Enables ferrochelatase activity. Predicted to be involved in heme biosynthetic process. Predicted to be located in mitochondrial inner membrane. Predicted to be active in mitochondrion. Is expressed in several structures, including adult head; adult heart; dorsal pharyngeal muscle cell; embryonic/larval midgut primordium; and gut section. Human ortholog(s) of this gene implicated in cutaneous porphyria and erythropoietic protoporphyria. Orthologous to human FECH (ferrochelatase).