I thought I found a stray piece of black plastic on my H2D left print head and it turned out to be a wire after I really, really tugged on it. 
Is the part below the correct replacement part (and only part) that I need to fix my blunder???
https://us.store.bambulab.com/products/hotend-heating-assembly-h2d-and-h2c?id=627764916535484416