In this letter, I would like to show you what is the difference between 1157 and 3157 bulbs.

1157 and 3157 bulbs are all brake lamps.

Although 1157 is the similar size as 3157 bulbs, they are very difference between each other.

1157 is 12v 21/5w with bay15d, but 3157 is 12v 27/7w with W2,5*16q.

We always call 3157 bulbs as “wedge bulb” and 1157 is “globel bulb”.

3157 bulbs are always using in United States car brands such as ford, ram, chevy, dodge and so on.

But 1157 bulbs are using in European brands such as Renault, FIAT, BENZ, BMW, VOLVO and so on.

Please come to get more information about what is the difference between 1157 and 3157 bulbs at any time.