Although Scion has lots of auto parts with impressive performance, the fuel tank parts still need repair and upgrades after a long time of usage. The steps to remove the Scion fuel tank parts are as follows: Drain all fuel in the tank to make it lighter at the time of removal, next relieve the fuel system by taking off the gas cap, then remove the fuel tank rock guard (if equipped), fuel lines, EVAP lines off the canister, and the fuel filler neck hoses, and finally remove the mounting screws and drop the fuel tank while supporting the bottom of it with a jack carefully. The amount of fluid the gas tank can hold depends on the size of the tank that was put in the Scion from the factory. We have nearly all types of auto parts in our catalog to give you a better vehicle both inside and out. We put much emphasis on the quality of different Scion parts and accessories online.