Alpha Series 3157 LED signal and marker bulbs
This package contains a pair of Alpha Series 3157 LED bulbs in amber. The listed specification uses 3020 LED chips, a 9–18V input range and a 26W power rating with ±10% tolerance.
Compare the original bulb number, socket contacts, required lamp function and output color. A connector or cross-reference number alone does not establish compatibility with every vehicle. Some lighting circuits need an additional compatible flasher or decoder to prevent rapid flashing or bulb warnings.
- LED BULBS: 2x (One Pair) Alpha Series 3157 LED Bulbs
- WARRANTY: Lifetime
- CROSS COMPATIBILITY: 3157, 3057, 3155, 3156, 3357, 3457, 4057, 4157
- FITMENT: Match the original socket, required lamp function and selected LED color; not every color is suitable for every listed lamp position.
- INPUT: 9v – 18v
- POWER: 26w (+- 10%)
- LED CHIPS: 3020
Frequently Asked Questions
Are these 3157 bulbs sold individually or as a pair?
The listed package contains two Alpha Series 3157 LED bulbs.
Which output colors does this 3157 product offer?
This exact SKU, ALPHA-3157-A, supplies amber LED output.
Can these 3157 LEDs operate on a 24V circuit?
The exact product specification lists 9–18V input. Do not treat it as a 24V bulb based on the truck brand or a similar socket.
Will CANBUS wording guarantee no hyperflash?
No. Some vehicles still need a compatible flasher or decoder. Check the original bulb, connector and lighting circuit before selecting additional electrical parts.
Do the cross-reference numbers confirm year/make/model fitment?
No. Compare the actual socket contact arrangement, available clearance, circuit function and required output color. A bulb family is a starting point for that check, not a verified vehicle application.
What warranty is listed for this bulb?
The current product lists a lifetime warranty.
