M-3157W Lucas Lighting 3157 High Output CANBUS White LED Bulbs – Pair
Lucas Lighting 3157 High Output CANBUS White LED Bulbs – Pair
Upgrade your vehicle's factory 3157 lighting with the Lucas Lighting M-3157W High Output CANBUS White LED Bulbs. Designed as a direct replacement for compatible 3157-style halogen bulbs, the M-3157W delivers brighter, instant-on LED performance while maintaining the dual-output operation of the original bulb.
The M-3157W uses a white LED output and is designed for applications including reverse lights, brake lights, and marker lights. Its dual-output design provides a lower-output running mode and a higher-output safety mode for functions such as braking.
Lucas Lighting's M-Series uses fewer but higher-power LED chipsets positioned as closely as possible to the original halogen bulb filaments. This approach is designed to optimize the LED light-source position within the factory housing for a more appropriate lighting pattern.
The M-Series also incorporates Lucas Lighting's newest CANBUS technology, which Lucas states provides compatibility with greater than 90% of vehicles without bulb-out errors or fast-blinking issues. The M-3157W is sold as a pair of two bulbs.
Key Features
- 3157 High-Output LED Bulbs – Direct replacement design for compatible 3157 applications
- White LED Output – Designed for reverse, brake, and marker applications
- Dual-Output Design – Lower output in running mode and higher output in safety-function mode
- High-Power LED Chipsets – Uses fewer, higher-power LED chipsets
- Optimized LED Positioning – Chipsets are positioned close to the original bulb filament location
- Advanced CANBUS Technology – Lucas states greater than 90% vehicle compatibility without bulb-out errors or fast blinking issues
- Instant-On LED Response – Provides immediate illumination compared with traditional halogen bulbs
- Direct Replacement – Designed for compatible 3157-style sockets
- M-Series Construction – Lucas Lighting's high-output automotive LED bulb platform
- Sold as a Pair – Includes two bulbs
White 3157 LED Bulb for Reverse, Brake & Marker Lights
The M-3157W is the white version of Lucas Lighting's M-Series 3157 bulb.
Lucas specifically lists the white version for:
- Reverse lights
- Brake lights
- Marker lights
This makes the M-3157W a versatile option when a vehicle uses a 3157-style dual-output bulb in one of these applications.
For front turn-signal applications requiring a white running light that changes to amber when signaling, the M-3157SB Switchback is the appropriate M-Series version rather than the M-3157W.
High-Output M-Series LED Technology
The M-Series is designed around more than simply adding additional LED chips.
Lucas Lighting uses fewer, higher-power LED chipsets and positions them as closely as possible to the original halogen bulb filaments. This is intended to optimize the location of the LED light source within the factory housing and help maintain an effective lighting pattern.
The result is an LED replacement designed to provide the immediate response and high-output performance of an LED while working within the original bulb housing.
Dual-Output Performance
The M-3157W retains the dual-output characteristics associated with the 3157 bulb style.
The bulb provides:
- Lower-output running mode
- Higher-output safety-function mode
Depending on the vehicle's factory application, the higher-output mode can be used for functions such as the brake light, while the lower-output mode operates as the running or marker light.
This makes the M-3157W particularly useful for vehicles that use a single 3157 bulb for both running/marker and brake functions.
Advanced CANBUS Compatibility
The M-3157W incorporates Lucas Lighting's latest CANBUS technology.
Lucas states that its M-Series 3157 bulbs achieve compatibility with greater than 90% of vehicles without causing bulb-out errors or fast-blinking issues.
While the CANBUS system is designed to provide broad compatibility, vehicle electrical systems can vary. Some vehicles may still require additional components or troubleshooting depending on how the factory lighting circuit monitors bulb resistance and current draw.
3157 Replacement & Cross-Reference Compatibility
The M-3157W is designed around the 3157 bulb style and can replace a broad range of related bulb numbers listed by Lucas Lighting.
Lucas lists compatibility with:
3047, 3047K, 3047LL, 3057, 3057A, 3057ALL, 3057K, 3057KLCP, 3057KX, 3057LL, 3057ST, 3057X, 3155, 3155LL, 3157, 3157A, 3157AK, 3157K, 3157KX, 3157LL, 3157NA, 3157NAK, 3157NALL, 3157ST, 3157X, 3357, 3357A, 3357ALL, 3357K, 3357LL, 3454NA, 3457, 3457A, 3457AK, 3457ALL, 3457K, 3457NA, 3457NAK, 3757A, 3757AK, 3757ALL, 4057, 4057K, 4057LL, 4114, 4114LL, 4114K, 4157, 4157K, 4157LL, 4157NA, 4157NAK, 5702A, 5702AK
Always verify the original bulb and application before ordering, as bulb numbers and lighting functions can vary by vehicle.
3157 vs. 3156
Lucas Lighting notes that a 3157 bulb can replace a 3156-style bulb, but a 3156 bulb cannot functionally replace a 3157 except when used for a reverse-light application.
This distinction is important because 3156 and 3157 bulbs can appear very similar while serving different electrical functions.
Direct Replacement Design
The M-3157W is designed to install in compatible factory 3157-style bulb sockets.
It is a practical upgrade for customers who want to replace their factory halogen bulbs with LED technology without changing the vehicle's original socket or lighting housing.
Before installation, verify that the original bulb is a compatible 3157-style dual-output bulb and that white illumination is appropriate for the intended lighting position.
Typical Applications
The M-3157W can be used in compatible applications such as:
- Reverse lights
- Backup lights
- Brake lights
- Rear marker lights
- Running lights
- Other compatible 3157 dual-output applications requiring white illumination
For front turn signals requiring a white running light and amber turn-signal function, use the M-3157SB switchbackinstead.
Quick Specifications
| Specification | Details |
|---|---|
| Brand | Lucas Lighting |
| Series | M-Series |
| SKU | M-3157W |
| Bulb Type | 3157 LED |
| Color | White |
| Output | Dual Output |
| Technology | LED |
| CANBUS | Yes |
| Applications | Reverse / Brake / Marker |
| Installation | Direct Replacement |
| Quantity | 2 Bulbs |
| Bulb Style | 3157 |
| Cross-Reference | 3157 and compatible bulb styles |
What's Included
- 2 × Lucas Lighting M-3157W White LED Bulbs
Important Fitment Information
Before ordering the M-3157W, verify that your vehicle uses a compatible 3157-style dual-output bulb in the intended lighting position.
The M-3157W is the white version of the M-Series 3157 and is intended for reverse, brake, and marker applications.
The M-3157 family also includes other color/function options:
- M-3157W – White for reverse, brake and marker applications
- M-3157SB – Switchback for front marker/turn-signal applications
- M-3157R – Red for brake, marker and turn-signal applications
Vehicle fitment can vary by year, trim and lighting configuration. Always confirm the original bulb number and application before ordering.
Installation
- Turn off the vehicle and lighting system.
- Remove the factory 3157 bulb.
- Install the Lucas M-3157W into the factory socket.
- Make sure the bulb is fully seated.
- Test the lower-output running/marker function.
- Test the higher-output brake or safety function where applicable.
- Check the vehicle for any bulb warnings or abnormal flashing.
- Reinstall any removed components after confirming proper operation.
If the bulb does not illuminate after installation, check the bulb orientation and socket connection before further troubleshooting.
FAQ
What is the Lucas M-3157W?
The Lucas Lighting M-3157W is a white high-output 3157 LED bulb with dual-output operation and CANBUS technology. It is sold as a pair.
What color is the M-3157W?
The M-3157W produces white LED light.
What is the M-3157W used for?
Lucas Lighting lists the white M-3157 for reverse, brake and marker applications.
Is the M-3157W a dual-output bulb?
Yes. The 3157 M-Series uses a lower-output running mode and a higher-output safety-function mode, such as braking.
Is the M-3157W CANBUS compatible?
Yes. Lucas Lighting states that its M-Series 3157 bulbs use CANBUS technology and achieve compatibility with greater than 90% of vehicles without bulb-out errors or fast blinking issues.
Will the M-3157W work as a reverse light?
Yes, provided the vehicle uses a compatible 3157-style bulb in the reverse-light position. Lucas specifically lists the white M-3157 for reverse applications.
Can I use the M-3157W as a brake light?
Yes, when the vehicle uses a compatible 3157 dual-output bulb for its brake-light application. Lucas lists the white M-3157 for brake applications.
Is the M-3157W a switchback bulb?
No. The M-3157W is the white version. The M-3157SB is the switchback version designed for front marker/turn-signal applications.
What is the difference between M-3157W and M-3157SB?
The M-3157W provides white illumination for reverse, brake and marker applications. The M-3157SB is designed for front marker/turn-signal applications and switches between white and amber.
Can a 3157 replace a 3156?
Lucas states that a 3157 can replace a 3156, but a 3156 cannot functionally replace a 3157 except in a reverse-light application.
How many bulbs are included?
The M-3157W is sold as a pair of two bulbs.