We identified SFXN-1.2 to regulate both morphologies as well as dynamics of mitochondria. SFXN-1.2 is an ortholog of human Sideroflexin 1/3 associated with Alzheimer's and Parkinson's disease. We show that SFXN-1.2 binds to kinesin-3 KIF1A(UNC-104) via CX32 (Connexin 32), a protein known to be linked to Charcot-Marie-Tooth diseases. While SFXN-1.2 and CX32 affect the dynamics of mitochondria, they also affect the motility of the molecular motor UNC-104 alone. We found no role of the motor's PH domain in linking the motor to mitochondria. SFXN-1.2 has no effect on synaptic vesicle trafficking underlining the specificity of its role on mitochondria transport. We narrowed down critical interaction schemes of the UNC-104/CX32/SFXN-1.2 complex. Strikingly, mutations in SFXN-1.2 lead to motor- and sensory neuron defects in C. elegans affecting the animal's touch responses as well as restricting body movements. Lastly, we revealed that neither mitochondrial bioenergetics nor mitophagy are affected by the sfxn-1.2 mutation.