read all carefully
You are buying one bulb
OEM is 21/3cp 21cp 3cp CP= candlepower not the same as watts
I am selling 1154 HP 6v 50 cp 14 cp these are brighter bulbs
If you feel your rear tail light is to dim this will help
These are a premium nickel base bulb
CAN'T be used on 12 volt models!