a 39 mm festoon LED bulb?

Common applications include dome lights, interior courtesy lights, under-dash lights, license-plate lights, and other compatible festoon locations.

Will the L-39MMW fit every 39 mm festoon application?

Not necessarily. The original bulb's length, contact configuration, available space, and vehicle's electrical system should all be considered before ordering.

Are these brighter than factory halogen festoon bulbs?

Yes. Lucas Lighting describes its Festoon LEDs as brighter than the halogen bulbs they replace, with white LED output and instant-on operation.

Do LED festoon bulbs turn on instantly?

Yes. LED technology provides instant-on illumination.

What if my vehicle shows a bulb-out warning?

The L-39MMW is designed for CANBUS systems to help avoid bulb-out errors. However, individual vehicle electrical systems can vary, so additional compatibility equipment may be required in some applications.