3156, 3157 & 4257 Turn Signal LED Bulbs
Upgrading your vehicle with 3156 LED bulbs, 3157 LED bulbs, and 4257 LED Bulbs provides greater light output and better visibility than halogen factory bulbs. The 3156, 3157, and 4257-size bulb is used in both the front and rear turn signals of many modern vehicles, including Fords, Chevrolets, VWs, Acuras, Toyotas, and many more.
Diode Dynamics is proud to offer plug-and-play LED turn signal bulbs for vehicles using 3156, 3157, and 4257-size bulbs, including our 510-lumen XP80!
The 4257 bulb differs from the 3156/3157 bulb slightly. The 3156/3157 bulb includes tabs on either side of the bulb, while the 4257 bulb does not. This allows the 4257 bulb to fit where the 3156/3157 bulb will not.
Not sure which bulbs you need? Click here for our Vehicle Finder tool!
3156 LED Bulb cross reference: 3456, 3156A, 3156, 3156AK, 3156ST, 3156K, 3156LL, 3456LL
3157 LED Bulb cross reference: 3155, 3457A, 3457NA, 4057, 3157A, 3057A, 3157, 3157NA, 5702A, 4157NA, 3057, 3454NA, 4157, 3047, 3357A, 3757A, 3457, 4114, 3357, 4114LL, 3457K, 3157LL, 4157K, 3057LL, 4157NAK, 3357LL, 4057LL, 3157K, 3357K, 3057K, 3057ALL, 3457AK, 3357ALL, 4114K, 3157X, 3057KLCP, 3757AK, 3047LL, 3057KX, 3157ST, 3057X, 4057K, 3457NAK, 3155LL, 3457ALL, 4157LL, 3157NAK, 3157AK, 3157NALL, 3047K, 3757ALL, 3157KX, 3057ST, 5702AK
4257 LED Bulb: Fitment for Ford vehicles
Compatible replacements for 3156, 3157, and 4257-size incandescent bulbs.
