This is for 1 pair of Green bulbs part number 67!!This is a direct replacement, no modifications are necessary!These bulbs will work in any 67 Applications like: Backup bulbs (1 pair, 2 bulbs are included)Turn Signal LightsParking LightsInterior LightsAnywhere you can put any 67 bulb!!This is for the rare 67 Size, it is a metal base, similar to an 1156 but with a shorter glass lenseThese bulbs carry a full 1 year, no questions asked warranty