In this guide, you will come to know where to farm for Spare Parts in Warframe.
Spare parts can drop from two main places, one being from corrupted enemies that can mainly spawn in the void, and the other being from completely killing the lephantis boss found on Deimos.
There aren’t many mods that can drop from lephantis, but the mod you are looking for doesn’t have the lowest drop rate out of the possible mods you can get. So it shouldn’t take you a large number of runs before you get the mod.