Serratifusus excelens is a species of sea snail, a marine gastropod mollusc in the family Austrosiphonidae.
Named after the Latin expression excelens (sic - should be excellens) (adjective), meaning "high, exalted, lofty".
The length of the shell attains 36.4 mm.
This marine species occurs off New Caledonia (depth range: 370 –405 m).