Memory Alpha
Memory Alpha
Multiple realities
(covers information from several alternate timelines)

Microfusion thrusters were a type of thruster that were incorporated into the propulsion system aboard various Federation shuttlecraft types.

Both the Type 6 shuttlecraft and Type 15 shuttlepod employed microfusion thrusters. (TNG: "The Outcast", "In Theory")

The Yellowstone-class runabout had twelve microfusion thrusters. (VOY: "Non Sequitur")