What size battery do I need for a replacement on 2003 dodge caravan sport?

The 2003 Dodge Caravan Sport requires a Group 35 battery. However, it's always best to verify this with your owner's manual or check the battery itself for the group size printed on the top or side. Different options within the Group 35 category (different cold cranking amps, reserve capacity, etc.) may be available depending on your needs and climate. An auto parts store can help you choose the right one for your vehicle.