This Article Contains information directly from the Pikmin Games. This article is based off of an Enemy/Treasure/Area/Cave/Pikmin/Character from the Pikmin series of Games.
The #2 Ionium Jet is a ship part in Pikmin 1. It is probably a slight boost, as Olimar says, but it could easily be used for smoother flying and quicker turns. Like the #1 Ionium Jet, this is obviously needed for the Dolphin needs to propel itself through deep space.
Collecting the PartEdit
It is on a stone platform in the far north of the area. To retrieve it, first throw at least 15 Blue Pikmin on the platform to the west of it, and use the nearby geyser to reunite with them. Then simply throw them across the gap to the Jet. The path to the ship from there is full of Water Dumples, Dwarf Bulbears and Spotty Bulbears, so be sure to clear the path before taking this piece.