A fluid injection device can include a plurality of needles, a hub from which the needles project, and a base component. The hub can have a directing portion extending therefrom. The plurality of needles can each be in fluid communication with a respective needle base, and the needle bases can at least partially surround the directing portion. The directing portion can extend in a direction away from the hub for diverting flow toward the plurality of needle bases. The base component can be separate from and couplable to the hub such that when coupled thereto, the hub directing portion extends into a cavity of the base component upstream of the plurality of needle bases.
